Page 1 Preface Contents Introduction SIPROTEC Functions Line Differential Protection Mounting and Commissioning with Distance Protection 7SD5 Technical Data Appendix V 4.70 Literature Manual Glossary Index C53000-G1176-C169-5...
Page 2 SIPROTEC, SINAUT, SICAM and DIGSI are registered trademarks Document Version V04.70.01 of Siemens AG. Other designations in this manual might be trade- marks whose use by third parties for their own purposes would in- Release date 02.2011 fringe the rights of the owner.
Page 3: Functions 3
• As well as a compilation of the most significant data for advanced users → Appendix A. General information with regard to design, configuration, and operation of SIPROTEC 4 devices are set out in the SIPROTEC 4 System Description /1/.
Page 4: Technical Data
Additional Support Should further information on the System SIPROTEC 4 be desired or should particular problems arise which are not covered sufficiently for the purchaser's purpose, the matter should be referred to the local Siemens rep- resentative. Our Customer Support Center provides a 24-hour service.
Page 5: C53000-G1176-C169
Note indicates information on the device, handling of the device, or the respective part of the instruction manual which is important to be noted. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 6 Operational equipment with open circuited current transformer circuits may not be operated. The limit values as specified in this manual or in the operating instructions may not be exceeded. This aspect must also be observed during testing and commissioning. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 7 (example of a value indication) External binary output signal with number (device indication) used as input signal Example of a parameter switch designated FUNCTION with address 1234 and the possible settings ON and OFF SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 8 Timer (pickup delay T, example adjustable) with setting address and parameter designator (name) Timer (dropout delay T, example non-adjustable) Dynamic triggered pulse timer T (monoflop) Static memory (RS-flipflop) with setting input (S), resetting input (R), output (Q) and inverted output (Q) ■ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 9: Table Of Contents
Information List ............. .92 SIPROTEC, 7SD5, Manual...
Page 10 Information List ............. . . 186 SIPROTEC, 7SD5, Manual...
Page 11 Information List..............272 SIPROTEC, 7SD5, Manual...
Page 12 Information List ............. . . 360 SIPROTEC, 7SD5, Manual...
Page 13 Information List .............442 SIPROTEC, 7SD5, Manual...
Page 14 Information List ............463 SIPROTEC, 7SD5, Manual...
Page 15 Information List .............485 SIPROTEC, 7SD5, Manual...
Page 16 Checking the System Connections ..........529 SIPROTEC, 7SD5, Manual...
Page 17 Weak Infeed Tripping (French Specification/optional) ........610 SIPROTEC, 7SD5, Manual...
Page 18 Measured Values ..............747 SIPROTEC, 7SD5, Manual...
Page 19: Siprotec, 7Sd5, Manual
Index ................. .769 SIPROTEC, 7SD5, Manual...
Page 20 Contents SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 21: Introduction
Introduction The Line Differential Protection with Distance Protection SIPROTEC 4 7SD5 is introduced in this chapter. You are provided with an overview of the field of application, characteristics, and functional scope of the device 7SD5. Overall Operation Application Scope Characteristics SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 22: Overall Operation
1.1 Overall Operation Overall Operation The SIPROTEC 4 7SD5 line protection is equipped with a powerful microprocessor system. This provides fully digital processing of all functions in the device, from the acquisition of the measured values to the output of commands to the circuit breakers, as well as the exchange of measured data with the other ends of the pro- tected area.
Page 23 Thus, all information of the device, e.g. configuration and setting parameters, operating and fault messages, and measured values can be retrieved or changed (see also chapter 2 and SIPROTEC 4 System Description). Devices with control functions also allow control of switchgear from the front panel.
Page 24 These described functional units are supplied by a current supply PS with the necessary power in the different voltage levels. Brief supply voltage dips which may occur on short circuits in the auxiliary voltage supply of the devices are usually bridged by a capacitor (see also Technical Data, Chapter 4.1). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 25: Application Scope
1.2 Application Scope Application Scope The SIPROTEC 4 7SD5 line protection is a protection relay that combines differential and distance protection. A multi-end fault locator allows to precisely locate faults in two-end lines, even in case of unfavourable operat- ing or fault conditions.
Page 26 (single point indication) or two binary inputs (double point indication) can be used. The capability of switching primary equipment can be restricted by appropriate settings for the switching authority (remote or local), and by the operating mode (interlocked/non-interlocked, with or without password validation). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 27 A 9-pin DSUB socket on the front panel is used for local communication with a personal computer. By means of the SIPROTEC 4 operating software DIGSI, all operational and evaluation tasks can be executed via this operator interface, such as specifying and modifying configuration parameters and settings, configuring user- specific logic functions, retrieving operational and fault messages and measured values, reading out and dis- playing fault recordings, inquiring device conditions and measured values, issuing control commands.
Page 28: Characteristics
• Permanent monitoring of the protection data transmission concerning disturbance, failure or transfer time deviations in the transmission network with automatic transfer time correction • Automatic changeover of the communication paths possible in case of transmission failure or transmission disturbance SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 29 • Remains in service also during single-pole dead times • settable power swing programs • prevention of undesired tripping by the distance protection during power swings • Tripping for out-of-step conditions can be configured SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 30 Sensitive Earth Fault Detection (optional) • for compensated or isolated networks • Detection of the displacement voltage • Determination of grounded phase • Sensitive earth fault directional determination • Angle error correction for current transformers SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 31 High Current Switch-onto-Fault Protection • Fast tripping for all faults on 100 % line length • Selectable for manual closure or following each closure of the circuit breaker • With integrated line energization detection. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 32 • Monitoring for underfrequency (f<) and/or overfrequency (f>) with 4 frequency limits and delay times that are independently adjustable • Particularly insensitive to harmonics and abrupt phase angle changes • Large frequency range (approx. 25 Hz to 70 Hz) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 33 • Display of the measured values of the communication link, such as transmission delay and availability • Function logout of a device from the line protection system possible during maintenance work at an end of a power line, test mode and commissioning mode SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 34 The communication topology of the line protection and communication system, phasor diagrams of all cur- rents and (if applicable) voltages at all ends of the line protection system, as well as the differential protection and distance protection characteristics, are graphically displayed on the screen ■ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 35: Functions
Functions This chapter describes the individual functions of the SIPROTEC 4 device 7SD5. It shows the setting possibil- ities for each function in maximum configuration. Guidelines for establishing setting values and, where required, formulae are given. Based on the following information, it can also be determined which of the provided functions should be used.
Page 36 Functions 2.26 Additional Functions 2.27 Command Processing SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 37: General
The procedure is described in detail in the SIPROTEC 4 System Description. Entry of password no. 7 (parameter set) is required to modify configuration settings. Without the password, the settings may be read, but may not be modified and transmit- ted to the device.
Page 38: Control Of The Main Protection Functions
Furthermore, the circuit breaker must be capable of single-pole tripping. Note If you have changed address 110, save your changes first via OK and reopen the dialog box since the other setting options depend on the selection in address 110. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 39 The actual transformer data will be requested when the general protection data are set (see Section 2.1.4.1 under margin heading „Topological Data for Transformers“ (optional)). If you want to configure differential protection with charging current compensation, set this condition in address 149 charge I comp.. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 40 IEC characteristic (TOC IEC) or according to an ANSI characteristic (TOC ANSI). The different characteristics are depicted in the Tech- nical Data. You can also disable the time overcurrent protection (Disabled). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 41 This setting is recommended for time-graded protection. If the protec- tion function which is to operate with automatic reclosure, does not have a general pickup signal for starting the action times, select Trip without T-action... (without action time). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 42: Settings
Power Swing detection Enabled Teleprot. Dist. PUTT (Z1B) Disabled Teleprotection for Distance prot. PUTT (Pickup) POTT Dir.Comp.Pickup UNBLOCKING BLOCKING Rev. Interlock Pilot wire comp Disabled DTT Direct Trip Disabled Disabled DTT Direct Transfer Trip Enabled SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 43 Breaker Failure Protection Enabled enabled w/ 3I0> Trip Cir. Sup. Disabled Disabled Trip Circuit Supervision 1 trip circuit 2 trip circuits 3 trip circuits REF PROT. Disabled Disabled Restricted earth fault protection Enabled SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 44: General Power System Data (Power System Data 1)
The setting determines the measuring direction of the device (forward = line direction). A change in this setting also results in a polarity reversal of the earth current inputs I or I SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 45 During configuration of the device functions (Section 2.1.1), it has been determined whether the device is to work with or without measured voltages. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 46 The busbar transformers supply 110 V secondary for primary operation at nominal value while the feeder transformers supply 100 V secondary. Therefore, this difference must be balanced: Address 215: Usy1/Usy2 ratio = 100 V / 110 V = 0.91. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 47 This is independent of whether the device has a normal measuring current input for I or a sensitive mea- suring current input (if necessary with I transformer for earth fault protection). All current transformers in the device must be set to the same secondary current (Jumpers). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 48 Accordingly, set for address 207 SystemStarpoint = Solid Earthed, Peterson-Coil or Isolated. For „low-resistant“ earthed systems set Solid Earthed. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 49 For this, the characteristic data of the current transformers and of their secondary circuits are set (see also Figure 2-27 in Section 2.3). The default setting is adequate in most cases; it considers the data of the worst- case protective current transformers. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 50 The CT error at rated accuracy limit factor, plus a safety margin, is set at address 254 E% K_ALF_N. It is derived from the number preceding the P of the transformer data. Table 2-1 illustrates some usual protective current transformer types with their characteristic data and the rec- ommended settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 51 The entire connected burden consists of the burden of the incoming lines and the burden of the device: P' = 4.375 VA + 0.3 VA = 4.675 VA Thus the ratio of the accuracy limit factors is as follows SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 52 Please consider that this deviation through voltage control is referred to the mean current at rated apparent power and not to the rated current at rated voltage. This requires an adequate correction of the setting values as discussed in Section 2.1.4 under „Topological Data for Transformers (optional)“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 53: Settings
Earth Fault O/C: setting for 1pole stages separat. T-CB close 0.01 .. 0.60 sec 0.06 sec Closing (operating) time of CB 240A TMin TRIP CMD 0.02 .. 30.00 sec 0.10 sec Minimum TRIP Command Dura- tion SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 54: Change Group
SIPROTEC 4 System Description. Two binary inputs enable changing between the 4 setting groups from an external source.
Page 55: Settings
Here it is advisable to select the rated current of the current transformers (as in address 205 CT PRIMARY, Section 2.1.2.1). If the current transformers have different rated currents at the ends of the protected object, set the highest rated current value for all ends. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 56 The device which is used for the reference end of the transformer, normally the one at the high voltage side, must keep the numerical index 0 (default setting). The relevant vector group index must be stated for the other winding(s). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 57 The line angle is of major importance, e.g. for earth impedance matching according to amount and angle or for compounding in overvoltage protection. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 58 In such cases it is preferable to set the pa- rameters in secondary quantities. For conversion of primary values to secondary values the following applies in general: SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 59 K . Which of these two entry options applies, was determined by the setting in address 237 Format Z0/Z1 (refer to Section 2.1.2.1). Only the addresses applicable for this setting will be displayed. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 60 1116 RE/RL(Z1) and 1117 XE/XL(Z1) are determined with the data of the protected line, while the addresses 1118 RE/RL(> Z1) and 1119 XE/XL(> Z1) apply to the remaining zones Z1B and Z2 up to Z6 (as seen from the relay location). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 61 Ω/km positive sequence impedance j18.4° = 0.632 · e Ω/km zero sequence impedance (where s = line length) The calculation of the earth impedance (residual) compensation factor K results in: The magnitude of K is therefore SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 62 (residual) current of the parallel line has been connected to the measuring input I the device and that this was configured with the power system data (Section 2.1.2.1) by setting the appropriate parameters. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 63 Distance with parallel line compensation at II The current ratio may also be calculated from the desired distance of the parallel line compensation and vice versa. The following applies (refer to Figure 2-4): SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 64 This parameter can only be altered in DIGSI at Display Additional Settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 65 This setting does not apply for a close command via the integrated control func- tions. If the synchronism check is desired, the device must either feature the integrated synchronism check function or an external device for synchronism check must be connected. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 66 This parameter is valid for all protection functions of 7SD5 which are capable of single-pole tripping. The default setting is with TRIP. The difference made by this parameter becomes apparent when multiple faults are cleared, i.e. faults occurring almost simultaneously at different locations in the network. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 67 6032 S2: angle K0 and 6041 S3: Line angle to 6052 S3: angle K0 are reserved for the double- ended fault locator. They are used for parameterization of a line with different sections (overhead line - cable sections). See Section 2.21 for more details. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 68: Settings
Zero seq. comp. angle for zone Z1 1122 K0 (> Z1) 0.000 .. 4.000 1.000 Zero seq.comp.factor K0,higher zones >Z1 1123 Angle K0(> Z1) -180.00 .. 180.00 ° 0.00 ° Zero seq. comp. angle, higher zones >Z1 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 69 TRIP 3 pole coupling with TRIP 1156A Trip2phFlt 3pole 3pole Trip type with 2phase 1pole leading Ø faults 1pole lagging Ø 1161 VECTOR GROUP U 0 .. 11 Vector group numeral for voltage SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 70 0.000 .. 800.000 µF/mi 0.080 µF/mi 6024 S2: Line length 0.1 .. 1000.0 km 100.0 km S2: Line length in kilome- 6024 S2: line length 0.1 .. 650.0 Miles 62.1 Miles S2: line length in miles SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 71 RE/RL 6051 S3: K0 0.000 .. 4.000 1.000 S3: Zero seq. compensat- ing factor K0 6052 S3: angle K0 -180.00 .. 180.00 ° 0.00 ° S3: Zero seq. compensat- ing angle of K0 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 72: Information List
Relay TRIP command Phases L123 LOCKOUT IntSP LOCKOUT is active IL1 = Primary fault current IL1 IL2 = Primary fault current IL2 IL3 = Primary fault current IL3 Definitive TRIP Relay Definitive TRIP SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 73 CB alarm suppressed Line closure Line closure detected 1pole open L1 Single pole open detected in L1 1pole open L2 Single pole open detected in L2 1pole open L3 Single pole open detected in L3 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 74: Protection Data Interfaces And Protection Data Topology
Differential protection for two ends with two 7SD5 devices, each of them having one protection data interface (transmitter/receiver) Figure 2-8 Differential protection for two ends with two 7SD5 each of them having two protection data interfaces (transmitter/receiver) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 75 By the way, the two possibilities for two devices can be regarded as special cases of chains and rings. The connection as shown in Figure 2-7 forms a communication chain with only one element. Figure 2-8 shows a ring which has been compressed into one two-way connection. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 76 Networks of this type do not have deterministic channel delays as the symmetrical and asymmetrical channel delays vary too much from one telegram to the next. As a result it is not possible to obtain a definite tripping time. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 77 These are helpful features during commissioning and are described, together with further commissioning tools, in the Section „Mounting and Commissioning“. But even during operation, the proper communication of the devices can be checked. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 78 If a ring topology is configured, the system switches to chain topology. A corresponding alarm is output („PI1 unsym.“, No. 3256 for interface 1). This blocking of the link can only be reset via a binary input („>SYNC PI1 RESET“, No. 3252 for interface 1). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 79: Operating Modes Of The Differential Protection
• Via binary inputs (No. 3452 „>Logout ON“, No. 3453 „>Logout OFF“) if this was allocated In all devices of the line protection system, logging out/on of a device is signalled by the indications „Rel1Logout“ to „Rel6Logout“ (No. 3475 to No. 3480). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 80 ON/offBI“ OFF (No. 3460) is output. As soon as a requirement is not met, the device is not logged on. Note The device can deny the logout if one of the conditions mentioned before is not fulfilled. Please consider this behaviour when requesting the messages via a binary input. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 81: Differential Protection Test Mode
• Via binary inputs (No. 3197 „>Test Diff. ON“, No. 3198 „>Test Diff. OFF“) if this was allocated • In DIGSI with Control/Taggings: „Diff: Test mode“ The test mode status of another device of the line protection system is indicated on the local device with the indication „TestDiff.remote“ (No. 3192). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 82 Button „Activating differential protection test mode“ Figure 2-16 Priciple for external switch wiring for controlling the differential protection test mode Switch „Activating/deactivating differential protection test mode“ Binary input as NO contact Binary input as NC contact SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 83: Differential Protection Commissioning Mode
(Figure 2-19), it has to be considered that binary input „>Comm. Diff ON“ (No. 3260) must be parameterized as NO contact and that binary input „>Comm. Diff OFF“ (No. 3261) must be parameterized as NC contact. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 84: Protection Data Interfaces
Address 4510 T-DATAFAIL is used to set the time after which a transmission failure alarm is output. Address 4512 Td ResetRemote determines how long remote signals remain standing after a communication disturbance. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 85 RESET“. The message 3256 is pre-allocated in DIGSI in the control menu. The unblocking may only be effect- ed if the transmission times are symmetrical. The following table provides setting hints for the parameters 4506 and 4515 when using different communica- tion media or communication converters: SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 86 In PI1 SYNCMODE TEL or GPS or TEL and GPS, the transmission time can be measured separately for transmit and receive direction. If the measured transmission time difference exceeds the value parameterized at address 4506 PROT 1 UNSYM., the message 3250 „PI 1 PD unsym.“ will be output. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 87 At address 4803 TD GPS FAILD you can specify the time after which the indication „GPS loss“ (no. 3247) is output. Other parameters concerning the GPS synchronisation can be set individually for each protection data interface (see above). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 88: Settings
4611 PI2 SYNCMODE TEL and GPS TEL and GPS PI2 Synchronizationmode TEL or GPS GPS SYNC OFF 4613A PROT2 max ERROR 0.5 .. 20.0 % 1.0 % Prot 2: Maximal permissible error rate SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 89: Information List
ProtInt1:Permissible error rate exceeded 3259 PI2 Error ProtInt2:Permissible error rate exceeded 3274 PI1: C37.94 n/a PI1: IEEE C37.94 not supported by module 3275 PI2: C37.94 n/a PI2: IEEE C37.94 not supported by module SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 90: Differential Protection Topology
147 NUMBER OF RELAY. Device IDs can be entered for as many devices as configured under that address, no further IDs are offered during parameterization. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 91 • Address 1104 FullScaleCurr. • Parameter 1106 OPERATION POWER primary parameter 1106 is only displayed if parameter 143 is set to • Address 112 DIFF.PROTECTION exists • Address 149 charge I comp. exists SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 92: Settings
Relay 2 in Login state 3493 Rel3 Login Relay 3 in Login state 3494 Rel4 Login Relay 4 in Login state 3495 Rel5 Login Relay 5 in Login state 3496 Rel6 Login Relay 6 in Login state SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 93: Differential Protection
Figure 2-22 ensures a reliable tripping of the protection if the fault current flowing into the protected zone during a fault is high enough for the measuring element M to respond. Figure 2-22 Basic principle of the differential protection for a line with two ends SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 94 The sequence of the devices in the communication chain need not correspond to the indexation, as shown in Figure 2-25. The allocation is carried out during the parameterization of the topology, as explained in Section 2.2.1. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 95 With two line ends, each device takes over half of the charging current compensation, with M devices each device takes the Mth part. For more simplicity, Figure 2- 26 shows a single-phase system. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 96 Deviations in time are caused by residual errors during the synchronization of measured quantities, data trans- mission and operating time variations, and similar events. When GPS synchronization is used, these influences are eliminated and do not increase the self-restraining quantity. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 97 The blocking condition is transmitted to all devices so that it is effec- tive at all ends of the protected object. Figure 2-28 Logic diagram of the inrush restraint for one phase SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 98 = I-DIFF> + Σ (errors by CT´s and other measuring errors) rest If the calculated differential current exceeds the pickup limit and the greatest possible measurement error, the fault must be internal (shaded area in Figure 2-30). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 99 Thus possible differences resulting from the saturation are excluded. Generally it is assumed that an initial sat- uration of current transformers only takes place after the expiration of at least one integration interval ( cycle) that commenced with the occurrence of a fault. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 100 In the case of a phase-selective blocking of the differential protection, the distance protection, even if it is available and configured, does not take over the protection function for the failed phase. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 101 This signal, however, is necessary for the initiation of internal or external supplementary functions (e.g. fault recording, au- tomatic reclosure). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 102 The actual generation of the commands for the tripping (output) relay is executed within the tripping logic of the entire device (see Section 2.25.1). Figure 2-32 Tripping logic of the differential protection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 103: Setting Notes
If setting is performed from a personal computer using DIGSI, the parameters can be set either as primary or as secondary quantities. If secondary quantities are set, all currents must be converted to the secondary side of the current transformers. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 104 Please note that the parameter T3I0 1PHAS is also used by the distance protection function. The settings that you make here also affect the distance protection (see Section 2.5.1.4 under margin heading „Earth Fault De- tection“). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 105 ON or OFF. Please note that the parameter I-DIFF> in address 1210 must absolutely be increased to a value before the compensation is switched OFF, because otherwise a spurious trip might be the of 2 to 3 times I result. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 106 2310 CROSSB 2HM. With the setting ∞ the crossblock function is always active until the second harmonic content in all phases has dropped below the set value. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 107: Settings
MAX INRUSH PEAK 1.1 .. 25.0 A 15.0 A Maximum inrush-peak value 5.5 .. 125.0 A 75.0 A 2310 CROSSB 2HM 0.00 .. 60.00 sec; ∞ 0.00 sec Time for Crossblock with 2nd harmonic SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 108: Information List
>Test Diff. OFF Diff: >Reset Teststate of Diff. protec. 3199 Test Diff.ONoff IntSP Diff: Teststate of Diff. prot. ON/OFF 3200 TestDiffONoffBI IntSP Diff: Teststate ON/OFF via BI 3260 >Comm. Diff ON Diff: >Commissioning state ON SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 109 >Differential protection blocking signal 3526 Diffblk.rec PI1 Differential blocking received at PI1 3527 Diffblk.rec PI2 Differential blocking received at PI2 3528 Diffblk.sen PI1 Differential blocking sending via PI1 3529 Diffblk.sen PI2 Differential blocking sending via PI2 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 110: Breaker Intertrip And Remote Tripping
„>Intertrip L1“, „>Intertrip L2“, and „>Intertrip L3“, or for all phases together (3-pole) via the binary input function „>Intertrip 3pol“. The transmission signal can be delayed with T-ITRIP BI and prolonged with T-ITRIP PROL BI. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 111 (address 4512) for resetting the inter trip signals is started. This means that in case of communication is inter- rupted, a present receive signal maintains its last status for the time Td ResetRemote before it is reset. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 112 These alarms can in turn execute any desired actions at the receiving end. Another 24 transmission channels are available for the transmission of remote alarms and remote commands, and 4 ad- ditional fast transmission channels can be ordered optionally (see also Section 2.13). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 113: Setting Notes
Reaction if intertrip command is Trip receiv. 1303 T-ITRIP BI 0.00 .. 30.00 sec 0.02 sec Delay for intertrip via binary input 1304 T-ITRIP PROL BI 0.00 .. 30.00 sec 0.00 sec Prolongation for intertrip via bin.input SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 114: Information List
ITrp.TRIP 1p L2 I.Trip: TRIP - Only L2 3520 ITrp.TRIP 1p L3 I.Trip: TRIP - Only L3 3521 ITrp.TRIP L123 I.Trip: TRIP L123 3522 ITrp.TRIP 1pole I.Trip: TRIP 1pole 3523 ITrp.TRIP 3pole I.Trip: TRIP 3pole SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 115: Distance Protection
(Figure 2-35). The dropout threshold is approximately 95 % of the pickup threshold. Figure 2-35 Earth current stage: pickup characteristic SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 116 The earth fault detection alone does not cause a general fault detection of the distance protection, but merely controls the further fault detection modules. It is only alarmed in case of a general fault detection. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 117 If the current transformer is saturated and the parameter 1505 is not set to ∞, an earth fault detection by means of the I0 criterion alone is not possible and a verification of the pickup by means of the U0 criterion is initiated. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 118 Figure 2-39 Symmetry detection for phase-to-phase voltages Setting value for parameter 1523 Figure 2-40 Earth fault detection in isolated or resonant-earthed systems SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 119: Pickup (Optional)
1ph FAULTS Phase(s) L3-L1 L1, L3 phase-to- L1-L2 L1, L2 phase L2-L3 L2, L3 L1-E phase-to-earth L2-E L3-E L1-E L1, E L2-E L2, E L3-E L3, E only active for earthed power systems SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 120 The phases that have picked up are signalled. The picked up loops are relevant for processing the measured values. Loop pickup will drop out if the signal falls below 95 % of the respective current value or exceeds approx. 105 % of the respective voltage value. Figure 2-41 U/I characteristic SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 121 Section Earth Fault Detection are met for all earth faults or double earth faults (see Table 2-7). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 122 Iph> and that an earth fault has been detected or only phase-to-earth measurements have been stipulated by setting parameters. The angle is determined by the phase-to-earth voltage and its cor- responding phase current without considering the earth current. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 123 The adaptation to different network conditions is determined by pickup modes. As the U/I/ϕ pickup is an exten- sion of the U/I pickup, the same program options are available. Table 2-5 to Table 2-8 also apply for single– phase pickup. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 124: Calculation Of The Impedances
(during single-pole dead time) to avoid an incorrect measurement with the undefined measured values existing during this state. A state recognition (refer to Section 2.25.1) provides the corresponding block- ing signal. A logic block diagram of the phase-to-phase measuring system is shown in Figure 2-44. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 125 For the calculation of the phase-to-earth loop, for example during an L3-E short-circuit (Figure 2-45) it must be noted that the impedance of the earth return path does not correspond to the impedance of the phase. Figure 2-45 Single-phase earth fault, fault loop SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 126 (during single-pole dead time) to avoid an incorrect measurement with the now undefined measured values. A state recognition provides the corresponding blocking signal. A logic block diagram of the phase-to-earth mea- suring system is shown in Figure 2-46. Figure 2-46 Logic for a phase-to-earth measuring unit SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 127 Ø-Ø loops only) or only the phase-to-earth loops (Parameter 2Ph-E faults = Ø-E loops only). All these restrictions presuppose that the affected loops have the same direction. In Table 2-9 the measured values used for the distance measurement in earthed systems during double earth faults are shown. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 128 With 7SD5 the following double earth fault preferences (Parameter 1520 PHASE PREF.2phe) can be selected: SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 129 PHASE PREF.2phe = L1 (L3) CYCLIC L2-E, L3-E, (L2-L3) L3-E L1-E, L3-E, (L3-L1) L1-E L1-E, L2-E, (L1-L2) L1-E, L2-E PHASE PREF.2phe = All loops L2-E, L3-E, (L2-L3) L2-E, L3-E L1-E, L3-E, (L3-L1) L3-E; L1-E SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 130 There are two ways of blocking Z1. If the device is operated in differential protection mode, zone Z1 can be blocked by setting a parameter (address 1533 Z1 blkd by diff). Another way of blocking the zone is to set a binary input (No. 3610 „>BLOCK Z1-Trip“). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 131 By setting parameters it may be determined which zone(s) is/are released following a manual close (refer to Figure 2-50). The line energization information (input „SOTF“) is derived from the state recogni- tion (see Section 2.25.1, Detection of the Circuit Breaker Position). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 132: Setting Notes
When setting 3U0> Threshold (address 1504), care must be taken that operational asymmetries do not cause a pickup. 3U0 is defined as the sum of the phase-to-earth voltages |U |. If the U0 cri- L1-E L2-E L3-E terion is not required, address 1504 is set to ∞. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 133 1105 Line Angle (Section 2.1.4.1). Irrespective of the line angle it is, however, possible to select a different inclination angle of the tripping characteristic. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 134 Note When testing a single earth fault by means of a test equipment, it must be made sure that the phase-to-phase voltages fulfill the symmetry criterion. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 135 The R setting for the ground loops (or load encroachment setting) must take into account the ground current that flows when the parallel line has a single pole open condition. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 136 Maximum power flow per circuit when both lines in service: = 1200 MVA corresponds to = 1,732 A minimum operating voltage = 0,9 U Current Transformer 2000 A/5 A Voltage Transformer 400 kV/0.1 kV Setting parameter RE/RL 1.54 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 137 10% the following is set: R load (Ø-Ø) = 108 Ω primary = 10.8 Ω secondary R load (Ø-E) = 53.5 Ω primary = 5.35 Ω secondary SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 138 (over-)load current that is expected (approx. 1.2 times). In this case, it must be ensured that the minimum fault current is above this value. If this is not the case, U/I pickup is required. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 139 The meaning of the settings is illustrated in Figure 2-51. Iph> (section a, address 1911) is the minimum current as described in the previous section, Iph>> (section c) is the overcurrent pickup. Figure 2-51 Parameters of the U/I/ϕ pickup SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 140 (line direction) using address 1919 EFFECT ϕ. In this case, EFFECT ϕ is set to Forward. Otherwise EFFECT ϕ = forward&reverse is retained. This parameter can only be changed in DIGSI at Display Additional Settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 141: Settings
Block leading Ø Loop selection with 2Ph-E Block lagging Ø faults All loops Ø-Ø loops only Ø-E loops only 1523 Uph-ph unbal. 5 .. 50 % 25 % Max Uph-ph unbal. for 1ph Flt. detection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 142 1st AR -> Z1B Z1B enabled before 1st AR (int. or ext.) 1665 T6 DELAY 0.00 .. 30.00 sec; ∞ 1.50 sec T6 delay 1901 PROGAM U/I LE:Uphe/LL:Uphp LE:Uphe/LL:Uphp Pickup program U/I LE:Uphp/LL:Uphp LE:Uphe/LL:Uphe LE:Uphe/LL:I>> SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 143 50 ° PHI> pickup (lower set- ϕ> point) 1921 90 .. 120 ° 110 ° PHI< pickup (upper set- ϕ< point) 1930A 1ph FAULTS PHASE-EARTH PHASE-EARTH 1ph-pickup loop selection PHASE-PHASEONLY (PU w/o earth) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 144: Information List
Dis.Loop L2-E f Distance Loop L2E selected forward 3703 Dis.Loop L3-E f Distance Loop L3E selected forward 3704 Dis.Loop L1-2 f Distance Loop L12 selected forward 3705 Dis.Loop L2-3 f Distance Loop L23 selected forward SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 145 Distance TRIP command - Only Phase L1 3803 Dis.Trip 1pL2 Distance TRIP command - Only Phase L2 3804 Dis.Trip 1pL3 Distance TRIP command - Only Phase L3 3805 Dis.Trip 3p Distance TRIP command Phases L123 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 146: Distance Protection With Quadrilateral Characteristic (Optional)
(refer to „Direction determination“ below). The R-reach may be set separately for the phase-to-phase faults and the phase-to-earth faults to achieve a larger fault resistance coverage for earth faults if this is desired. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 147 (Figure 2-53). This is taken into account when computing the direction vector by means of a 90° rotation. Table 2-11 shows the allocation of the measured values to the six fault loops for the determination of the fault direction. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 148 Accordingly the directional characteristic includes a safety margin with respect to the borders of the first quadrant in the R–X diagram (Figure 2-54). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 149 (current transformer) which is determined by the source imped- ance Z . When load is transferred across the line, the directional characteristic may additionally be rotated by the load angle. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 150 — which is always smaller than the series reactance — does not cause the apparent direction reversal (Figure 2-57b). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 151 „pickup“ of a zone is that the direction matches the direction configured for this zone (refer also to Section 2.6). Furthermore the distance protection may not be blocked or switched off completely. Figure 2-58 shows these conditions. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 152: Setting Notes
Typical values are 0.2 s to 0.4 s. The reach is selected to cover up to approximately 80 % of the zone with the same set time delay on the short- est neighbouring feeder (see Figure 2-59). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 153 For the first zone, a setting of 85 % of the line length should be applied, which results in primary: = 0.85 · X = 0.85 · 14.70 Ω= 12.49 Ω prim or secondary: SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 154 The resistance R of the line itself can be ignored with SIPROTEC 4 devices. It is taken into account by the shape of the polygon, provided that the inclination angle of the polygon Distance Angle (address 1511) is not set greater than the line angle Line Angle (address 1105).
Page 155 Safety margin 20% The resistance R of the line itself can be ignored with SIPROTEC 4 devices. It is taken into account by the shape of the polygon, provided that the inclination angle of the polygon Distance Angle (address 1511) is not set greater than the line angle Line Angle (address 1105).
Page 156 In addition or as an alternative, it is also possible to use the setting 1607 Zone Reduction, to modify the inclination of the zone Z1 polygon and thus prevent overreach (see Figure 2-52). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 157 I do not have equal phase; the difference results mostly from the phase difference between . This angle (also called load angle) is therefore used to determine the Zone Reduction angle. and U SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 158 T2-1phase (address 1615). The zone timers for the remaining zones are set with the parameters T3 DELAY (address 1625), T4 DELAY (address 1635), T5 DELAY (address 1645), and T6 DELAY (address 1665). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 159 Section 2.17), or externally by a binary input. It is generally set to at least 120 % of the line length. On three-terminal lines („teed feeders“), it must be set to securely reach beyond the longest line section, SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 160: Settings
T1-1phase, delay for single phase faults 1606 T1-multi-phase 0.00 .. 30.00 sec; ∞ 0.00 sec T1multi-ph, delay for multi phase faults 1607 Zone Reduction 0 .. 45 ° 0 ° Zone Reduction Angle (load compensation) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 161 1634 RE(Z4) Ø-E 0.050 .. 250.000 Ω 12.000 Ω RE(Z4), Resistance for ph- e faults 0.010 .. 50.000 Ω 2.400 Ω 1635 T4 DELAY 0.00 .. 30.00 sec; ∞ 0.90 sec T4 delay SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 162 3.000 Ω 1665 T6 DELAY 0.00 .. 30.00 sec; ∞ 1.50 sec T6 delay 1666 X(Z6)- 0.050 .. 600.000 Ω 4.000 Ω X(Z6)-, Reactance for Reverse direction 0.010 .. 120.000 Ω 0.800 Ω SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 163: Distance Protection With Mho Characteristic (Optional)
R , and ϕ are common to all zones. As the char- Dist Load Load acteristic intersects the origin of the coordinate system, a separate directional characteristic is not required. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 164 This is taken into account by the calculation by means of a 90° rotation. The un- faulted loop voltage also causes a displacement of the lower zenith of the MHO characteristic. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 165 (current transformer) . The zenith Z remains unchanged; it now is the lower boundary of the circle diameter. In conjunction with load transport via the line, the zenith vector may ad- ditionally be rotated by the load angle. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 166 When switching onto a three-pole fault with the MHO characteristic, there is no memory voltage or unfaulted loop voltage available. To ensure fault clearance when switching onto three-pole close-up faults, please make sure that in conjunction with the configured MHO characteristic the instantaneous tripping function is always enabled. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 167 Therefore an additional measurement with exclusively memorized voltage is performed for applications with series compensation. This ensures a correct direction measurement at any time (see Figure 2-2-67) and the MHO distance zones are not increased more than necessary. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 168 In this case the angle between the two difference phasors is 90° (Thales-theorem). Inside the characteristic the angle is greater than 90° and outside the circle it is less than 90°. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 169 The zones and phases of such a valid pickup, e.g. „Dis. Z1 L1“ for zone Z1 and phase L1 are processed by the zone logic and the supplementary functions (e.g. teleprotection logic). Figure 2-69 Release logic of a zone (example for Z1) forward and reverse affect only the measured values, not the logic SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 170: Setting Notes
The reach is selected to cover up to approximately 80 % of the zone with the same set time delay on the short- est neighbouring feeder (Figure 2-59). Figure 2-70 Setting the reach - example for device A s1, s2 Protected line section SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 171 For the first zone, a setting of 85 % of the line length should be applied, which results in primary: = 0.85 · X = 0.85 · 14.70 Ω= 12.49 Ω prim or secondary: SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 172 „>BLOCK Z6 Ph-E“, the zones Z4, Z5, and Z6 for phase-to-earth loops may be blocked. To block these zones permanently for phase-to-earth loops, these binary input indications must be set permanently to the logic value of 1 via CFC. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 173 Z1 in address 1608 Iph>(Z1). A pickup of zone Z1 is only possible if the phase currents have exceeded this threshold value. This parameter is only avail- able if address 119 Iph>(Z1) is set to Enabled. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 174: Settings
0.010 .. 40.000 Ω 1.000 Ω 1721 Op. mode Z3 Forward Reverse Operating mode Z3 Reverse Inactive 1722 ZR(Z3) 0.050 .. 200.000 Ω 5.000 Ω ZR(Z3), Impedance Reach 0.010 .. 40.000 Ω 1.000 Ω SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 175 0.0 .. 100.0 % 15.0 % Cross polarization (phase- 1773A Mem.Polariz.P-P 0.0 .. 100.0 % 15.0 % Voltage Memory polariza- tion (ph-ph) 1774A CrossPolarizP-P 0.0 .. 100.0 % 15.0 % Cross polarization (phase- phase) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 176: Tripping Logic Of The Distance Protection
This logic may be externally initiated via the circuit breaker close signal derived from the circuit breaker control switch or from an internal line energization detection. Zones Z4, Z5 and Z6 may be blocked by external criteria (no. 3617 „>BLOCK Z4-Trip“, no. 3618 „>BLOCK Z5-Trip“, no. 3621 „>BLOCK Z6-Trip“). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 177 Functions 2.5 Distance Protection Figure 2-71 Tripping logic for the 1st zone Figure 2-72 Tripping logic for the 2nd zone SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 178 T1B) is permitted in the event of faults in the overreaching zone (i.e. up to the reach limit of zone Z1B) at both line ends. Whether the automatic reclosure device is ready for reclosure or not is irrelevant since the telepro- tection function ensures the selectivity over 100% of the line length and fast tripping. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 179 Functions 2.5 Distance Protection Figure 2-75 Tripping logic for the controlled zone Z1B SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 180: Setting Notes
The trip delay times of the distance stages and intervention options which are also processed in the tripping logic of the distance protection were already considered with the zone settings. Further setting options which affect the tripping are described as part of the tripping logic of the device. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 181: Power Swing Detection (Optional)
For each phase, there is a measuring system that ensures phase-selective power swing detection. In case of faults, the detected power swing is terminated in the corresponding phases, which enables selective tripping of the distance protection. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 182: Method Of Operation
5 Ω (at II = 1 A) or 1 Ω (at II = 5 A) from the largest zone circle. The power swing mea- suring range has no load trapezoid cutout. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 183 (PPOL). The power swing signal remains active until a fault occurs or until the power swing has de- cayed. The power swing detection can be blocked via the binary input No. 4160 „>Pow. Swing BLK“. Figure 2-79 Logic diagram of power swing detection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 184 This indication is also a pulse with a duration of approx. 50 ms, which can also be pro- cessed further via CFC logic operation. However, it does not result in power swing tripping. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 185: Setting Notes
P/S Op. mode = All zones block for the power swing blocking to avoid premature tripping by the distance protection. Note The power swing supplement works together with the impedance pickup and is only available in this combina- tion. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 186: Settings
Pow. Swing L1 Power Swing detected in L1 4168 Pow. Swing L2 Power Swing detected in L2 4169 Pow. Swing L3 Power Swing detected in L3 4177 P.Swing unst. 2 Power Swing unstable 2 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 187: Teleprotection For Distance Protection (Optional)
Since the distance zones function independently, an instantaneous trip in Z1 without a release or blocking signal is always possible. If fast tripping in Z1 is not required (e.g. on very short lines), then Z1 must be delayed with T1. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 188: Method Of Operation
To be active, it is necessary that the function is not switched off from one of the three switching sources. Figure 2-82 Activation and deactivation of teleprotection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 189: Putt (Pickup)
If at one line end there is weak or zero infeed, so that the distance protection does not pick up, the circuit breaker can still be tripped. This „weak-infeed tripping“ is described in Section 2.11.2. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 190 Functions 2.7 Teleprotection for Distance Protection (optional) Figure 2-84 Logic diagram of the permissive underreach transfer trip (PUTT) with pickup (one line end) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 191: Permissive Underreach Transfer Trip With Zone Acceleration Z1B (Putt)
In address 121 Teleprot. Dist. the PUTT (Z1B) option can be configured. Address 2101 FCT Telep. Dis. allows to set the teleprotection scheme to (ON). Figure 2-85 Operation scheme of the permissive underreach transfer trip via Z1B SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 192 The permissive transfer trip should only send for faults in the „Forward“ direction. Therefore, the first zone Z1 of the distance protection must be set to at address 1601 Op. mode Z1, see also Section 2.5.1 under side title „Independent zones Z1 up to Z6“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 193: Direct Underreach Transfer Trip
On two terminal lines, the signal transmission may be phase segregated. In this case, send and receive circuits operate separately for each phase. On three terminal lines, the transmit signals are sent to both opposite line ends. The receive signals are then combined with a logical OR function. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 194: Permissive Overreach Transfer Trip (Pott)
Z1. For all zones except Z1B, tripping results without release from the opposite line end, allowing the protection to function with the usual grading characteristic independent of the signal transmission. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 195 If the parameter Mem.rec.sig. (address 2113) is set to YES and an own distance protection pickup is avail- able in Z1B, the phase-selective release effected via the signal extension is stored. If the own distance protec- tion pickup in Z1B drops out, it will be deleted. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 196 Functions 2.7 Teleprotection for Distance Protection (optional) Figure 2-89 Logic diagram of the permissive overreach transfer trip (POTT) scheme (one line end) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 197: Directional Comparison
— without the device having detected a fault. The circuit breaker can also be tripped at the line end with no or only weak infeed. This „weak-infeed tripping“ is described in Section 2.11.2. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 198 Functions 2.7 Teleprotection for Distance Protection (optional) Figure 2-91 Logic diagram of the directional comparison scheme (one line end) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 199: Unblocking Scheme
Function diagram of the directional unblocking method For all zones except Z1B, tripping without release from remote end is initiated, allowing the protection to func- tion with the usual grading characteristic independent of the signal transmission. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 200 If the parameter Mem.rec.sig. (address 2113) is set to YES and an own distance protection pickup is avail- able in Z1B, the phase-selective release effected via the signal extension is stored. If the own distance protec- tion pickup in Z1B drops out, it will be deleted. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 201 Functions 2.7 Teleprotection for Distance Protection (optional) Figure 2-93 Send and enabling logic of the unblocking scheme SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 202 Functions 2.7 Teleprotection for Distance Protection (optional) Figure 2-94 Unblock logic SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 203: Blocking Scheme
T in this case. To avoid signal race conditions, a transmit signal can be prolonged by the settable time T once it has been initiated. Figure 2-95 Function diagram of the blocking scheme SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 204 The receive signals are then combined with a logical OR gate as no blocking signal must be received from any line end during an internal fault. With the parameter Type of Line (address 2102) the device is informed as to whether it has one or two opposite line ends. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 205 Functions 2.7 Teleprotection for Distance Protection (optional) Figure 2-96 Logic diagram of the blocking scheme (one line end) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 206: Pilot Wire Comparison
After the fault is detected within Z1B, the loop will be closed again and the trip command is executed. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 207 Therefore the loop voltage must not be too low or the pickup voltage of the binary inputs must not be too high. Operation with three terminals is also possible if the device allows it. The following figure shows the logic for two terminals. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 208 60% of the isolation voltage of the pilot wires nor 60% of the isolation of the device. The pilot wire comparison is therefore only suited for short lines. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 209: Reverse Interlocking
Figure 2-100) or the release mode (series connection of the NC contacts). To avoid transient false signals after clearance of external faults, the blocking condition of the reverse interlock- ing is extended by a transient blocking time (TB in Figure 2-100). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 210: Transient Blocking
In the case of the blocking scheme, the transient blocking also prolongs the received block signal as shown in the logic diagram Figure 2-101. After expiration of TrBlk BlockTime (address 2110) the delay time Release Delay (address 2108) is restarted. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 211: Measures For Weak Or Zero Infeed
(Figure 2-91 or Figure 2-93). When the distance protection picks up single-pole or two-pole, it is nevertheless possible to send an echo if the measurement of the phases that have not picked up has revealed weak infeed. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 212: Setting Notes
At address 2101 FCT Telep. Dis. the use of a teleprotection scheme can be turned ON or OFF. If the teleprotection has to be applied to a three terminal line the setting in address 2102 must be Type of Line = Three terminals, if not, the setting remains Two Terminals. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 213 T1B of the overreaching zone Z1B. For Pilot wire comp and Rev. Interlock T1B must be delayed so that there is enough time between the pickup of the distance protection function and the trip signal of zone Z1B. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 214 The echo function settings are common to all weak infeed measures and summarized in tabular form in Section 2.11.2.2. Note The „ECHO SIGNAL“ (No. 4246) must be allocated separately to the output relays for the transmitter actuation, as it is not contained in the transmit signals of the transmission functions. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 215: Settings
>Dis.Tele. Unblocking: BLOCK Channel 2 4040 >Dis.T.BlkEcho >Dis.Tele. BLOCK Echo Signal 4050 Dis.T.on/off BI IntSP Dis. Teleprotection ON/OFF via BI 4052 Dis.Telep. OFF Dis. Teleprotection is switched OFF 4054 Dis.T.Carr.rec. Dis. Telep. Carrier signal received SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 216 Dis.T.UB Fail2 Dis. Tele.Unblocking: FAILURE Channel 2 4082 Dis.T.BL STOPL1 DisTel Blocking: carrier STOP signal, L1 4083 Dis.T.BL STOPL2 DisTel Blocking: carrier STOP signal, L2 4084 Dis.T.BL STOPL3 DisTel Blocking: carrier STOP signal, L3 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 217: Earth Fault Protection In Earthed Systems (Optional)
Naturally in this case also all three phase currents derived from a set of three star connected current transformers must be available and connected to the device. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 218 • 3I0>>>SOTF-Trip, determines whether during switching onto a fault tripping shall be instantaneous (YES) or not (NO) with this stage. • 3I0>>>InrushBlk which is used to switch the inrush stabilization (rush blocking) on (YES) or off (NO). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 219 2nd har- monic. Therefore it is particularly suited for a highly-sensitive earth fault detection. A fourth definite-time stage can be implemented by setting the „inverse-time“ stage (refer to the next paragraph) to definite-time stage. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 220 It is also possible to implement this stage equally with a definite time delay. In this case 3I0p PICKUP is the pickup threshold and Add.T-DELAY the definite time delay. The inverse time characteristic is then effectively bypassed. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 221 Further information regarding the effect of the various parameters can be found in the setting information of the function parameters in Section 2.8.2. The remaining setting options are the same as for the other curves. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 222 The voltage/time characteristic can be displaced in voltage direction by a constant voltage (U0inv. minimum, valid for t → ∞) and in time direction by a constant time (T forw. (U0inv)). The characteristics are shown in the Technical Data. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 223 For meshed earthed systems the zero-sequence voltage increases towards the earth fault location. The inverse characteristic results in the shortest command time for the relay closest to the fault. The other relays then reset. Figure 2-107 Directional zero-sequence voltage time protection with non-directional backup stage SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 224 The power-time characteristic can be displaced in power direction via a reference value S (= basic value for the inverse characteristic for ϕ = ϕ ) and in time direction by a factor k. comp SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 225 To avoid this, the earth current stages are stabilized by the phase current: as the phase currents increase, the pickup thresholds are increased (Figure 2-109). The stabilization factor (= slope) can be changed with parameter Iph-STAB. Slope (address 3104). It applies to all stages. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 226 It requires, how- ever, that at least a substantial amount of the earth fault currents are fed via the transformer whose starpoint current is measured. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 227 Figure 2-117. For this reason, the system may automatically indicate a "forwards" direction when the zero-sequence voltage drops below the threshold value 3186 3U0< forward. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 228 The direction is determined by the larger of the two values. The direction is not determined during the single- pole dead time. For the application of a teleprotection scheme, the direction determination must be performed at all terminals with the same setting. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 229 Single-pole tripping is prevented by the setting or three-pole coupling of other internal protection functions or of an external reclosing device via binary input. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 230 External indication of the phase-selective pickup is performed via the information „E/F L1 selec.“ etc. This information appears only if the phase was clearly detected. Single-pole tripping requires of course the general prerequisites to be fulfilled (device must be suited for single-pole tripping, single-pole tripping allowed). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 231 Functions 2.8 Earth Fault Protection in Earthed Systems (optional) Figure 2-113 Logic diagram of single-pole tripping with phase selector SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 232 40ms after reclosure to prevent signal race conditions. If the complete function is blocked, the indication „E/F BLOCK“ (No. 1332) is output. The blocking of individual stages is signaled by the indications 14080 to 14083. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 233 The non-delayed tripping in case of line energization detection is blocked as long as the inrush-stabilization recognizes a rush current. This prevents instantaneous tripping by a stage which, under normal conditions, is sufficiently delayed during energization of a transformer. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 234: Setting Notes
When setting stages separat., the parameters for phase-selective blocking become visible (3116 BLK /1p 3I0>>>, 3126 BLK /1p 3I0>>, 3136 BLK /1p 3I0> and 3157 BLK /1p 3I0p), parameter 3103 BLOCK 1pDeadTim is hidden. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 235 (refer to Section 2.1.1.3, address 131 Earth Fault O/C = Definite Time). For this stage, the address 3141 3I0p PICKUP then determines the current pickup threshold and address 3147 Add.T-DELAY the definite time delay. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 236 During the selection of the current and time settings, regard must be taken as to whether a stage should be direction dependent and whether it uses teleprotection. Refer also to the margin headings „Determination of Direction“ and „Teleprotection with Earth Fault Protection“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 237 3I0p MinT-DELAY (address 3142) determines the lower limit on the time axis. For currents larger than 35 · 3I0p PICKUP the operating time no longer decreases. Finally, at address 3147 Add.T-DELAY a fixed time delay can be set as was done for the other curves. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 238 In address 3184, an additional time T forw. (U0inv) that is added to the voltage-controlled characteristic can be set for directional-controlled tripping. With the non-directional time T rev. (U0inv) (address 3185) a non-directional back-up stage can be gen- erated. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 239 S ref can be set for displacement in power direction. The time setting Add.T-DELAY (address 3147) allows an additional power-independent delay time to be set. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 240 3U2> (address 3166) and 3I2> (address 3167) are decisive for the lower limit of the direction determination. The setting values must in this case also be selected such that operational asymmetry in the system does not lead to a pickup. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 241 The ancillary function for increased directional sensitivity for long lines is set with parameter 3186 3U0< forward. With default setting 0, the ancillary function is disabled. This parameter can only be altered in DIGSI at Display Additional Settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 242 3187 XserCap. To prevent the compensation from falsifying the direction measurement in case of reverse faults, the parameter 3187 XserCap must be set lower or equal to the zero- sequence reactance of the line. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 243 By means of the setting in address 3104 Iph- STAB. Slope the preset value of 10 % for all stages can be jointly changed for all stages. This parameter can only be changed in DIGSI at Display Additional Settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 244: Settings
Reverse Non-Directional Inactive 3111 3I0>>> 0.05 .. 25.00 A 4.00 A 3I0>>> Pickup 0.25 .. 125.00 A 20.00 A 3112 T 3I0>>> 0.00 .. 30.00 sec; ∞ 0.30 sec T 3I0>>> Time delay SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 245 T 3I0> Time Delay 3133 3I0> Telep/BI Instantaneous trip via Tele- prot./BI 3134 3I0> SOTF-Trip Instantaneous trip after SwitchOnToFault 3135 3I0> InrushBlk Inrush Blocking 3136 BLK /1p 3I0> Block 3I0> during 1pole No (non-dir.) dead time SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 246 10 VA S ref for Sr-characteristic 5 .. 500 VA 50 VA 3157 BLK /1p 3I0p Block 3I0p during 1pole No (non-dir.) dead time 3158 Trip 1p 3I0p Single pole trip with 3I0p SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 247 0.1 .. 10.0 V; 0 0.0 V 3U0 min for forward direc- tion 3187A XserCap 0.000 .. 600.000 Ω 0.000 Ω Reactance X of series ca- pacitor 0.000 .. 120.000 Ω 0.000 Ω SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 248: Information List
E/F Inrush picked up 14080 E/F 3I0>>>BLOCK E/F 3I0>>> is blocked 14081 E/F 3I0>> BLOCK E/F 3I0>> is blocked 14082 E/F 3I0> BLOCK E/F 3I0> is blocked 14083 E/F 3I0p BLOCK E/F 3I0p is blocked SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 249: Teleprotection For Earth Fault Protection (Optional)
(refer to Figure 2-118) and secured against loss of auxiliary supply. It is only possible to switch on from the source from where it had previously been switched off. To be active, it is necessary that the function is switched on from all three switching sources. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 250: Directional Comparison Pickup
This ensures that the permissive signal releases the op- posite line end even if the earth fault is very rapidly cleared by a different independent protection. Figure 2-119 Operation scheme of the directional comparison pickup SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 251 — without the device having detected a fault. The circuit breaker can also be tripped at the line end with no or only weak infeed. This „weak-infeed tripping“ is referred to in Section 2.11.2. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 252 Functions 2.9 Teleprotection for Earth Fault Protection (optional) Figure 2-120 Logic diagram of the directional comparison scheme (one line end) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 253: Directional Unblocking Scheme
This ensures that the permissive signal releases the op- posite line end even if the earth fault is very rapidly cleared by a different independent protection. Figure 2-121 Operation scheme of the directional unblocking method SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 254 — without the device having detected a fault. The circuit breaker can also be tripped at the line end with no or only weak infeed. This „weak-infeed tripping“ is referred to in Section 2.11.2. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 255 Functions 2.9 Teleprotection for Earth Fault Protection (optional) Figure 2-122 Logic diagram of the unblocking scheme (one line end) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 256 Functions 2.9 Teleprotection for Earth Fault Protection (optional) Figure 2-123 Unblock logic SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 257: Directional Blocking Scheme
The receive signals are then combined with a logical OR gate as no blocking signal must be received from any line end during an internal fault. With the parameter Line Config. (address 3202) the device is informed as to whether it has one or two opposite line ends. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 258 Functions 2.9 Teleprotection for Earth Fault Protection (optional) Figure 2-125 Logic diagram of the blocking scheme (one line end) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 259: Transient Blocking
With the blocking scheme the transient blocking prolongs also the received blocking signal as shown in the logic diagram Figure 2-126. After expiration of TrBlk BlockTime (address 3210) the delay time Release Delay (address 3208) is restarted. Figure 2-126 Transient blocking SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 260: Measures For Weak Or Zero Infeed
Figure 2-127 shows the generation of the echo release signal. Since this function is also associated with the weak infeed tripping, it is described separately (see Section 2.11.1). Figure 2-127 Generation of the echo release signal SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 261: Setting Notes
I or I must then be larger than in the situation described previously. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 262 BlockTime when the direction measurement is not as fast as the pick-up (signal transients). A setting of 10 ms to 40 ms is generally applicable depending on the operating (tripping) time of the relevant circuit breaker on the parallel line. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 263: Settings
0.00 .. 30.00 sec; ∞ 0.04 sec Transient Block.: Duration exter- nal flt. 3210A TrBlk BlockTime 0.00 .. 30.00 sec 0.05 sec Transient Block.: Blk.T. after ext. flt. 3212A EF TRANSBLK DIS EF transient block by DIS SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 264: Information List
E/F Telep. Unblocking: FAILURE Channel 1 1388 EF TeleUB Fail2 E/F Telep. Unblocking: FAILURE Channel 2 1389 EF Tele BL STOP E/F Telep. Blocking: carrier STOP signal 1390 EF Tele BL Jump E/F Tele.Blocking: Send signal with jump SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 265: Restricted Earth Fault Protection (Optional)
Figure 2-130 Restricted earth fault protection on an earthed transformer winding Figure 2-131 Earth fault differential protection at a delta winding with earthed artificial starpoint (neutral earthing transformer, zigzag reactor) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 266: Functional Description
For this, the restricted earth fault protection provides stabilization methods which differ strongly from the usual stabilization methods of differential protection schemes since it considers both the magnitude of the measured currents and their direction (phase relation- ship). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 267 = 1. I produces the trip- ping effect quantity, I counteracts this effect. Rest To illustrate the effect, have a look at the three important operating conditions with ideal and adapted measured values: SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 268 Tripping characteristic of the restricted earth fault protection depending on the earth current ratio 3I ”/3I ' (both currents in phase + or counter-phase –); I > = setting; I = tripping current SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 269 Limit Figure 2-137 shows the operating characteristics of the restricted earth fault protection dependent of the phase displacement between 3I " and 3I ' for a constant infeed ratio |3I "| = |3I SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 270 As soon as the fundamental component of the differential current reaches approximately 85 % of the pickup value, pickup is recognized. In this aspect, the differential current is represented by the sum of all in-flowing currents. Figure 2-138 Increasing the pickup value SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 271: Setting Notes
The value indication 5827 „REF S:“ is the restraining quantity resulting from the tripping characteristic, and is not identical with the measured value 30655 „IrestREF=“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 272: Settings
REF picked up Restr. earth flt.: picked up 5821 REF TRIP Restr. earth flt.: TRIP 5826 REF D: REF: Value D at trip (without Tdelay) 5827 REF S: REF: Value S at trip (without Tdelay) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 273: Measures For Weak And Zero Infeed
50 ms (presetting). This prevents echo repetition after the line has been switched off. In the case of the blocking scheme and the underreach schemes, the echo function is not required and there- fore ineffective. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 274 Functions 2.11 Measures for Weak and Zero Infeed Figure 2-140 Logic diagram of the echo function with teleprotection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 275: Classical Tripping
In the case of the earth fault protection, the release signal is routed via the phase segregated logic modules. Single-phase tripping is therefore also possible if both distance protection and earth fault protection or exclu- sively earth fault protection issues a release condition. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 276 Where the distance protection and the earth fault protection function share the same transmission channel (address 2509 = YES) and neither the distance protection nor the earth fault protection are blocked, the output of this gate is an AND combination of the inputs. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 277: Setting Notes
50 ms (default) is usually sufficient. This setting can only be made in DIGSI under Display Additional Settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 278: Tripping According To French Specification
In addition to the classical function of weak infeed, the so called Logic no. 2 (address 125) presents an alternative to the method used so far. This function operates independently of the teleprotection scheme by using its own receive signal and it is able to trip with delay and without delay. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 279 Functions 2.11 Measures for Weak and Zero Infeed Non-delayed Tripping Figure 2-142 Logic diagram for non-delayed tripping SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 280 Functions 2.11 Measures for Weak and Zero Infeed Trip with Delay Figure 2-143 Logic for delayed tripping SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 281: Setting Notes
Moreover, the phase-selective block signals BLOCK Weak Inf affect the non-delayed logic. Faulty pickups are thus prevented, especially after the dedicated line end was shut down. In address 2530 WI non delayed the stage for instantaneous tripping is switched OFF or ON permanently. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 282 To avoid erroneous pickup, phase selection via undervoltage is blocked entirely in the event of voltage failure (pickup of the fuse failure monitor or of the VT mcb). In addition, the relevant phases are blocked when the distance protection function is activated. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 283: Tables On Classical Tripping And Tripping According To French Specification
2520 T 3I0> alarm 0.00 .. 30.00 sec 10.00 sec 3I0> exceeded delay for alarm 2530 WI non delayed WI non delayed 2531 WI delayed by receive fail WI delayed by receive fail SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 284: Information List
Weak Infeed TRIP command - Only L2 4244 Weak TRIP 1p.L3 Weak Infeed TRIP command - Only L3 4245 Weak TRIP L123 Weak Infeed TRIP command L123 4246 ECHO SIGNAL ECHO Send SIGNAL SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 285: Direct Local Trip
„>DTT Trip L123“. If single-pole tripping is desired, you can also use binary inputs „>DTT Trip L1“, „>DTT Trip L2“ and „>DTT Trip L3“. Figure 2-145 thus also applies in this case. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 286: Setting Notes
DTT TRIP command - Only L1 4433 DTT TRIP 1p. L2 DTT TRIP command - Only L2 4434 DTT TRIP 1p. L3 DTT TRIP command - Only L3 4435 DTT TRIP L123 DTT TRIP command L123 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 287: Transmission Of Binary Commands And Messages
Where selection is necessary, it will have to be carried out by appropriate allocation and, if necessary, by a link at the receiving side. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 288: Information List
Remote signal 7 received 3580 Rem.Sig 8recv Remote signal 8 received 3581 Rem.Sig 9recv Remote signal 9 received 3582 Rem.Sig10recv Remote signal 10 received 3583 Rem.Sig11recv Remote signal 11 received 3584 Rem.Sig12recv Remote signal 12 received SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 289 Remote signal 19 received 3592 Rem.Sig20recv Remote signal 20 received 3593 Rem.Sig21recv Remote signal 21 received 3594 Rem.Sig22recv Remote signal 22 received 3595 Rem.Sig23recv Remote signal 23 received 3596 Rem.Sig24recv Remote signal 24 received SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 290: Instantaneous High-Current Switch-Onto-Fault Protection (Sotf)
„SOTF-O/C Rel. Lx“. Single-pole tripping with this stage is possible, but only if the device provides single-pole tripping. Figure 2-146 shows the generation of the enable signals for the I>>> stage. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 291 (an example can be found in the advice on setting notes, Section 2.14.2). The I>>>> stage is enabled automatically by the current-step monitoring of the device for a duration of 50 ms. This stage operates separately for each phase. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 292: Setting Notes
(local and rem.). If set to local and rem., the stage is active when the local end is energized while the circuit breakers at all other terminals of the protected object are opened. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 293 Note: The calculation was carried out with absolute values, which is sufficiently precise for overhead lines. A complex calculation is only needed if the angles of the source impedance and the line impedance vary consid- erably. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 294: Settings
High Speed/SOTF-O/C TRIP - Only L3 4292 HS/SOF TRIP 1p High Speed/SOTF-O/C TRIP 1pole 4293 HS/SOF Gen.TRIP High Speed/SOTF-O/C General TRIP 4294 HS/SOF TRIP 3p High Speed/SOTF-O/C TRIP 3pole 4295 HS/SOF TRIPL123 High Speed/SOTF-O/C TRIP command L123 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 295: Sensitive Earth Flt.(Comp/ Isol. Starp.)
U that phase is detected as the earth faulted phase as long as the remaining phase-earth voltages are simultaneously above the setting value U SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 296 Since the active and reactive component of the current – not the power – determine the earth fault directional decision, these current components are calculated from the power components. Thus for determination of the SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 297 Some indications may not be output when the earth current is too low. Further information can be found in the leaflet „Earth fault detection in isolated neutral or arc-suppression coil earthed high voltage systems“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 298: Setting Notes
1.73 (√3) (see also Subsection 2.1.2.1, margin heading „Voltage Transformer Connection“). In case of a complete displacement of a healthy voltage triangle the displacement voltage has a value that is √3 times the phase-to-phase voltage. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 299 (smallest earth fault current flows through the measuring point). On the secondary side, flows: 50 A/300 = 0.167 A. The relay should be set to approximately half this value ,for example 3I0> = 0.080 A. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 300 (see Figure 2-152). The device thus approximates the transforma- tion curve of the transformer with considerable accuracy. In isolated systems angle compensation is not re- quired. Figure 2-152 Parameters for the phase angle correction SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 301: Settings
Sensitve E/F detection Forward 1277 SensEF Reverse Sensitve E/F detection Reverse 1278 SensEF undefDir Sensitve E/F detection Undef. Direction 1281 SensEF TRIP Sensitve E/F detection TRIP command 1291 SensEF 3U0> Sensitve E/F detection 3U0> pickup SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 302: Backup Time Overcurrent Protection
- or several stages - can be switched to instantaneous tripping. If not all stages are re- quired, the ones not needed can be deactivated by setting the pickup value to ∞. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 303: Functional Description
InstTRIP“ is possible (YES) or impossible (NO). This parameter is also used for instantaneous tripping before automatic reclosure. • I>> SOTF (address 2615), determines whether this stage shall issue non-delayed tripping (YES) or not (NO) in case of switching-onto-fault conditions. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 304 (following figure). A pre-selection of the available characteristics was already carried out during the configuration of the protection functions. Furthermore, an additional constant time delay T Ip Add SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 305 (inverse time overcurrent protection) - example of IEC curve Output indications associated with the pickup signals are listed in Table 2-12 Output indications associated with the trip signals are listed in Table 2-13 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 306 (via a binary input or CFC). Figure 2-155 Logic diagram of the I>>> stage Output indications associated with the pickup signals are listed in Table 2-12 Output indications associated with the trip signals are listed in Table 2-13 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 307 I> PU L2 „O/C PICKUP I>“ 7192 I> PU L3 I> PU E Ip PU L1 2-154 Ip PU L2 2-154 „O/C PICKUP Ip“ 7193 Ip PU L3 2-154 Ip PU E 2-154 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 308 1-pole tripping is active, „O/C TRIP 1p.L1“, „O/C TRIP 1p.L2“ or „O/C TRIP 1p.L3“ is signalled. If tripping is only performed by the 3I0 measuring unit but not by a phase measuring unit, „O/C TRIP L123“ is signalled. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 309: Setting Notes
When using a personal computer and DIGSI to apply the settings, these can be optionally entered as primary or secondary values. For settings with secondary values the currents will be converted for the secondary side of the current transformers. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 310 If the I>> stage, when switching the line onto a fault, is to re-trip without delay or with a short delay, SOTF Time DELAY (address 2602, see above under margin heading „General“), the parameter I>> SOTF (address 2615) is set to YES. Any other stage can be selected as well for this instantaneous tripping. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 311 Since the fast main protection function - differential protection and/or dis- tance protection - guarantees a fast and selective tripping with or without auto-reclosure, the overcurrent pro- tection as a backup protection may not perform a non-selective trip, even before auto-reclosure. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 312 Since the fast main protection function - differential protection and/or dis- tance protection - guarantees a fast and selective tripping with or without auto-reclosure, the overcurrent pro- tection as a backup protection may not perform a non-selective trip, even before auto-reclosure. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 313 Since the fast main protection function - differential protection and/or dis- tance protection - guarantees a fast and selective tripping with or without auto-reclosure, the overcurrent pro- tection as a backup protection may not perform a non-selective trip, even before auto-reclosure. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 314 Instantaneous tripping when the line is switched onto a fault is also possible with the I>>> stage. Set parameter I-STUB SOTF (address 2635) to YES if instantaneous tripping is desired. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 315: Settings
Ip> 0.10 .. 4.00 A; ∞ ∞ A Ip> Pickup 0.50 .. 20.00 A; ∞ ∞ A 2642 T Ip Time Dial 0.05 .. 3.00 sec; ∞ 0.50 sec T Ip Time Dial SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 316: Information List
Backup O/C PICKED UP 7162 O/C Pickup L1 Backup O/C PICKUP L1 7163 O/C Pickup L2 Backup O/C PICKUP L2 7164 O/C Pickup L3 Backup O/C PICKUP L3 7165 O/C Pickup E Backup O/C PICKUP EARTH SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 317 Backup O/C TRIP Phases L123 7221 O/C TRIP I>> Backup O/C TRIP I>> 7222 O/C TRIP I> Backup O/C TRIP I> 7223 O/C TRIP Ip Backup O/C TRIP Ip 7235 I-STUB TRIP O/C I-STUB TRIP SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 318: Automatic Reclosure Function (Optional)
The integrated automatic reclosing function allows up to 8 reclosing attempts. The first four reclose cycles may operate with different parameters (action and dead times, 1-/3-pole). The parameters of the fourth cycle apply to the fifth cycle and onwards. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 319 The normal stages of the distance protection (Z1, Z2, etc.) and the normal grading of the other short-circuit functions are independent of the automatic reclosure function. Figure 2-158 Reach control before first reclosure, using distance protection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 320 (e.g. an overload protection) do not initiate the automatic reclosure function because a reclosure will be of no use here. The circuit breaker failure protection must not start the automatic reclosure function either. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 321 In this case, different dead times (for every AR cycle) are possible after 1- pole tripping and after 3-pole tripping. The protection function that issues the trip command determines the type of trip: 1-pole or 3-pole. The dead time is controlled dependent on this. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 322 However, if the circuit breaker does not indicate its ready status for a longer period than the monitoring time, reclosure is dynamically blocked (see also above under margin heading „Reclosure Blocking“). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 323 After unsuccessful reclosure (final tripping) the automatic reclosure function is blocked dynamically (see also margin heading „Reclose Block“, above). The sequence above applies for single reclosure cycles. In 7SD5 multiple reclosure (up to 8 shots) is also pos- sible (see below). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 324 All faults during the reclaim time also lead to a final 3-pole trip. After unsuccessful reclosure (final tripping), the automatic reclosure function is blocked dynamically (see also margin heading „Reclose Block“, above). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 325 This makes sense because the duration of the 3-pole dead time is most important for the stability of the network. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 326 At III the ADT function can be used for a reclosure after a short delay (to ensure a sufficient voltage measuring time) since the voltage remains if there is also an infeed on busbar B. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 327 This is not critical for a 1-pole interruption or in radial or meshed networks if no stability prob- lems are expected under these conditions. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 328 515 „Relay TRIP 3ph.“ Trip of the device 3-pole. In order to obtain a phase-segregated trip indication, the respective 1-pole trip commands must be combined with the 3-pole trip command on one output. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 329 (No. 511) of 7SD5 (see Figure 2-162) are usually sufficient. Figure 2-161 Connection example with external auto-reclosure device for 1-/3-pole AR with mode selector switch Figure 2-162 Connection example with external reclosure device for 3-pole AR SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 330 (No. 2716) for the trip signal. Figure 2-164 shows an example. Any overreaching stages of the external protec- tion are enabled again by „AR 1.CycZoneRel“ (No. 2889) and of further cycles, if applicable. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 331 Trip mode = 3pole only), the phase-selective pickup signals of the external protection must be connected if distinction shall be made between different types of fault. The general trip command then suffices for tripping (No. 2746). Figure 2-165 shows a connection example. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 332 • In order to prevent that a very quick response (1-pole) of a protection leads to an undesired 3-pole coupling of a second protection, a „software filter time“ for the binary inputs of the auxiliary contacts is to be set (refer to Figure 2-168). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 333 Functions 2.17 Automatic Reclosure Function (optional) Figure 2-166 Connection example for 2 protection devices with 2 automatic reclosure functions Binary inputs Signal output Command for all protection functions operating with AR. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 334 Functions 2.17 Automatic Reclosure Function (optional) Figure 2-167 Connection example for 2 protection devices with internal automatic reclosure function and minimum cross connection Figure 2-168 Setting of the software filter time SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 335: Setting Notes
In this case, the reclaim time should be longer than the time required for the circuit breaker mechanism to be ready. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 336 On the other hand, it should be noted that the line is not available for energy trans- port until the remote end has also closed. Therefore this delay must be added to the dead time for consideration of the network stability. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 337 It is essential that the voltage transformers are located on the line side of the circuit breaker. Details about this function can be found in Section 2.17 at margin heading „Adaptive Dead Time (ADT) and Close Command-transfer (Remote-CLOSE)“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 338 PC and DIGSI. Address 3438 T U-stable defines the measuring time used to determine the voltage. It should be longer than any transient oscillations resulting from line energization. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 339 0.3 s to 0.6 s. If the device is operating with a synchronism check (compare Section 2.18), a longer time may be tolerated under certain circumstances. Longer 3-pole dead times are also possible in radial net- works. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 340 3468 2.AR Tdead3Trip Dead time after 3-pole tripping 3469 2.AR: Tdead EV. Dead time after evolving fault 3470 2.AR: CB? CLOSE CB ready interrogation before reclosing 3471 2.AR SynRequest Sync. check after 3-pole tripping SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 341 If more than four cycles were set during configuration of the functional scope, the dead times preceding the fifth (5th) through the ninth (9th) reclosing attempts are equal to the open circuit breaker time which precedes the fourth (4th) reclosing attempt. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 342 „>Sync.release“ (No. 2731). „>Sync.release“ (No. 2731) Release of reclosure by an external synchronism check device if this was requested by the output information „AR Sync.Request“ (No. 2865). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 343: Settings
WITHOUT WITHOUT Dead Line Check / Reduced Dead Time 3433 T-ACTION ADT 0.01 .. 300.00 sec; ∞ 0.20 sec Action time 3434 T-MAX ADT 0.50 .. 3000.00 sec 5.00 sec Maximum dead time SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 344 Action time 3475 3.AR Tdead 1Flt 0.01 .. 1800.00 sec; ∞ 1.20 sec Dead time after 1phase faults 3476 3.AR Tdead 2Flt 0.01 .. 1800.00 sec; ∞ 1.20 sec Dead time after 2phase faults SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 345 4.AR: Tdead EV. 0.01 .. 1800.00 sec 1.20 sec Dead time after evolving fault 3492 4.AR: CB? CLOSE CB ready interrogation before re- closing 3493 4.AR SynRequest Request for synchro-check after 3pole AR SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 346: Information List
2839 AR Tdead 1pTrip AR dead time after 1pole trip running 2840 AR Tdead 3pTrip AR dead time after 3pole trip running 2841 AR Tdead 1pFlt AR dead time after 1phase fault running SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 347 AR 3.CycZoneRel AR 3rd cycle zone extension release 2892 AR 4.CycZoneRel AR 4th cycle zone extension release 2893 AR Zone Release AR zone extension (general) 2894 AR Remote Close AR Remote close signal send SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 348: Synchronism And Voltage Check (Optional)
If a power transformer is located between the feeder voltage transformers and the busbar voltage transformers (Figure 2-170), its vector group can be compensated for by the 7SD5 relay, so that no external matching trans- formers are necessary. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 349 • Request to execute a check synchronism measurement from an external automatic reclosure device. The measuring request must be activated via the binary input „>Sync. Start AR“ (no. 2906). The release conditions for automatic reclosing apply (parameter AR...). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 350 When a closing command originates from the integrated control function and the conditions for synchronism are not fulfilled, the command is cancelled, i.e. the control function outputs „CO– “ (refer also to Section 2.27.1). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 351 Functions 2.18 Synchronism and Voltage Check (optional) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 352 Released if measuring point Usy1> is energised and the measuring point Usy2< is de-energised. AR Usy1<Usy2< Released if measuring point Usy1< is de-energised and the measuring point Usy2< is also de-energised. AR OVERRIDE Released without any check. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 353 SYNC-STAB. Checking the synchronism conditions can also be confined to the a maximum monitoring time T- SYN. DURATION. This implies that the conditions must be fulfilled within the time T-SYN. DURATION for the duration of T SYNC-STAB. This the case, the closing release is granted. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 354: Setting Notes
± 3 Hz); 1103 FullScaleVolt. nominal operational voltage of the primary power system (phase-phase) in and, if switching under asynchronous system conditions is allowed, 239 T-CB close the closing time of the circuit breaker. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 355 For switching under synchronous conditions you can specify a delay time T SYNC-STAB (address 3508). During this time the voltage criteria must at least be fulfilled before closing is released. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 356 If parameter 1151 SYN.MAN.CL is set to with Sync-check or w/o Sync-check, it is recommended to set the software filter time under DIGSI 4 for the binary input 356 „>Manual Close“ to 50 ms. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 357 U Thr., address 3502); 3539 MC OVERRIDE manual closing or closing via control command is released without any check. The five possible release conditions are independent of one another and can be combined. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 358: Settings
Addresses which have an appended "A" can only be changed with DIGSI, under Additional Settings. Addr. Parameter Setting Options Default Setting Comments 3501 FCT Synchronism Synchronism and Voltage Check function ON:w/o CloseCmd 3502 Dead Volt. Thr. 1 .. 100 V Voltage threshold dead line / bus SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 359 Manual Close at Usy1< and Usy2> 3537 MC Usy1> Usy2< Manual Close at Usy1> and Usy2< 3538 MC Usy1< Usy2< Manual Close at Usy1< and Usy2< 3539 MC OVERRIDE Override of any check before Man.Cl SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 360: Information List
SYNC Udiff too large (Usy2<Usy1) 2980 SYNC fsy2>fsy1 SYNC fdiff too large (fsy2>fsy1) 2981 SYNC fsy2<fsy1 SYNC fdiff too large (fsy2<fsy1) 2982 SYNC ϕsy2>ϕsy1 SYNC PHIdiff too large (PHIsy2>PHIsy1) 2983 SYNC ϕsy2<ϕsy1 SYNC PHIdiff too large (PHIsy2<PHIsy1) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 361: Undervoltage And Overvoltage Protection (Optional)
Every stage starts a time delay which is common to all phases. Expiry of the respective time delay T Uph-e> (address 3703) or T Uph-e>> (address 3705) is signalled and results in the trip command „Uph-e>(>) TRIP“. The overvoltage protection phase-to-earth can be blocked via a binary input „>Uph-e>(>) BLK“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 362 Uph-ph> (address 3712) or Uph-ph>> (address 3714) are also indicated. Beyond this, Figure 2- 172 applies in principle. The phase-to-phase overvoltage protection can also be blocked via a binary input „>Uph-ph>(>) BLK“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 363 For calculating the voltage at the opposite line end, the device requires the line data (inductance per unit length, capacitance per unit length, line angle, line length) which were entered in the Power System Data 2 (Section 2.1.4.1) during configuration. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 364 3744). Figure 2-175 shows the logic diagram. Combined with the associated time delays T U2> (address 3743) and T U2>> (address 3745), these stages form a two-stage overvoltage protection for the negative se- quence system. Here too, the drop-out to pickup ratio can be set. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 365 3725), these stages form a two-stage overvoltage protection for the zero-sequence system. Here too, the drop- out to pickup ratio can be set (3U0>(>) RESET, address 3729). Furthermore, a restraint delay can be config- ured which is implemented by repeated measuring (approx. 3 periods). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 366 Uph / Udelta = 3/√3 = √3 = 1.73. For more details, refer to General Power System Data (Power System Data 1) in Section 2.1.4.1 at margin heading „Voltage Connections“ via address 211. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 367 (also see Section 2.1.2, „Voltage Transformer Connection“). The stages can be blocked via a binary input „>3U0>(>) BLK“. Internal blocking is not accomplished in this application case. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 368: Undervoltage Protection
Only such stages are blocked during the single-pole dead time that can actually generate a trip command according to their setting. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 369 Functions 2.19 Undervoltage and Overvoltage Protection (optional) Figure 2-177 Logic diagram of the undervoltage protection for phase voltages SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 370 BLK“. The stages of the undervoltage protection are automatically blocked if voltage failure is detected („Fuse Failure Monitor“, also see Section 2.24.1) or, if the trip of the mcb for the voltage transformer is indicated via the binary input „>FAIL:Feeder VT“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 371 In this way, the stages do not respond to the reduced positive sequence voltage caused by the disconnected phase in case the voltage transformers are located on the outgoing side. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 372: Setting Notes
For the delay times T Uph-ph> (address 3713) and T Uph-ph>> (address 3715) the same considerations apply as above. The same is true for the dropout ratios (address 3719 Uphph>(>) RESET). The latter setting can only be altered in DIGSI at Display Additional Settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 373 |. For symmetrical voltages and two swapped phases this is equivalent to the phase-to-earth voltage value. The dropout to pickup ratio U2>(>) RESET can be set in address 3749. This parameter can only be altered in DIGSI at Display Additional Settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 374 Uph-e<< stage (address 3754) with the delay T Uph-e<< (address 3755) becomes active. The dropout to pickup ratio Uph-e<(<) RESET can be set in address 3759. This parameter can only be altered in DIGSI at Display Additional Settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 375 However, if the busbar is dead, the undervoltage protection will pick up and expire and then remain in a picked- up state. It must therefore be ensured in such cases that the protection is blocked by a binary input. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 376: Settings
T U1> Time Delay 3734 U1>> 2.0 .. 220.0 V; ∞ 175.0 V U1>> Pickup 3735 T U1>> 0.00 .. 100.00 sec; ∞ 1.00 sec T U1>> Time Delay 3736 U1> Compound U1> with Compounding SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 377 0.00 .. 100.00 sec; ∞ 2.00 sec T U1< Time Delay 3774 U1<< 1.0 .. 100.0 V; 0 10.0 V U1<< Pickup 3775 T U1<< 0.00 .. 100.00 sec; ∞ 1.00 sec T U1<< Time Delay SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 378: Information List
Uph-e> TimeOut 10246 Uph-e>> TimeOut Uph-e>> TimeOut 10247 Uph-e>(>) TRIP Uph-e>(>) TRIP command 10248 Uph-e> PU L1 Uph-e> Pickup L1 10249 Uph-e> PU L2 Uph-e> Pickup L2 10250 Uph-e> PU L3 Uph-e> Pickup L3 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 379 Uph-e<(<) Pickup L2 10314 Uph-e<(<) PU L3 Uph-e<(<) Pickup L3 10315 Uph-e< TimeOut Uph-e< TimeOut 10316 Uph-e<< TimeOut Uph-e<< TimeOut 10317 Uph-e<(<) TRIP Uph-e<(<) TRIP command 10318 Uph-e< PU L1 Uph-e< Pickup L1 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 380 Uphph< PU L23 Uph-ph< Pickup L2-L3 10335 Uphph< PU L31 Uph-ph< Pickup L3-L1 10336 Uphph<< PU L12 Uph-ph<< Pickup L1-L2 10337 Uphph<< PU L23 Uph-ph<< Pickup L2-L3 10338 Uphph<< PU L31 Uph-ph<< Pickup L3-L1 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 381: Frequency Protection (Optional)
Frequency evaluation requires a measured quantity that can be processed. This implies that at least a suffi- ciently high voltage is available and that the frequency of this voltage is within the working range of the frequen- cy protection. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 382 Each of the four frequency stages can be blocked individually by binary inputs. The blocking takes immediate effect. It is also possible to block the entire frequency protection function via binary input. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 383 Functions 2.20 Frequency Protection (optional) Figure 2-179 Logic diagram of the frequency protection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 384: Setting Notes
• Address 3632 f4 PICKUP pickup value for frequency stage f4 at f = 50 Hz, Address 3633 f4 PICKUP pickup value for frequency stage f4 at f = 60 Hz, Address 3634 T f4 trip delay for frequency element f4. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 385: Settings
Pickup 3624 T f3 0.00 .. 600.00 sec 3.00 sec T f3 Time Delay 3631 O/U FREQ. f4 ON: Alarm only ON: Alarm only Over/Under Frequency Protection ON: with Trip stage f4 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 386: Information List
Time Out f1 Frequency protection: TimeOut Stage f1 5241 Time Out f2 Frequency protection: TimeOut Stage f2 5242 Time Out f3 Frequency protection: TimeOut Stage f3 5243 Time Out f4 Frequency protection: TimeOut Stage f4 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 387: Fault Locator
If no sufficient data windows with stabilized values could be determined for fault location, the „Flt.Loc.invalid“ indication is issued. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 388 • The method is stable against the influence of a parallel line, so parallel line compensation is not required. • The accuracy can be increased if the line asymmetry (selection of the central conductor) is taken into ac- count. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 389 If you do not wish an estimation of the asymmetry, it can be switched off. The system assumes lines having a high degree of symmetry with respect to the central phase, in particular a single-level arrangement. Figure 2-181 shows possible phase arrangements. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 390 Load compensation is effective for single–phase faults. Positive and zero phase sequence components are used in the compensation. Load compensation can be switched on or off. Switching it off is useful, for example, during relay testing in order to avoid influences caused by the test quantities. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 391: Setting Notes
If only one line section (address 160 = ) is set, these parameters are: • 1116 RE/RL(Z1), • 1117 XE/XL(Z1) or • 1120 K0 (Z1), • 1121 Angle K0(Z1). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 392 The central phase of your transmission tower layout is specified at address 6008 S1: center ph.. Setting 6008 = assumes a symmetrical layout. Line sections 2 (A2) and 3 (A3) are configured in the same way as described above. For setting values please refer to Table 2-16. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 393 0.000-160.000 µF/mile; 0 0.016 µF/mile 6044 S3: Line length A3: Line length in kilometers A3: Line length in miles 6048 S3: center ph. unknown/sym. A3: Central phase Phase 1 Phase 2 Phase 3 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 394: Settings
Paral.Line Comp Mutual coupling parall.line com- pensation 3806 Load Compensat. Load Compensation 3807 two ended two ended fault location 3811 Tmax OUTPUT BCD 0.10 .. 180.00 sec 0.30 sec Maximum output time via BCD SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 395: Information List
BCD Fault location [20%] 1149 BCD d[40%] BCD Fault location [40%] 1150 BCD d[80%] BCD Fault location [80%] 1151 BCD d[100%] BCD Fault location [100%] 1152 BCD dist. VALID BCD Fault location valid SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 396: Circuit Breaker Failure Protection
(see Figure 2-184). For this purpose, the outputs from the auxiliary contacts must be fed to binary inputs of the relay (refer also to Section 2.25.1). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 397 „>BFactivate3I0>“. This binary input is linked to an external signal which indicates a high resistance fault, e.g. earth fault detection, or detection of displacement voltage. With this method, the more sensitively param- eterized earth current threshold is also used for the phase current monitoring (Figure 2-185). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 398 (Figure 2-188 top) to NO, the circuit breaker failure protection can only be started when current flow is detected. The position of the auxiliary contacts is then not evaluated even if the auxiliary contacts are connected to the device. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 399 CB is open. Figure 2-187 illustrates how the internal signal „CB pole ≥L1 closed“ is created (see Figure 2-188 left) if at least one circuit breaker pole is closed. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 400 Initiation can be blocked via the binary input „>BLOCK BkrFail“ (e.g. during test of the feeder protection relay). Figure 2-188 Breaker failure protection with common phase initiation SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 401 In principle, the starting condition logic for the delay time(s) is designed similar to that for the common phase initiation, however, individually for each of the three phases (as shown in Figure 2-191). Thus, current and ini- SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 402 The additional release-signal „>BF release“ (if assigned to a binary input) affects all external initiation con- ditions. Initiation can be blocked via the binary input „>BLOCK BkrFail“ (e.g. during test of the feeder pro- tection relay). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 403 Functions 2.22 Circuit Breaker Failure Protection Figure 2-191 Initiation conditions for single-pole trip commands SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 404 1-pole or 3-pole. In case of a multi-pole tripping of the feeder protection, T1-1pole and T1-3pole are started simultaneously. By means of T1-3pole, the tripping of the circuit breaker failure protection can be ac- celerated in comparison to T1-1pole. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 405 (T2StartCriteria = With exp. of T1) or simultaneously with it (T2StartCriteria = Parallel withT1). The time T2 can also be initiated via a separate binary input 1424 „>BF STARTonlyT2“. Figure 2-194 Logic diagram of the two-stage breaker failure protection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 406 Thus, the fault current does not stop flowing even though the feeder circuit breaker has properly responded to the trip command. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 407 If pole discrepancy is detected, this is indicated by a fault detection signal. This signal identifies the pole which was open before the trip command of the pole discrepancy supervision occurred. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 408: Setting Notes
If the circuit breaker does not respond to this trip repetition, the adjacent circuit breakers are tripped after T2, i.e. the circuit breakers of the busbar or of the concerned busbar section and, if necessary, also the circuit breaker at the remote end unless the fault has been cleared. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 409 In order to prevent an AR after „BF T2-TRIP(bus)“, the time 3408 T-Start MONITOR can be set in such a way that it expires simultaneously with T2 . Figure 2-199 Time sequence example for normal clearance of a fault, and with circuit breaker failure, using two-stage breaker failure protection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 410 Address 3908 Trip BkrDefect. determines to which output the trip command is routed in the event that the circuit breaker is not operational when a feeder protection trip occurs. Select that output which is used to trip the adjacent circuit breakers (bus-bar trip). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 411 The time should be less than the permissible duration of an unbalanced load condition which is caused by the unsymmetrical position of the circuit breaker poles. Conventional values are 2 s to 5 s. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 412: Settings
0.00 .. 30.00 sec; ∞ 2.00 sec Trip delay of end fault pro- tection 3931 PoleDiscrepancy Pole Discrepancy supervi- sion 3932 T-PoleDiscrep. 0.00 .. 30.00 sec; ∞ 2.00 sec Trip delay with pole dis- crepancy SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 413: Information List
BF CBdiscr L1 BF Pole discrepancy pickup L1 1498 BF CBdiscr L2 BF Pole discrepancy pickup L2 1499 BF CBdiscr L3 BF Pole discrepancy pickup L3 1500 BF CBdiscr TRIP BF Pole discrepancy Trip SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 414: Thermal Overload Protection
. It reports an overload current prematurely, even if the calculated overtemperature has not yet attained alarm the warning or tripping temperature levels. The overload protection can be blocked via a binary input. In doing so, the thermal images are also reset to zero. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 415: Setting Notes
Please note that the overload capability of electrical equipment relates to its primary current. This has to be considered if the primary current differs from the nominal current of the current transformers. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 416 · I . It can also be used instead of the thermal alarm stage. In this case the thermal alarm stage is set to 100 % and is thus practically ineffec- tive. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 417: Settings
Th.O/L I Alarm Th. Overload: Current Alarm (I alarm) 1516 Th.O/L Θ Alarm Th. Overload Alarm: Near Thermal Trip 1517 Th.O/L Pickup Th. Overload Pickup before trip 1521 Th.O/L TRIP Th. Overload TRIP command SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 418: Monitoring Functions
A checksum for the parameter memory (FLASH-EPROM) is cyclically generated and compared with the check- sum which is computed after each change of the stored parameters. If a malfunction occurs, the processor system is restarted. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 419 (address 220) as In prot. line. Furthermore, the fourth current measuring must be de- signed as normal I transformer. With a sensitive transformer type, the current sum supervision is not active. Figure 2-202 Current sum monitoring SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 420: Software Monitoring
(address 2905) represents the allowable asymmetry of the phase currents while the limit value BALANCE I LIMIT (address 2904) is the lower limit of the operating range of this monitoring (see Figure 2-203). The dropout ratio is about 97%. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 421 BALANCE U-LIMIT (address 2902) is the lower limit of the operating range of this monitoring (see Figure 2- 204). The resetting ratio is about 97 %. After a settable time, this malfunction is signaled as „Fail U balance“ (no. 167). Figure 2-204 Voltage symmetry monitoring SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 422 This state may give rise to hazardous overvoltages in the open CT circuit, which will not lead to a trip because the differential protection is blocked. Figure 2-205 Generating the suspected local wire break information SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 423 Multipole wire break is not indicated in emergency operation. It has to be observed that electronic test devices do not behave like a circuit breaker so that pickup can occur during such tests. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 424 Functions 2.24 Monitoring Functions Figure 2-206 Broken wire monitoring SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 425 VT miniature circuit breaker and the „Fuse Failure Monitor“ can be used at the same time. Figures 2-207 and 2-208 depict the logic diagram of the „Fuse Failure Monitor“. Figure 2-207 Fuse failure monitoring Part 1: Detection of asymmetrical measuring voltage failure SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 426 Due to the de-energization in one phase, an operational asymmetry is caused on the primary side which cannot be distinguished from a measuring voltage failure in the secondary circuit (not represented in the logic diagram). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 427 FuseFail“ (No. 170) previously has been generated by an asymmetrical measuring voltage failure. The mea- suring voltage failure is still detected in this state if the three phase-to-earth voltages subsequently fall below the threshold value FFM U<max (3ph) (address 2913 ). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 428 If this monitoring function picks up, the indication „Fail U absent“ (no. 168) will be issued. The effect of this monitoring indication will be described in the following section „Effect of the Measuring Voltage Failure“. Logic diagram of the additional measured voltage failure monitoring „Fail U absent“ Figure 2-209 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 429: Monitoring The Phase Angle Of The Positive Sequence Power
0° and 359°. The area starts at ϕA and extends in a mathematically positive sense as far as the angle ϕB. A hysteresis of 2° is provided to prevent erroneous indications which might emerge at the threshold limits. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 430 Characteristic of the Positive Sequence System Phase Angle Monitoring The monitoring function can also be used for the display of negative active power. In this case the areas must be defined as shown in Figure 2-212. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 431 361 „>FAIL:Feeder VT“ must not be present. If monitoring is not active, this fact is signaled by the indication „ϕ(PQ Pos) block“ (No. 131). Figure 2-213 shows the logic of the positive sequence system phase angle monitoring. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 432: Fault Reactions
LED „RUN“ goes off. If the internal auxiliary voltage supply fails, all LEDs are dark. Table 2-17 shows a summary of the monitor- ing functions and the malfunction responses of the device. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 433 As allocated acquisition) Voltage symmetry External (power system or Indication „Fail U balance“ (167) As allocated voltage transformer) Voltage phase External (power system or Indication „Fail Ph. Seq.“ (171) As allocated sequence connection) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 434 „FAIL: Trip cir.“ (6865) As allocated (trip circuit or control voltage) After three unsuccessful restart attempts, the device is shut down. DOK = „Device Okay“ = Break contact of the readiness relay = Life contact SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 435: Setting Notes
In case of a 1-1/2 circuit breaker arrangement, the parameter 208 1-1/2 CB is to be set to YES. Parameter 2935 ΔI min indicates the minimum difference for this circuit breaker arrangement by which the current would decrease in case of a wire break. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 436 If the auxiliary contact of the mcb fails to meet this requirement, the response time must be set at address 2921 T mcb. This, however, will delay the response of the protection function. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 437: Settings
T mcb 0 .. 30 ms 0 ms VT mcb operating time 2931 BROKEN WIRE Fast broken current-wire supervision Alarm only 2933 FAST Σ i SUPERV State of fast current sum- mation supervis SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 438: Information List
>RESET broken wire monitoring 3271 Broken Iwire L1 IntSP Alarm: Broken current-wire detected L1 3272 Broken Iwire L2 IntSP Alarm: Broken current-wire detected L2 3273 Broken Iwire L3 IntSP Alarm: Broken current-wire detected L3 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 439: Trip Circuit Supervision
Aux1 Circuit breaker auxiliary contact (NO contact) Aux2 Circuit breaker auxiliary contact (NC contact) U-CTR Control voltage (trip voltage) U-BI1 Input voltage of 1st binary input U-BI2 Input voltage of 2nd binary input SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 440 BImin a system control voltage of over 38 V. A calculation example for the bypass resistor R is shown in the configuration notes in Section „Mounting and Connections“, margin heading „Trip Circuit Supervision“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 441 Alarm Delay (see also Figure 2-217). After clearance of the failure in the trip circuit, the fault message automatically resets with the same time delay. Figure 2-217 Logic diagram for trip circuit supervision with one binary input SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 442: Setting Notes
Failure Trip Circuit 6866 TripC1 ProgFAIL TripC1 blocked: Binary input is not set 6867 TripC2 ProgFAIL TripC2 blocked: Binary input is not set 6868 TripC3 ProgFAIL TripC3 blocked: Binary input is not set SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 443: Function Control And Circuit Breaker Test
(adjustable with the address 1150 SI Time Man.Cl). This setting can only be changed using DIGSI at Additional Settings. Figure 2-218 shows the logic diagram. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 444 Figure 2-219 Manual closure with internal automatic reclosure Circuit breaker Circuit breaker close coil CBaux Circuit breaker auxiliary contact SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 445 The detected energization is signalled through the message „Line closure“ (No. 590). The parameter 1132 SI Time all Cl. is used to set the signal to a defined length. These settings can only be changed via DIGSI at Display Additional Settings. Figure shows the logic diagram. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 446 In order to generate a trip command as quickly as possible after an energization, the fast switch onto fault protection is released selectively for each phase already when the line is open. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 447: Detection Of The Circuit Breaker Position
(exception: A fault between current transformer and circuit breaker). If the circuit breaker is closed, it may, however, still occur that no current is flowing. The decisive setting for the evaluation of the measuring quantities is PoleOpenCurrent (address 1130) for the presence of the currents. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 448 This way, the circuit breaker positions of all ends are known at all ends. The highcurrent switch-on- to-fault protection (Section 2.14) makes use of this function. Figure 2-222 Circuit breaker position logic SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 449: Open Pole Detector
Single-pole dead times can be detected and reported via the Open Pole Detector. The corresponding protec- tion and monitoring functions can respond. The following figure shows the logic structure of an Open Pole De- tector. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 450 Functions 2.25 Function Control and Circuit Breaker Test Figure 2-223 Open pole detector logic SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 451: Pickup Logic Of The Entire Device
• Generation of spontaneous indications: Certain fault indications can be displayed as spontaneous indica- tions (see margin heading „Spontaneous Indications“). In addition, this indication can be made dependent on the general device trip. • Start action time of automatic reclosure (if available and used). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 452: Tripping Logic Of The Entire Device
3pole coupling (address 1155), which can be set to with PICKUP (every multiple-phase fault detection causes three-pole trip) or with TRIP (in the event of multiple-phase trip conditions, the tripping is always three-pole). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 453 (any) (any) (any) (any) (any) (any) 3pole 1pole leading Ø 1pole lagging Ø 3pole 1pole leading Ø 1pole lagging Ø 3pole 1pole leading Ø 1pole lagging Ø (any) (any) (any) (any) (any) (any) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 454 If this additional condition is not required for resetting the trip command (e.g. if test sockets are used for protection testing), it can be switched off with the setting Pickup Reset. Figure 2-224 Storage and termination of the trip command SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 455 For each case please ensure that the corresponding logic operations, security measures, etc. are taken into account when routing the binary inputs and outputs and may have to be considered when creating the user- defined logic functions. See also the SIPROTEC 4 System Description. SIPROTEC, 7SD5, Manual...
Page 456 (e.g. tripping only occurred after the action time expired). Figure 2-227 shows time diagrams for manual trip and close as well as for short-circuit tripping with a single, failed automatic reclosure cycle. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 457: Circuit Breaker Test
The test is started using the operator panel on the front of the device or using the PC with DIGSI. The procedure is described in detail in the SIPROTEC 4 System Description. Figure 2-228 shows the chronological sequence of one TRIP–CLOSE test cycle. The set times are those stated in Section 2.1.2.1 for „Trip Command Duration“...
Page 458: Information List
CB-TEST canceled due to CB already OPEN 7348 CB-TSTstop NOTr OUT_Ev CB-TEST canceled due to CB was NOT READY 7349 CB-TSTstop CLOS OUT_Ev CB-TEST canceled due to CB stayed CLOSED 7350 CB-TST .OK. OUT_Ev CB-TEST was successful SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 459: Device
(Target on TRIP) unless this fault has lead to a trip command of the device. Note Setting the address 610 FltDisp.LED/LCD to (Target on TRIP) only makes sense if address 625 T MIN LED HOLD is set to 0. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 460: Switching Statistics
The counter and memory content are secured against loss of auxiliary voltage. They can be set to zero or to any other initial value. For more details, please refer to the SIPROTEC 4 System Description. 2.25.3.3 Setting Notes...
Page 461: Settings
Device OK Device is Operational and Protecting ProtActive IntSP At Least 1 Protection Funct. is Active Reset Device Reset Device Initial Start Initial Start of Device Reset LED OUT_Ev Reset LED Resume Resume SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 462 Warn: Limit of Memory Parameter exceeded Warn Mem. Oper. Warn: Limit of Memory Operation exceeded Warn Mem. New Warn: Limit of Memory New exceeded 2054 Emer. mode Emergency mode 4051 Telep. ON IntSP Teleprotection is switched ON SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 463: En100-Modul 1
This allows open and interoperable use of SIPROTEC 4 devices even in heterogeneous environments. In parallel to the process control integration of the device, this interface can also be used for communication with DIGSI and for inter-relay communication via GOOSE.
Page 464: Additional Functions
The WEB-Monitor is an integral part of the device. The respective online-help is available with DIGSI on CD-ROM or via the internet at www.siprotec.de. To ensure proper communication between the device and the PC browser, several prerequisites must be met.
Page 465 In each case a list with the desired infor- mation is displayed (see Figure 2-231 and 2-233). Figure 2-232 Local measured values in the WEB-Monitor — Examples for measured values SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 466: Setting Notes
The relevant IP address of the interface is the one that is used for communication with the PC and the WEB-Monitor. Make sure that the 12-digit IP address valid for the browser is set correctly via DIGSI in the format ***.***.***.***. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 467: Processing Of Messages
Important events and states are displayed by LEDs on the front cover. The device also contains output relays for remote signaling. Most indications and displays can be configured differently from the delivery default set- tings (for information on the delivery default setting see Appendix). The SIPROTEC 4 System Description gives a detailed description of the configuration procedure.
Page 468 To influence information at the system interface during test mode („test mode“ and „transmission block“), a CFC logic is required. Default settings already include this logic (see Appendix). The SIPROTEC 4 System Description describes in detail how to activate and deactivate test mode and blocked data transmission.
Page 469 After a fault, automatically and without operator action, the most important fault data from the general device pickup appear on the display in the sequence shown in the following figure. Figure 2-236 Spontaneous fault indication display SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 470: Statistics
Spontaneous indications can be read out via DIGSI. For more information see the SIPROTEC 4 System De- scription. General Interrogation The present condition of the SIPROTEC 4 device can be retrieved via DIGSI by viewing the contents of the General Interrogation. It shows all indications that are subject to general interrogation with their current value. 2.26.3...
Page 471: Information List
Prot.Interface 2: Availability per hour 7875 PI1 TD R Prot.Interface 1:Transmission delay rec. 7876 PI1 TD S Prot.Interface 1:Transmission delay send 7877 PI2 TD R Prot.Interface 2:Transmission delay rec. 7878 PI2 TD S Prot.Interface 2:Transmission delay send SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 472: Measurement During Operation
Using parameter 1107 P,Q sign the signs for these components can be inverted. The operational measured values are also calculated in the event of a running fault in intervals of approximately 0.5 s. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 473 Measured frequency values – – diff (for synchronism check) ° Amount of phase angle difference – – ϕ Diff between line and busbar (for synchronism check) according to address 1104 according to address 1103 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 474: Information List
U1co (positive sequence, compounding) U0 = U0 (zero sequence) 3I0senA Active 3I0sen (sensitive Ie) 3I0senR Reactive 3I0sen (sensitive Ie) Θ/Θtrip = Temperat. rise for warning and trip Temperature rise for phase L1 Θ/ΘtripL1= SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 475 PHI UL1L2 (local) 7735 Φ UL2L3= PHI UL2L3 (local) 7736 Φ UL3L1= PHI UL3L1 (local) 7737 Φ UIL1= PHI UIL1 (local) 7738 Φ UIL2= PHI UIL2 (local) 7739 Φ UIL3= PHI UIL3 (local) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 476: Differential Protection Values
Measured value charging current L1 7881 Ic L2 = Measured value charging current L2 7882 Ic L3 = Measured value charging current L3 30654 IdiffREF= Idiff REF(% Operational nominal current) 30655 IrestREF= Irest REF(% Operational nominal current) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 477: Measured Values Constellation
Angle UL1_remote <-> UL1_local 7771 „UL2_opN=“ UL2 (% of operational rated voltage) 7772 „ΦU L2=“ Angle UL2_remote <-> UL2_local 7773 „UL3_opN=“ UL3 (% of operational rated voltage) 7774 „ΦU L3=“ Angle UL3_remote <-> UL3_local SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 478: Oscillographic Fault Records
Pow.Sys.Flt.). This facilitates the representation of the entire system fault history, but also consumes storage capacity during the auto reclosure dead time(s). This parameter can only be altered with DIGSI at Ad- ditional Settings. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 479: Settings
0.50 sec Capture Time via Binary Input 2.26.7.4 Information List Information Type of In- Comments formation FltRecSta IntSP Fault Recording Start >Trig.Wave.Cap. >Trigger Waveform Capture 30053 Fault rec. run. Fault recording is running SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 480: Demand Measurement Setup
15 Min., 3 Subs 15 Min.,15 Subs 30 Min., 1 Sub 60 Min., 1 Sub 2802 DMD Sync.Time On The Hour On The Hour Demand Synchronization Time 15 After Hour 30 After Hour 45 After Hour SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 481: Information List
0 .. 1439 min 0 min MinMax Reset Timer 2813 MiMa RESETCYCLE 1 .. 365 Days 7 Days MinMax Reset Cycle Period 2814 MinMaxRES.START 1 .. 365 Days 1 Days MinMax Start Reset Cycle in SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 482: Information List
I1 Max= Positive Sequence Maximum UL1EMin= U L1E Minimum UL1EMax= U L1E Maximum UL2EMin= U L2E Minimum UL2EMax= U L2E Maximum UL3EMin= U L3E Minimum UL3EMax= U L3E Maximum UL12Min= U L12 Minimum SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 483: Set Points (Measured Values)
2.26.10 Set Points (Measured Values) SIPROTEC 4 devices allow thresholds (set points) to be set for some measured and metered values. If one of these set points is reached or is exceeded positively or negatively during operation, the device generates an alarm which is displayed as an operational indication.
Page 484: Limit Value Monitoring
SP. IL3 dmd> Set Point Phase L3 dmd> SP. I1dmd> Set Point positive sequence I1dmd> SP. |Pdmd|> Set Point |Pdmd|> SP. |Qdmd|> Set Point |Qdmd|> SP. |Sdmd|> Set Point |Sdmd|> cosϕ alarm Power factor alarm SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 485: Energy
(normally protection core) and the device tolerances. The metering is therefore not suited for tariff purposes. The counters can be reset to zero or any initial value (see also SIPROTEC 4 System Description). Table 2-24...
Page 486: Command Processing
(CFC). The interlocking conditions of the system can be injected via the system interface and must be allocated accordingly. The procedure for switching resources is described in the SIPROTEC 4 System Description under Control of Switchgear.
Page 487: Sequence In The Command Path
Superimposed commands in the same switching direction are tolerated). Command Execution Monitoring The following is monitored: • Interruption of a command because of a cancel command, • Running time monitor (feedback monitoring time). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 488: Interlocking
System interlocking is based on the process image in the central device. Zone controlled / bay interlocking relies on the object database (feedback information) of the bay unit (here the SIPROTEC 4 relay) as was de- termined during configuration (see SIPROTEC 4 System Description).
Page 489 Standard Interlocking The standard interlocking includes the checks for each switchgear which were set during the configuration of inputs and outputs, see SIPROTEC 4 System Description. An overview for processing the interlocking conditions in the relay is shown in Figure 2-238.
Page 490: Information List
„released“ or „bay interlocked“ are available, e.g. object „Release CD Close“ and „Release CD Open“ with the information values: ON / OFF). 2.27.1.4 Information List Information Type of In- Comments formation ModeREMOTE IntSP Controlmode REMOTE Cntrl Auth IntSP Control Authority ModeLOCAL IntSP Controlmode LOCAL SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 491: Control Device
Fan ON/OFF CF_D2 Fan ON/OFF Fan ON/OFF Fan ON/OFF 31000 Q0 OpCnt= Q0 operationcounter= 31001 Q1 OpCnt= Q1 operationcounter= 31002 Q2 OpCnt= Q2 operationcounter= 31008 Q8 OpCnt= Q8 operationcounter= 31009 Q9 OpCnt= Q9 operationcounter= SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 492: Process Data
Command output/switching relays The command types needed for tripping and closing of the switchgear or for raising and lowering transformer taps have been defined during the configuration, see also SIPROTEC 4 System Description. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 493: Information List
>Error Control Voltage >SF6-Loss >SF6-Loss >Err Meter >Error Meter >Tx Temp. >Transformer Temperature >Tx Danger >Transformer Danger 2.27.4 Protocol 2.27.4.1 Information List Information Type of In- Comments formation SysIntErr. IntSP Error Systeminterface ■ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 494 Functions 2.27 Command Processing SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 495: Mounting And Commissioning
The primary tests require the protected object (line, transformer etc.) to carry load. Mounting and Connections Checking Connections Commissioning Final Preparation of the Device SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 496: Mounting And Connections
Configuration Information Prerequisites For installation and connections the following conditions must be met: The rated device data has been tested as recommended in the SIPROTEC 4 System Description and their compliance with the Power System Data is verified. Connection Variants General Diagrams are shown in Appendix A.2.
Page 497 (high). Table 3-1 Changing setting groups with binary inputs Binary Input Active settings group >Set Group Bit 0 >Set Group Bit 1 Not energized Not energized Group A Energized Not energized Group B SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 498 (Aux1 is open and Aux2 is closed) the circuit breaker trip coil (TC) is no longer picked up and binary input (BI1) is still picked up if the command relay contact is open. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 499 154 V for delivery setting for nominal voltages of 220/250 V Control voltage for trip circuit DC resistance of circuit breaker trip coil Maximum voltage on the circuit breaker trip coil that does not lead to tripping CBTC (LOW) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 500 , and this threshold must be implemented in the relay using plug-in jumpers (see Section „Hard- BI min ware Modifications“). For the power consumption of the resistance the following applies: Example: 1.8 mA (SIPROTEC 4 7SD5) BI (HIGH) 17 V for delivery setting for nominal voltages of 24/48/60 V BI min (from the device 7SD5);...
Page 501: Hardware Modifications
„In- put/output module C-I/O-2“. All jumpers must be set for one nominal current, i.e. one jumper (X61 to X64) for each input transformer and additionally the common jumper X60. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 502 C-I/O-1 (Figure 3-5). The ratings of the fuse are printed on the board next to the fuse. When replacing the fuse, please observe the guidelines given in the SIPROTEC 4 System Description in the chapter „Maintenance“...
Page 503: Disassembly
Non-observance can result in minor personal injury or property damage. In order to avoid electrostatic discharges when handling plug connectors, first touch an earthed metal surface. Do not plug or unplug interface connectors under voltage! SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 504 • Check the jumpers according to Figures 3-5 to 3-13 and the following information. Change or remove the jumpers if necessary. Figure 3-3 Front view with housing size after removal of the front cover (simplified and scaled down) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 505 Mounting and Commissioning 3.1 Mounting and Connections Figure 3-4 Front view with housing size after removal of the front cover (simplified and scaled down) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 506: Switching Elements On Printed Circuit Boards
• On the input/output board C-I/O-1 (No. 2 in Figure 3-4, slot 33 left) for housing size The preset nominal voltage of the integrated power supply is checked according to Table 3-2, the quiescent state of the life contact is checked according to Table 3-3. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 507 BI1 to BI8 (with housing size ) according to Table 3-5, BI1 to BI24 (with housing size depending on version) according to Table 3-7, under margin heading „In- put/output module C-I/O-10 up to release /EE “ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 508 Two different releases of the input/output module CI/O-10 are available. Figure 3-6 shows the layout of the printed circuit board for devices up to release 7SD5 .../EE, figure 3-7 depicts the printed circuit board layout for devices 7SD5 .../FF. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 509 Mounting and Commissioning 3.1 Mounting and Connections Input/output module C-I/O-10 up to release /EE Figure 3-6 Input/output board C-I/O-10 up to release 7SD5 .../EE with representation of the jumper settings required for checking configuration settings SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 510 Table 3-8 Jumper settings of the module address of the input/output module C-I/O-1 or C-I/O-10 up to release 7SD5 .../EE with housing size Jumper Mounting location Slot 19 left side Slot 19 right side SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 511 Mounting and Commissioning 3.1 Mounting and Connections Input/output module C-I/O-10 release /FF and higher Figure 3-7 Input/output board C-I/O-10 release 7SD5.../FF or higher, with representation of jumper settings required for checking configuration settings SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 512 Table 3-10 Jumper setting of the module address of the input/output module C-I/O-10 for release 7SD5 .../FF and higher with housing size Jumper Mounting location Slot 19 left side Slot 19 right side SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 513 The contact of the relay for the binary output BO13 can be configured as NO or NC contact (see also General Diagrams in Appendix A, Section A.2): with housing size : No. 3 in Figure 3-3, slot 33, with housing size : No. 3 in Figure 3-4, slot 33 right. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 514 : No. 3 in Figure 3-4, slot 33 right. Table 3-12 Jumper settings of Board Address of the input/output board C-I/O-2 Jumper Factory Setting 1-2 (H) 1-2 (H) 2-3 (L) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 515 The nominal current or measuring range settings are checked on the input/output board C-I/O-2. Figure 3-9 Input/output board C-I/O-2 release 7SD5**.../FF or higher, with representation of the jumper settings required for checking configuration settings SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 516 Jumpers X71, X72 and X73 serve for setting the bus address. Their position must not be changed. The follow- ing table shows the preset jumper positions. Table 3-16 Jumper setting of the module addresses of the input/output board C-I/O-2 Jumper Factory setting 1-2 (H) 1-2 (H) 2-3 (L) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 517: Interface Modules
Surface-mounted devices with fibre optics connection have their fibre optics module fitted in the inclined housing on the case bottom. The CPU module, however, has an RS232 interface module which communicates electrically with the fibre optics module in the inclined housing. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 518 CPU interface slot. For this application type the jumpers X12 and X13 on the RS232 module are plugged in position 2-3. Figure 3-11 Location of the jumpers for configuration of RS232 Terminating resistors are not required for RS232. They are disconnected. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 519 Therefore the modem control signals according to RS232 standard DIN 66020 are not available. Modem signals are not required since the connection to the SIPROTEC 4 devices is always operated in the half-duplex mode. Please use the connection cable with order number 7XV5100-4.
Page 520 The terminating resistors can also be connected externally (e.g. to the connection module), see Figure 3-14. In this case, the terminating resistors located on the interface module must be switched off. Figure 3-14 Termination of the RS485 interface (external) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 521: Reassembly
A ring lug must be centred in the connection chamber, in such a way that the screw thread fits in the hole of the lug. The SIPROTEC 4 System Description has pertinent information regarding wire size, lugs, bending radii, etc. Installation notes are also given in the brief reference booklet attached to the device.
Page 522 Mounting and Commissioning 3.1 Mounting and Connections Figure 3-15 Panel flush mounting of a device (housing size Figure 3-16 Panel flush mounting of a device (housing size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 523: Rack Mounting And Cubicle Mounting
A ring lug must be centred in the connection chamber so that the screw thread fits in the hole of the lug. The SIPROTEC 4 System Description has pertinent information regarding wire size, lugs, bending radii, etc. Installation notes are also given in the brief reference booklet attached to the device.
Page 524: Panel Mounting
The specifications concerning the maximum cross-section, tightening torques, bending radii and strain relief given in the SIPROTEC 4 System Descrip- tion must be observed. Installation notes are also given in the brief reference booklet that comes with the device.
Page 525: Checking Connections
Figure 3-20 Ethernet connector Operator Interface When the recommended communication cable is used, correct connection between the SIPROTEC 4 device and the PC is automatically ensured. See the Appendix A.1 for an ordering description of the cable. Service interface Check the data connection if the service interface is used to communicate with the device via hard wiring or modem.
Page 526 Figure 3-14). In this case, the terminating resistors located on the module must be dis- abled. If the bus is extended, make sure again that only the terminating resistors at the last device on the bus are connected. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 527 The character idle state for the optical fibre interface is „Light off“. If the character idle state is to be changed, use the operating program DIGSI, as described in the SIPROTEC 4 System Description. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 528: Checking The Protection Data Communication
Verify in address 4502 CONNEC. 1 OVER and/or 4602 CONNEC. 2 OVER (see also Section 2.2.3.1) that the right connection type is parameterized. Further Connections For further connections a visual inspection is sufficient for the time being. Electrical and functional controls are performed during commissioning (see the following main section). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 529: Checking The System Connections
• Check the functions of all test switches that are installed for the purposes of secondary testing and isolation of the device. Of particular importance are test switches in current transformer circuits. Be sure these switch- es short-circuit the current transformers when they are in the „test mode“. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 530 „Device Ok“) picks up. This also signalizes that the clock pulse of the communication network is recognized. Further checks are performed according to Section „Checking the Protection Data Topology“. • You must also observe the documentation supplied with the communication converters. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 531: Commissioning
Non-observance of the following measure can result in death, personal injury or substantial property damage. Primary tests may only be carried out by qualified persons who are familiar with commissioning protection sys- tems, with managing power systems and the relevant safety rules and guidelines (switching, earthing etc.). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 532: Test Mode / Transmission Block
Appendix A.5). If Test mode is set ON, then a message sent by a SIPROTEC 4 device to the main system has an additional test bit. This bit allows the message to be recognized as resulting from testing and not an actual fault or power system event.
Page 533: Testing The System Interface
The sending or receiving of indications via the system interface by means of the test function is a real information exchange between the SIPROTEC 4 device and the control centre. Connected operating equipment such as circuit breakers or disconnectors can be switched in this way! Non-observance of the following measure will result in death, severe personal injury or substantial property damage.
Page 534 Send in the corresponding line. The corresponding message is issued and can be read out either from the event log of the SIPROTEC 4 device or from the substation control center. Further tests remain enabled until the dialog box is closed.
Page 535: Checking The Switching States Of The Binary Inputs/Outputs
Checking the switching states of the binary Inputs/Outputs Prefacing Remarks The binary inputs, outputs, and LEDs of a SIPROTEC 4 device can be individually and precisely controlled in DIGSI. This feature is used to verify control wiring from the device to plant equipment (operational checks) during commissioning.
Page 536 • Each output relay must be tested via the corresponding Scheduled field of the dialog box. • Finish the testing (see margin heading below „Exiting the Procedure“), so that during further testings no un- wanted switchings are initiated. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 537 To end the hardware test, click on Close. The dialog box closes. Thus, all the hardware components are set back to the operating state specified by the plant states. The processor system is restarted, then the device is ready for operation. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 538: Checking The Protection Data Topology
PC (example Figure 3-23). Or you can log into the device using a modem via the service interface (example Figure 3-24) Figure 3-23 PC interfacing directly to one device — schematic example Figure 3-24 PC interfacing via modem — schematic example SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 539 DANGER! Opening the Communication Converter There is danger to life by energized parts! Before opening the communication converter, it is absolutely necessary to isolate it from the auxiliary supply voltage at all poles! SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 540 • Disconnect the auxiliary supply voltage of the communication converter at both poles. Note the above DANGER instruction! • Reset the communication converter to normal position (X32 in position 1-2) and close the housing again. • Reconnect the supply voltage of the communication converter. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 541 Operational power or current (cp. Section 2.1.4) 3487 „Equal IDs“ „Same device address“: The parameter 4710 LOCAL RELAY was set identical for several devices. Finally, there should not be any more fault messages of the protection data interfaces. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 542 Topology and statistics of the protection data interfaces can be graphically displayed on the screen using the WEB Monitor. This requires a personal computer with web browser. Figure 3-26 shows the general information of the communication topology. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 543 The connection cannot be used for protective functions. unknown grey In Figure 3-27, the adjacent channel of a ring topology is designated as additional information. This is done by the thinner connection arrows. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 544 GPS synchronisation. In this case, the values displayed for the runtime propagation time are identical. Figure 3-28 Example of runtime propagation times and availability of the protection data interface SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 545: Checking For Breaker Failure Protection
• Start by 1-pole trip command of the external protection L2: Binary input functions „>BF Start L2“ and, if necessary, „>BF release“ (in spontaneous or fault indi- cations). Trip command (depending on settings). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 546 ...“ further below. Termination of the Checks All temporary measures taken for testing must be undone, e.g. especially switching states, interrupted trip com- mands, changes to setting values or individually switched off protection functions. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 547: Checking The Instrument Transformer Connections Of One Line End
– Check the Event Log and the spontaneous indications to make sure that the VT mcb trip was noticed (in- dication „>FAIL:Feeder VT“ „ON“, no. 361). This requires the position of the circuit breaker for voltage transformers to be communicated to the device via a binary input. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 548: Checking The Transformer Connections With Two Line Ends
The current value of the other end can also be read out locally as percentage values as well as the phase angles. In the „WEB-Monitor“, the local and remote measured values can be graphically displayed. The following figures show an example. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 549 If there are more than two ends, one current path is still tested first. A load current of at least 5 % of the rated operational current is still required. Any direction is possible, but it must be known. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 550 180° (cos ϕ negative). However, charging currents might have to be considered (see above). • The measurements may have to be repeated after correcting the connections. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 551 • The program AR SYNC-CHECK = (address 3515) is set for synchronism check. • Via binary input (No. 2906 „>Sync. Start AR“) initiate the measuring request. The synchronism check must release closing (message „Sync. release“, No. 2951). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 552 Addresses 3515 to 3519 must be restored as they were changed for the test. If the allocation of the LEDs or signal relays was changed for the test, this must also be restored. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 553 The voltages can also be read out with the Web-Monitor. In the event that the pickup alarms were not even generated, the measured earth (residual) current may be too small. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 554 I has a swapped polarity. After isolation of both lines and short- circuiting of the current transformer secondary circuits, the connections must be checked and rectified. Subse- quently the measurement must be repeated. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 555 Primary measurements must only be carried out on disconnected and earthed equipment of the power system! The configuration shown in Figure 3-35 corresponds to an earth current flowing through the line, in other words an earth fault in the forward direction. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 556 If the pickup alarm is missing altogether, this may be due to the fact that the test current is too small. Note If parameters were changed for this test, they must be returned to their original state after completion of the test ! SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 557 If you have modified these current transformers, also perform a power or angle test. • Finally, open the circuit breaker again. • If parameter settings have been changed for the tests, reset them to the values necessary for operation. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 558: Checking The Instrument Transformer Connections For More Than Two Ends
The time displayed by the timer is the real circuit breaker closing time. If the timer is not stopped due to an unfavourable closing moment, the attempt will be repeated. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 559: Checking The Teleprotection System With Distance Protection
(DC closed circuit-loop) is concerned. The examination is described in the following. If a different transmission scheme is applied, this part can be skipped. Detailed information on the function of the pilot-wire comparison is available in Subsection 2.7. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 560 The echo function must be activated at both line ends, i.e. address 2501 FCT Weak Infeed = ECHO only; with the setting ECHO and TRIP a trip command may result at the remote end of the check! SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 561 This test must be performed at both line ends, on a three terminal line at each line end for each transmission path. However, please finally observe the last margin heading „Important for all schemes“! SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 562: Testing Of The Teleprotection System With Earth-Fault Protection
The corresponding send and receive signals must be assigned to the corresponding binary output and input. For the echo function, the echo signal must be separately assigned to the transmit output. Detailed information on the function of the permissive scheme is given in Section 2.9. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 563 This test must be performed at both line ends, on a three terminal line at each line end for each transmission path. However, please finally observe the last margin heading „Important for All Schemes“! SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 564: Check Of The Signal Transmission For Breaker Failure Protection And/Or End Fault Protection
A general procedure cannot in the nature of things be specified. Configuration of these functions and the set value conditions must be actually known beforehand and tested. Especially, possible interlocking conditions of the switching devices (circuit breakers, isolators, grounding electrodes) must be observed and checked. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 565: Trip And Close Test With The Circuit Breaker
For devices with graphic display this is easy to do with the control display. The switching procedure is described in the SIPROTEC 4 System Description. The switching authority must be set in correspondence with the source of commands used. With the switching mode, you can choose between locked and unlocked switching.
Page 566: Triggering Oscillographic Recording For Test
Oscillographic recording is immediately started. During the recording, an annunciation is output in the left area of the status line. Bar segments additionally indicate the progress of the procedure. The SIGRA or the Comtrade Viewer program is required to view and analyse the oscillographic data. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 567: Final Preparation Of The Device
The green „RUN“ LED must light up, whereas the red „ERROR“ must not light up. Close the protective switches. If test switches are available, then these must be in the operating position. The device is now ready for operation. ■ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 568 Mounting and Commissioning 3.4 Final Preparation of the Device SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 569: Technical Data
Technical Data This chapter lists the technical data of the SIPROTEC 4 device 7SD5 and its individual functions, including the limit values that must not be exceeded under any circumstances. The electrical and functional data of fully equipped devices are followed by the mechanical data, with dimensional drawings.
Page 570 Technical Data 4.26 Additional Functions 4.27 Dimensions SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 571: General
80 V to 125 V (adjustable) Measuring range 0 V to 218.5 V (rms) Power consumption per phase At 100 V ≤ 0.1 VA Voltage overload capability per phase - thermal (rms) 230 V continuous SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 572: Auxiliary Voltage
- Energized 7SD5***-*A/E/J Approx. 17 VA 7SD5***-*C/G/L/N/Q/S Approx. 20 VA 7SD5***-*D/H/M/P/R/T Approx. 23 VA plus approx. 1.5 VA per interface module Bridging time for failure/short circuit of alternating ≥ 50 ms auxiliary voltage SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 573: Binary Inputs And Outputs
Current consumption, energized Approx. 1.8 mA, independent of control voltage Maximum permissible voltage DC 300 V Impulse filter on input 220 nF coupling capacitance at 220 V with recovery time > 60 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 574 5 A General Purpose DC 48 V 0.8 A General Purpose DC 240 V 0.1 A General Purpose AC 120 V 1/6 hp (4.4 FLA) AC 240 V 1/2 hp (4.9 FLA) UL listed SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 575: Communications Interfaces
62.5 μm / 125 µm Permissible optical signal attenuation max. 8 dB, with glass fibre 62.5 μm / 125 µm Transmission distance Max. 1.5 km (0.93 miles) Character idle state Selectable, factory setting „Light off“ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 576 62.5 μm / 125 µm Permissible optical signal attenuation max. 8 dB, with glass fibre 62.5 μm / 125 µm Transmission distance max. 1.5 km Character idle state selectable, factory setting „Light off“ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 577 Connection for surface-mounting housing at the bottom side of the console housing 9-pole D-subminiature female connector Test voltage 500 V; 50 Hz Transmission rate up to 19 200 baud Transmission distance max. 1 km SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 578 5 dB, with glass fibre 62.5 μm / 125 µm Transmission distance max. 800 m The OLM converter requires an operating voltage of DC 24 V. If the operating voltage is > DC 24 V, the additional power supply 7XV5810-0BA00 is required. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 579: Electrical Tests
Impulse voltage test (type test) 5 kV (peak), 1.2/50 µs, 0.5 Ws, 3 positive and 3 negative impuls- All Circuits Except Communication and Time Synchroni- es at intervals of 5 s zation Interfaces, Class III SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 580 Radiated Electromagnetic Interference 35 V/m; 80 MHz to 1000 MHz; Keying test IEEE Std C37.90.2-2004 Damped oscillations IEC 60694, IEC 61000-4-18 2,5 kV (peak value), polarity alternating 100 kHz, 1 MHz, R 200 Ω SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 581: Mechanical Tests
3 shocks (in both directions of the 3 axes) Continuous shock Semi-sinusoidal IEC 60255-21-2, Class 1 10 g acceleration, duration 16 ms, IEC 60068-2-29 1000 shocks each in both directions of the 3 axes SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 582: Climatic Stress Tests
EEC standards (standards for Electrostatically Endan- gered Components) must be observed. The modules, boards, and device are not endangered when the device is com- pletely assembled. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 583: Certifications
IP 51 Back IP 50 For human safety IP 2x with cover cap UL-certification conditions Type 1 for front panel mounting Surrounding air temperature: tsurr: max 70 C or 158 °F, normal operation SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 584: Protection Data Interfaces And Differential Protection Topology
3 dB/km is used for calculating light with a wavelength of λ = 820 Attenuators required Numeric opening (NA = sin φ (coupling angle) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 585 Laser Class 1 according to EN 60825–1/-2 Using glass fibre 9 µm/125 µm Reach for multimode optical fibre, an optical signal attenuation of 0.3 dB/km is used for calculating light with a wavelength of λ = 1300 Attenuators required SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 586 If protection data interface communication is used for distances of less than 50 km or 31.1 miles, the transmit output has to be reduced by a set of optical attenuators. Both attenuators can be installed on one side. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 587 512 kbit/s or 128 kbit/s or 64 kbit/s with X.21 128 kbit/s with pilot wires Max. transmission delay 0.1 ms to 30 ms Increments 0.1 ms Max. transmission delay difference 0.000 ms to 3.000 ms Increments 0.001 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 588: Differential Protection
(50 Hz / 60 Hz) 32 ms / 28 ms typical (50 Hz / 60 Hz) 38 ms / 35 ms Dropout times of the I-DIFF> stages approx. for all ends typical 35 ms to 50 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 589 Standard precision of operational measured values The standard precision of the operational measured values of the differential protection from ± 0.5% of the rated opera- tional current is ensured up to a transformer error adjustment of 2:1. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 590: Restricted Earth Fault Protection
Tripping characteristic of the restricted earth fault protection depending on the earth current ratio 3I ”/3I ' (both currents in phase + or counter-phase –); I > = setting; I = tripping current SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 591: Breaker Intertrip And Remote Tripping- Direct Local Trip
0,01 s Trip time prolongation T-ITRIP PROL BI 0,00 s to 30,00 s steps 0,01 s Expiry tolerance 1 % of setting value or 10 ms The set times are pure delay times SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 592: Distance Protection (Optional)
0.25 A to 20.00 A Earth voltage 3U > 1 V to 100 V; ∞ Increments 1 V Dropout to pickup ratio Approx. 0.95 Measuring tolerances for sinusoidal measured values ± 5 % SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 593 Increments 0.01 A for I = 5 A 0.25 A to 20.00 A The thresholds of the zone set to the highest level are relevant taking into consideration the corresponding direction Dropout/pickup ratio Approx. 1.05 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 594 20° to 60° Increments 1° ϕ Load Dropout ratio – Currents Approx. 0.95 – Impedances Approx. 1.06 Measured value correction Mutual impedance matching for parallel lines (order option) Measuring tolerances for sinusoidal measured values SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 595 If the differential protection and the distance protection operate in parallel in the protective relay, emergency operation will not be activated unless both protection functions have become ineffective. In case of measured voltage failure, e.g. voltage transformer mcb trip see Section 4.16 „Time Overcurrent Protection“ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 596: Power Swing Detection (With Impedance Pickup) (Optional)
Approx. 10 Hz Power swing blocking programs Blocking of Z1 and Z1B Blocking of Z2 and higher zones Blocking of Z1 and Z2 Block all zones Power swing trip Trip following instable power swings (out-of-step) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 597: Teleprotection For Distance Protection (Optional)
Increments 0.01 s Waiting time for transient blocking 0.00 s to 30.00 s; ∞ Increments 0.01 s Expiry tolerances 1 % of set value or 10 ms The set times are pure delay times SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 598: Earth Fault Protection In Earthed Systems (Optional)
Approx. 30 ms Tolerances Current 3 % of setting value or 1 % nominal current Time 1 % of setting value or 10 ms The set times are pure delay times with definite time protection. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 599 3 % of setting value, or 1 % nominal current Pickup time for 2 ≤ I/3I ≤ 20 and T ≥ 1 s 5 % of set value ± 15 ms 3I0P Defined times 1 % of set value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 600 3 % of set value, or 1 % nominal current Pickup time for 2 ≤ I/3I ≤ 20 and T ≥ 1 s 5 % of set value ± 15 ms 3I0P Defined times 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 601 = 1 A 0.50 A to 25.00 A Increments 0.01 A for I = 5 A 2.50 A to 125.00 A Inrush restraint may be switched effective or ineffective for each individual stage. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 602 0° to 360° Increments 1° Tolerances pickup values 10 % of set value or 5 % of nominal current or 0.5 V Tolerance forward angle 5° Re-orientation time after direction change Approx. 30 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 603 Technical Data 4.9 Earth Fault Protection in Earthed Systems (optional) Figure 4-2 Trip time characteristics of inverse time overcurrent stage, acc. IEC (phases and earth) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 604 Technical Data 4.9 Earth Fault Protection in Earthed Systems (optional) Figure 4-3 Trip time characteristics of inverse time overcurrent stage, acc. ANSI/IEEE (phases and earth) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 605 Technical Data 4.9 Earth Fault Protection in Earthed Systems (optional) Figure 4-4 Trip time characteristics of inverse time overcurrent stage, acc. ANSI/IEEE (phases and earth) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 606 = T — T ·ln(I/3I0P) 3I0Pmax 3I0P Note: For I/3I0P > 35, the time for I/3I0P = 35 applies Figure 4-6 Trip time characteristics of the zero sequence voltage protection U 0 inverse SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 607 Technical Data 4.9 Earth Fault Protection in Earthed Systems (optional) Figure 4-7 Tripping characteristics of the zero-sequence power protection This characteristic applies for: S = 10 VA and T = 0 s. 3IOPAdd.T_DELAY SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 608: Teleprotection For Earth Fault Protection (Optional)
Increments 0.01 s Wait time for transient blocking 0.00 s to 30.00 s; ∞ Increments 0.01 s Time expiry tolerances 1 % of setting value or 10 ms The set times are pure delay times SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 609: Weak Infeed Tripping (Classical/Optional)
Echo impulse duration/release prolongation 0.00 s to 30.00 s Increments 0.01 s Echo blocking duration after echo 0.00 s to 30.00 s Increments 0.01 s Pickup tolerance 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 610: Weak Infeed Tripping (French Specification/Optional)
Increments 0.01 s Delay (multi-pole) 0.00 s to 30.00 s Increments 0.01 s Time constant τ 1 s to 60 s Increments 1 s Pickup tolerance 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 611: Direct Remote Trip And Transmission Of Binary Information
18 ms for 6 ends minimum 17 ms typical 23 ms Dropout times, total approx. for 2 ends typical 24 ms for 3 ends typical 25 ms for 6 ends typical 32 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 612: Instantaneous High-Current Switch-Onto-Fault Protection (Sotf)
∞ (disabled) Dropout to pickup ratio Approx. 90 % Pickup tolerance 3 % of setting value or 1 % of I Times Shortest trip time Approx. 10 ms / 5 ms (fast relays/high-speed relays) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 613: Earth Fault Detection In A Non-Earthed System
Angle correction for toroidal current transformer 0.0° to 5.0° Increments 0.1° in 2 steps Measuring tolerance 10 % of set value for tan ϕ ≤ 20 (for real power) Sensitive earth current input independent from I SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 614: Backup Time Overcurrent Protection
Dropout times Approx. 30 ms Tolerances Currents 3 % of setting value or 1 % nominal current Times 1 % of setting value or 10 ms The set times are pure delay times SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 615 5 % of set value ± 15 ms Pickup time for 2 ≤ I/3I ≤ 20 and T ≥ 1 s 5 % of set value ± 15 ms 3I0P Defined times 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 616 Dropout times Approx. 30 ms Tolerance currents Currents 3 % of setting value or 1 % nominal current Times 1 % of setting value or 10 ms The set times are pure delay times. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 617: Automatic Reclosure Function (Optional)
30 V to 90 V (Ph-E) Increments 1 V Voltage measuring time 0.10 s to 30.00 s Increments 0.01 s Time delay for close command transmission 0.00 s to 300.00 s; ∞ Increments 0.01 s SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 618: Synchronism And Voltage Check (Optional)
15 mHz Max. angle error 5° for Δf ≤ 1 Hz 10° for Δf > 1 Hz Synchronous/asynchronous limits 0.01 Hz Circuit breaker operating time 0.01 s to 0.60 s Increments 0.01 s SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 619 Minimum time for filtering the measured values Approx. 80 ms Maximum measuring time 0.01 s to 600.00 s; ∞ Increments 0.01 s Tolerance of all timers 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 620: Undervoltage And Overvoltage Protection (Optional)
Can be switched on/off Pick-up times Approx. 35 ms Dropout time Approx. 30 ms Tolerances Voltages 3 % of setting value or 1 V Times 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 621 Can be switched on/off Pick-up times Approx. 35 ms Dropout time Approx. 30 ms Tolerances Voltages 3 % of setting value or 1 V Times 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 622 Can be switched on/off Pick-up times Approx. 35 ms Dropout time Approx. 30 ms Tolerances Voltages 3 % of setting value or 1 V Times 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 623: Frequency Protection (Optional)
Frequencies f>, f< in specific range (f ± 10 %) 15 mHz in range U : 50 V to 230 V Time delays T(f<, f>) 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 624: Fault Locator
- BCD output time 0.01 s to 180.00 s; ∞ Increments 0.01 s Output of the fault distance in km, miles, and % requires homogeneous lines or correctly configured line sections SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 625: Circuit Breaker Failure Protection
1 % of setting value or 10 ms Pole Discrepancy Supervision Initiation criterion Not all poles are closed or open Monitoring time 0.00 s to 30.00 s; ∞ Increments 0.01 s Tolerance 1 % of setting value or 10 ms SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 626: Thermal Overload Protection
2 % or 1 % of nominal current; Class 2 % according to IEC 60255-8 Referring to tripping time 3 % or 1 s for I/(k ·I ) > 1,25; class 3 acc. to IEC 60255-8 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 627 Technical Data 4.23 Thermal Overload Protection Figure 4-8 Trip time characteristics of the overload protection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 628: Monitoring Functions
Increment 0.01 A for I = 5 A 0.25 A to 10.00 A Increment 0.01 A - U1 2 V to 70 V Increment 1 V Response time Approx. 30 ms Trip circuit monitoring SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 629 With 1 binary input or with 2 binary inputs Pickup and dropout time Approx. 1 s to 2 s Settable delay time for operation with 1 binary input 1 s to 30 s Increments 1 s SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 630: User-Defined Functions (Cfc)
– – – characteristic LONG_TIMER Timer (max.1193h) LOOP Feedback Loop LOWER_SETPOINT Lower Limit – – – Multiplication MV_GET_STATUS Information status measured value, decoder MV_SET_STATUS Measured value with status, encoder NAND NAND - Gate SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 631 Maximum number of reset-resistant flipflops When the limit is exceeded, an error indica- D_FF_MEMO, RS_FF_MEMO, SR_FF_MEMO tion is output by the device. Consequently, the device is put into monitoring mode. The red ERROR-LED lights up. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 632 PLC1_BEARB (Slow PLC Processing) 1 900 PLC_BEARB (Fast PLC Processing) SFS_BEARB (switchgear interlocking) 10 000 When the sum of TICKS of all blocks exceeds the limits before-mentioned, an error message is output by CFC. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 633 LOOP Decoder DM_DECODE Dynamic OR DYN_OR Addition Subtraction Multiplication Division Square root SQUARE_ROOT Timer TIMER_SHORT Timer LONG_TIMER Blinker lamp BLINK Counter COUNTER Adaptor REAL_TO_DINT Adaptor REAL_TO_UINT Alarm clock ALARM Comparison COMPARE Decoder DIST_DECODE SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 634: Additional Functions
/Θ ; Θ /Θ ; Θ/Θ Θ TRIP TRIP TRIP TRIP related to tripping temperature rise Operational measured values for synchro check in kV primary diff in Hz; diff in ° ϕ diff SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 635 Number of automatic reclosures Separate for 1-pole and 3-pole AR; initiated by the device Separately for 1st AR cycle and for all further cyles Total of interrupted currents Pole segregated Maximum interrupted current Pole segregated SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 636 External synchronisation using SIMEAS Sync. box or Timing Master Time signal synchro-box External synchronisation with pulse via binary input or Timing Master Pulse via binary input External synchronisation using system interface (IEC 61850) Ethernet NTP SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 637: Dimensions
Technical Data 4.27 Dimensions 4.27 Dimensions 4.27.1 Panel Flush Mounting and Cubicle Mounting (Size Figure 4-9 Dimensions of a device for panel flush mounting or cubicle installation (size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 638: Panel Flush Mounting And Cubicle Mounting
Technical Data 4.27 Dimensions 4.27.2 Panel Flush Mounting and Cubicle Mounting (Size Figure 4-10 Dimensions of a device for panel flush mounting or cubicle installation (size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 639: Panel Surface Mounting (Housing Size )
Panel Surface Mounting (Housing Size Figure 4-11 Dimensions of a device for panel surface mounting (size 4.27.4 Panel Surface Mounting (Housing Size Figure 4-12 Dimensions of a device for panel surface mounting (size ■ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 640 Technical Data 4.27 Dimensions SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 641: Appendix
Ordering Information and Accessories Terminal Assignments Connection Examples Default Settings Protocol-dependent Functions Functional Scope Settings Information List Group Alarms A.10 Measured Values SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 642: Ordering Information And Accessories
, AC 115 V, binary input threshold 176 V with plug-in jumper one of the 2 voltage ranges can be selected for each binary input one of 3 pickup threshold ranges can be selected with plug-in jumper SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 643 Region: USA, 60 Hz/50 Hz, ANSI, language: American English (language can be changed) Region: World, 50 Hz/60 Hz, IEC/ANSI, language: French (language can be changed) Region: World, 50 Hz/60 Hz, IEC/ANSI, language: Spanish (language can be changed) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 644 RS485 interface and accessories as stated in Appendix A.1.2 „External converters“. Not possible for surface mounting housing (MLFB position 9 = E/G/H/Q/R). Please order the device with electrical inter- face and use a separate fibre-optic switch. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 645 FO direct connection or communication networks with IEEE C37.94 interface using multimode fibre for surface-mounting housing, delivery with external repeater This interface is not available in the surface-mounting housing (MLFB position 9 = E/G/H/Q/R). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 646 FO direct connection or communication networks with IEEE C37.94 interface using multimode fibre for surface-mounting housing, delivery with external repeater This interface is not available in the surface-mounting housing (MLFB position 9 = E/G/H/Q/R). SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 647 The single-ended fault locator is included in the standard scope of functions of all variants. Restricted earth fault protection only possible if MLFB position 7 = 1 or 5 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 648: Accessories
(order number 7XV5107–0AA00). The two attenuators must be in- stalled on one side. A device with the order variant 7XV5461–0BK00 can only cooperate with a device of the order variant 7XV5461–0BL00. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 649 6XV8100 Fibre-optic cables with different connectors, in different lengths and designs. More information will be avail- able from your local Siemens sales representative. Isolating Transformers Isolating transformers are needed on copper lines if the longitudinal voltage induced in the pilot wires can result in more than 60 % of the test voltage at the communication converter (i.e.
Page 650 Module FO30 can only be used in a flush mounting housing Terminal Block Covering Caps Terminal Block Covering Cap for Block Type Order No. 18 terminal voltage, 12 terminal current block C73334-A1-C31-1 12 terminal voltage, 8 terminal current block C73334-A1-C32-1 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 651 TEC 4 device and a PC or laptop: The PC or laptop must run MS-WINDOWS 95, MS-WINDOWS 98, MS- WINDOWS NT 4, MS-WINDOWS 2000, MS-WINDOWS ME, MS-WINDOWS XP PRO or MS-WINDOWS VISTA Name Order No. Interface cable between PC and SIPROTEC, Cable with 9-pin male/female con- nectors 7XV5100-4 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 652: Terminal Assignments
Appendix A.2 Terminal Assignments Terminal Assignments A.2.1 Panel Flush Mounting or Cubicle Mounting 7SD5***-*A/J Figure A-1 General diagram 7SD5***-*A/J (panel flush mounting or cubicle mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 653 Appendix A.2 Terminal Assignments 7SD5***-*C/L Figure A-2 General diagram 7SD5***-*C/L (panel flush mounting or cubicle mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 654 Appendix A.2 Terminal Assignments 7SD5***-*N/S Figure A-3 General diagram 7SD5***-*N/S (panel flush mounting or cubicle mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 655 Appendix A.2 Terminal Assignments 7SD5***-*D/M Figure A-4 General diagram 7SD5***-*D/M (panel flush mounting or cubicle mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 656 Appendix A.2 Terminal Assignments 7SD5***-*P/T Figure A-5 General diagram 7SD5***-*P/T (panel flush mounting or cubicle mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 657 Appendix A.2 Terminal Assignments 7SD5***-*W SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 658 Appendix A.2 Terminal Assignments Figure A-6 General diagram 7SD5*-*W (panel flush mounting and cubicle mounting, size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 659: Panel Surface Mounting
Appendix A.2 Terminal Assignments A.2.2 Panel Surface Mounting 7SD5***-*E Figure A-7 General diagram 7SD5***-*E (panel surface mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 660 Appendix A.2 Terminal Assignments 7SD5***-*E (release /CC and higher) Figure A-8 General diagram 7SD5***-*E release /CC and higher (panel surface mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 661 Appendix A.2 Terminal Assignments 7SD5***-*G Figure A-9 General diagram 7SD5***-*G (panel surface mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 662 Appendix A.2 Terminal Assignments 7SD5***-*Q Figure A-10 General diagram 7SD5***-*Q (panel surface mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 663 Appendix A.2 Terminal Assignments 7SD5***-*H Figure A-11 General diagram 7SD5***-*H (panel surface mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 664 Appendix A.2 Terminal Assignments 7SD5***-*R Figure A-12 General diagram 7SD5***-*R (panel surface mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 665 Appendix A.2 Terminal Assignments 7SD5***-*G/H/Q/R (release /CC and higher) Figure A-13 General diagram 7SD5***-*G/H/Q/R release /CC and higher (panel surface mounting; size SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 666: Connection Examples
Appendix A.3 Connection Examples Connection Examples A.3.1 Current Transformer Connection Examples Figure A-14 Current connections to three current transformers and starpoint current (normal circuit layout) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 667 0201. This also reverses the polarity of the current input IE or IEE. Therefore the con- nections of S1 and S2 must be exchanged at Q8 and Q7 when using a toroidal current transformer. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 668 Appendix A.3 Connection Examples Figure A-16 Current connections to three current transformers and earth current from the star-point connection of a parallel line (for parallel line compensation) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 669 Appendix A.3 Connection Examples Figure A-17 Current connections to three current transformers and earth current from the star-point current of an earthed power transformer (for directional earth fault protection) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 670 Appendix A.3 Connection Examples Figure A-18 Restricted earth fault protection on an earthed transformer winding Figure A-19 Restricted earth fault protection on a non-earthed transformer winding with neutral reactor SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 671: Voltage Transformer Connection Examples
Appendix A.3 Connection Examples A.3.2 Voltage Transformer Connection Examples Figure A-20 Voltage connections to three wye-connected voltage transformers (normal circuit layout) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 672 Appendix A.3 Connection Examples Figure A-21 Voltage connections to three wye-connected voltage transformers with additional open-delta windings (e–n–winding) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 673 Appendix A.3 Connection Examples Figure A-22 Voltage connections to three wye-connected voltage transformers and additionally to a busbar voltage (for overvoltage protection or synchronism check) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 674: Default Settings
LED14 Alarm Sum Event Alarm Summary Event only devices with only three-pole tripping only devices with single-pole and three-pole tripping only devices with 2 protection data interfaces only devices with automatic reclosure function SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 675: Binary Input
>BLOCK Backup OverCurrent Iep >BLOCK I-STUB 7130 >BLOCK I-STUB >BLOCK O/CIe>>> 7132 >BLOCK Backup OverCurrent Ie>>> no presetting >CB1 Ready >CB1 READY (for AR,CB-Test) >Remote CMD 1 3541 >Remote Command 1 signal input SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 676: Binary Output
Function Keys Table A-4 Applies to all devices and ordered variants Function Keys Allocated Function Display of the operational indications Display of the operational values An overview of the last 8 network faults none SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 677: Default Display
A.4 Default Settings A.4.5 Default Display 4-line Display Table A-5 This selection is available as start page which may be configured. Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 678 A message indicating the protective function that picked up last PU Time Runtime from general pickup until dropout Trip time Elapsed time from pick-up until trip command Fault location Fault distance d in km or miles SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 679 Appendix A.4 Default Settings Default Display in the Graphic Editor Figure A-23 Standard default display after starting the Display Editor - example SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 680: Pre-Defined Cfc Charts
Device and System Logic A negator block of the slow logic (PLC1-BEARB) is created from the binary input „>DataStop“ into the internal single point indication „UnblockDT“. Figure A-24 Logical Link between Input and Output SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 681: Protocol-Dependent Functions
1.5 Mbaud up to 1.5 Mbaud 2400 to 19200 Type RS232/RS485 Ethernet TP RS485 RS485 RS485 Fibre-optic cables Optical or electrical Fibre-optic Fibre-optic Fibre-optic cables cables cables Double ring Double ring SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 682: Functional Scope
TOC ANSI Sens. Earth Flt Disabled Disabled Sensitive Earth Flt.(comp/ isol. Enabled starp.) Earth Fault O/C Disabled Disabled Earth fault overcurrent TOC IEC TOC ANSI TOC Logarithm. Definite Time U0 inverse Sr inverse SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 683 IEEE C37.94 P. INTERFACE 2 Disabled Disabled Protection Interface 2 (Port E) Enabled IEEE C37.94 NUMBER OF RELAY 2 relays 2 relays Number of relays 3 relays 4 relays 5 relays 6 relays SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 684 Default Setting Comments GPS-SYNC. Enabled Disabled GPS synchronization Disabled charge I comp. Enabled Disabled charging current compensation Disabled L-sections FL 1 Section 1 Section Line sections for fault locator 2 Sections 3 Sections SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 685: Settings
P.System Data 1 0.5 .. 50.0 % 15.0 % CT Error in % at k_alf nominal ACTIVE GROUP Change Group Group A Group A Active Setting Group is Group B Group C Group D SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 686 Angle K0(Z1) P.System Data 2 -180.00 .. 180.00 ° 0.00 ° Zero seq. comp. angle for zone 1122 K0 (> Z1) P.System Data 2 0.000 .. 4.000 1.000 Zero seq.comp.factor K0,higher zones >Z1 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 687 1224 IcSTAB/IcN Diff. Prot 2.0 .. 4.0 Ic Stabilising / Ic Nominal 1233 I-DIFF>> Diff. Prot 0.8 .. 100.0 A; ∞ 1.2 A I-DIFF>>: Pickup value 4.0 .. 500.0 A; ∞ 6.0 A SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 688 (ph-e) 0.020 .. 120.000 Ω; ∞ ∞ Ω 1541 R load Dis. General 0.100 .. 600.000 Ω; ∞ R load, minimum Load Imped- ∞ Ω ance 0.020 .. 120.000 Ω; ∞ ∞ Ω SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 689 2.000 Ω 1625 T3 DELAY Dis. General 0.00 .. 30.00 sec; ∞ 0.60 sec T3 delay Dis. Quadril. Dis. MHO 1631 Op. mode Z4 Dis. Quadril. Forward Non-Directional Operating mode Z4 Reverse Non-Directional Inactive SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 690 X(Z6)- Dis. Quadril. 0.050 .. 600.000 Ω 4.000 Ω X(Z6)-, Reactance for Reverse direction 0.010 .. 120.000 Ω 0.800 Ω 1701 Op. mode Z1 Dis. MHO Forward Forward Operating mode Z1 Reverse Inactive SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 691 48 V Undervoltage (ph-e) at Iphi> 1918 Uph-ph (Iphi>) Dis. General 40 .. 130 V 80 V Undervoltage (ph-ph) at Iphi> 1919A EFFECT ϕ Dis. General forward&reverse forward&reverse Effective direction of phi-pickup Forward SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 692 5 sec Time constant Tau 2512A Rec. Ext. Weak Infeed 0.00 .. 30.00 sec 0.65 sec Reception extension 2513A T 3I0> Ext. Weak Infeed 0.00 .. 30.00 sec 0.60 sec 3I0> exceeded extension SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 693 ∞ A 2652 T 3I0p TimeDial Back-Up O/C 0.05 .. 3.00 sec; ∞ 0.50 sec T 3I0p Time Dial 2653 TimeDial TD3I0p Back-Up O/C 0.50 .. 15.00 ; ∞ 5.00 Time Dial TD 3I0p SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 694 0.00 .. 30.00 sec 3.00 sec Delay Voltage Failure Supervi- sion 2921 T mcb Measurem.Superv 0 .. 30 ms 0 ms VT mcb operating time 2931 BROKEN WIRE Measurem.Superv Fast broken current-wire supervi- sion Alarm only SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 695 Block 3I0>>> during 1pole dead No (non-dir.) time 3117 Trip 1p 3I0>>> Earth Fault O/C Single pole trip with 3I0>>> 3120 Op. mode 3I0>> Earth Fault O/C Forward Inactive Operating mode Reverse Non-Directional Inactive SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 696 Earth Fault O/C Instantaneous trip after Switch- Earth Fault O/C OnToFault Earth Fault O/C Earth Fault O/C 3150 3I0p InrushBlk Earth Fault O/C Inrush Blocking Earth Fault O/C Earth Fault O/C Earth Fault O/C SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 697 T rev. (U0inv) Earth Fault O/C 0.00 .. 32.00 sec 1.20 sec T-reverse Time delay (U0inv) 3186A 3U0< forward Earth Fault O/C 0.1 .. 10.0 V; 0 0.0 V 3U0 min for forward direction SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 698 T-MAX ADT Auto Reclose 0.50 .. 3000.00 sec 5.00 sec Maximum dead time 3435 ADT 1p allowed Auto Reclose 1pole TRIP allowed 3436 ADT CB? CLOSE Auto Reclose CB ready interrogation before re- closing SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 699 0.01 .. 1800.00 sec 1.20 sec Dead time after evolving fault 3492 4.AR: CB? CLOSE Auto Reclose CB ready interrogation before re- closing 3493 4.AR SynRequest Auto Reclose Request for synchro-check after 3pole AR SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 700 Frequency Prot. 0.00 .. 600.00 sec 3.00 sec T f3 Time Delay 3631 O/U FREQ. f4 Frequency Prot. ON: Alarm only ON: Alarm only Over/Under Frequency Protec- ON: with Trip tion stage f4 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 701 30.0 V Uph-e< Pickup 3753 T Uph-e< Voltage Prot. 0.00 .. 100.00 sec; ∞ 2.00 sec T Uph-e< Time Delay 3754 Uph-e<< Voltage Prot. 1.0 .. 100.0 V; 0 10.0 V Uph-e<< Pickup SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 702 Parallel withT1 T2 Start Criteria Parallel withT1 3921 End Flt. stage Breaker Failure End fault protection 3922 T-EndFault Breaker Failure 0.00 .. 30.00 sec; ∞ 2.00 sec Trip delay of end fault protection SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 703 Com conv 512 kB C37.94 1 slot C37.94 2 slots C37.94 4 slots C37.94 8 slots 4605A PROT 2 T-DELAY Prot. Interface 0.1 .. 30.0 ms 30.0 ms Prot 2: Maximal permissible delay time SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 704 S2: Line length P.System Data 2 0.1 .. 1000.0 km 100.0 km S2: Line length in kilometer 6024 S2: line length P.System Data 2 0.1 .. 650.0 Miles 62.1 Miles S2: line length in miles SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 705 P.System Data 2 0.000 .. 4.000 1.000 S3: Zero seq. compensating factor K0 6052 S3: angle K0 P.System Data 2 -180.00 .. 180.00 ° 0.00 ° S3: Zero seq. compensating angle of K0 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 706: Information List
(„.._Ev“). Further information on in- dications can be found in detail in the SIPROTEC 4 System Description, Order No. E50417-H1100-C151. In columns „Event Log“, „Trip Log“ and „Ground Fault Log“ the following applies: UPPER CASE NOTATION “ON/OFF”: definitely set, not allocatable...
Page 707 (E Sw Open) Interlocking: Earth switch Close Control Device IntSP (E Sw Cl.) Q2 Open/Close (Q2 Op/Cl) Control Device CF_D Q2 Open/Close (Q2 Op/Cl) Control Device Q9 Open/Close (Q9 Op/Cl) Control Device CF_D SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 708 (>Annunc. 2) >User defined annunciation 3 Device LED BI (>Annunc. 3) >User defined annunciation 4 Device LED BI (>Annunc. 4) >Test mode (>Test mode) Device LED BI >Stop data transmission Device LED BI (>DataStop) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 709 Failure: General Voltage Supervi- Measurem.Superv sion (Fail U Superv.) Failure: Voltage summation Measurem.Superv Phase-Earth (Fail Σ U Ph-E) Failure: Voltage Balance (Fail U Measurem.Superv balance) Failure: Voltage absent (Fail U Measurem.Superv absent) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 710 Set Points(MV) I1dmd> (SP. I1dmd>) Set Point |Pdmd|> (SP. |Pdmd|>) Set Points(MV) Set Point |Qdmd|> (SP. |Qdmd|>) Set Points(MV) Set Point |Sdmd|> (SP. |Sdmd|>) Set Points(MV) Power factor alarm (cosϕ alarm) Set Points(MV) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 711 >CB1 READY (for AR,CB-Test) P.System Data 2 LED BI (>CB1 Ready) >CB faulty (>CB faulty) P.System Data 2 LED BI >CB aux. contact 3pole Closed P.System Data 2 LED BI (>CB 3p Closed) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 712 P.System Data 2 PICKUP L2) Relay PICKUP Phase L3 (Relay P.System Data 2 PICKUP L3) Relay PICKUP Earth (Relay P.System Data 2 PICKUP E) Relay TRIP command Phase L1 P.System Data 2 (Relay TRIP L1) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 713 1001 Number of breaker TRIP com- Statistics mands L1 (TripNo L1=) 1002 Number of breaker TRIP com- Statistics mands L2 (TripNo L2=) 1003 Number of breaker TRIP com- Statistics mands L3 (TripNo L3=) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 714 BCD Fault location [1%] (BCD Fault Locator d[1%]) 1144 BCD Fault location [2%] (BCD Fault Locator d[2%]) 1145 BCD Fault location [4%] (BCD Fault Locator d[4%]) 1146 BCD Fault location [8%] (BCD Fault Locator d[8%]) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 715 LED BI (>EF BLOCK 3I0>>) 1308 >Earth Fault O/C Block 3I0> (>EF Earth Fault O/C LED BI BLOCK 3I0>) 1309 >Earth Fault O/C Block 3I0p (>EF Earth Fault O/C LED BI BLOCK 3I0p) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 716 (E/F L3 selec.) 1345 Earth fault protection PICKED UP Earth Fault O/C (EF Pickup) 1354 E/F 3I0>>> PICKED UP (EF Earth Fault O/C 3I0>>>Pickup) 1355 E/F 3I0>> PICKED UP (EF 3I0>> Earth Fault O/C Pickup) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 717 Teleprot. E/F signal (EF Tele BL STOP) 1390 E/F Tele.Blocking: Send signal Teleprot. E/F with jump (EF Tele BL Jump) 1401 >BF: Switch on breaker fail pro- Breaker Failure LED BI tection (>BF on) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 718 BF Pole discrepancy pickup L3 Breaker Failure on off (BF CBdiscr L3) 1500 BF Pole discrepancy Trip (BF Breaker Failure CBdiscr TRIP) 1503 >BLOCK Thermal Overload Pro- Therm. Overload LED BI tection (>BLK ThOverload) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 719 >AR: Block 2nd AR-cycle (>BLK Auto Reclose LED BI 2.AR-cycle) 2744 >AR: Block 3rd AR-cycle (>BLK Auto Reclose LED BI 3.AR-cycle) 2745 >AR: Block 4th and higher AR- Auto Reclose LED BI cycles (>BLK 4.-n. AR) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 720 (AR Tdead 3pFlt) 2844 AR 1st cycle running (AR 1stCyc. Auto Reclose run.) 2845 AR 2nd cycle running (AR Auto Reclose 2ndCyc. run.) 2846 AR 3rd cycle running (AR 3rdCyc. Auto Reclose run.) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 721 >Start synchro-check for AR Sync. Check LED BI (>Sync. Start AR) 2907 >Sync-Prog. Live bus / live line / Sync. Check LED BI Sync (>Sync. synch) 2908 >Sync-Prog. Usy1>Usy2< Sync. Check LED BI (>Usy1>Usy2<) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 722 SYNC voltage Usy2 < U> Sync. Check on off (P.3503) (SYNC Usy2<<) 2976 SYNC voltage Usy1 >Umax Sync. Check on off (P.3504) (SYNC Usy1>>) 2977 SYNC voltage Usy1 < U> Sync. Check on off (P.3503) (SYNC Usy1<<) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 723 3147 Diff: TRIP 3pole (Diff TRIP 3pole) Diff. Prot on off 3148 Diff: Differential protection is Diff. Prot blocked (Diff block) 3149 Diff: Diff. protection is switched off Diff. Prot (Diff OFF) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 724 (>PI1 light off) 3228 >Prot Int 2: Transmitter is Prot. Interface LED BI switched off (>PI2 light off) 3229 Prot Int 1: Reception of faulty data Prot. Interface (PI1 Data fault) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 725 Diff: >Commissioning state ON Diff. Prot LED BI (>Comm. Diff ON) 3261 Diff: >Commissioning state OFF Diff. Prot LED BI (>Comm. Diff OFF) 3262 Diff: Commissioning state Diff. Prot IntSP ON/OFF (Comm Diff.ONoff) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 726 Relay 2 in Login state (Rel2 Diff.-Topo Login) 3493 Relay 3 in Login state (Rel3 Diff.-Topo Login) 3494 Relay 4 in Login state (Rel4 Diff.-Topo Login) 3495 Relay 5 in Login state (Rel5 Diff.-Topo Login) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 727 (> Diff block) 3526 Differential blocking received at Diff. Prot PI1 (Diffblk.rec PI1) 3527 Differential blocking received at Diff. Prot PI2 (Diffblk.rec PI2) 3528 Differential blocking sending via Diff. Prot PI1 (Diffblk.sen PI1) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 728 LED BI (>Rem.Signal16) 3565 >Remote Signal 17 input Remote Signals LED BI (>Rem.Signal17) 3566 >Remote Signal 18 input Remote Signals LED BI (>Rem.Signal18) 3567 >Remote Signal 19 input Remote Signals LED BI (>Rem.Signal19) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 729 (Rem.Sig19recv) 3592 Remote signal 20 received Remote Signals (Rem.Sig20recv) 3593 Remote signal 21 received Remote Signals (Rem.Sig21recv) 3594 Remote signal 22 received Remote Signals (Rem.Sig22recv) 3595 Remote signal 23 received Remote Signals (Rem.Sig23recv) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 730 Distance Pickup L1E (Dis.Pickup Dis. General L1E) 3683 Distance Pickup Phase L2 (only) Dis. General (Dis.Pickup 1pL2) 3684 Distance Pickup L2E (Dis.Pickup Dis. General L2E) 3685 Distance Pickup L12 (Dis.Pickup Dis. General L12) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 731 Dis. General on off direct. (Dis.Loop L2E<->) 3715 Distance Loop L3E selected non- Dis. General on off direct. (Dis.Loop L3E<->) 3716 Distance Loop L12 selected non- Dis. General on off direct. (Dis.Loop L12<->) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 732 DistanceTime Out T3 (Dis.Time Dis. General Out T3) 3778 DistanceTime Out T4 (Dis.Time Dis. General Out T4) 3779 DistanceTime Out T5 (Dis.Time Dis. General Out T5) 3780 DistanceTime Out T1B (Dis.Tim- Dis. General eOut T1B) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 733 (>Dis.Telep. Blk) 4005 >Dist. teleprotection: Carrier Teleprot. Dist. LED BI faulty (>Dis.RecFail) 4006 >Dis.Tele. Carrier RECEPTION Teleprot. Dist. LED BI Channel 1 (>DisTel Rec.Ch1) 4007 >Dis.Tele.Carrier RECEPTION Teleprot. Dist. LED BI Channel 1,L1 (>Dis.T.RecCh1L1) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 734 (Dis.T.BL STOP) 4080 Dis. Tele.Unblocking: FAILURE Teleprot. Dist. Channel 1 (Dis.T.UB Fail1) 4081 Dis. Tele.Unblocking: FAILURE Teleprot. Dist. Channel 2 (Dis.T.UB Fail2) 4082 DisTel Blocking: carrier STOP Teleprot. Dist. signal, L1 (Dis.T.BL STOPL1) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 735 4234 Weak Infeed PICKUP L3 (W/I Weak Infeed Pickup L3) 4241 Weak Infeed General TRIP Weak Infeed command (WeakInfeed TRIP) 4242 Weak Infeed TRIP command - Weak Infeed Only L1 (Weak TRIP 1p.L1) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 736 Phase L2 (>DTT Trip L2) 4414 >Direct Transfer Trip INPUT DTT Direct Trip LED BI Phase L3 (>DTT Trip L3) 4417 >Direct Transfer Trip INPUT 3ph DTT Direct Trip LED BI L123 (>DTT Trip L123) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 737 Stage f2 (Time Out f2) 5242 Frequency protection: TimeOut Frequency Prot. Stage f3 (Time Out f3) 5243 Frequency protection: TimeOut Frequency Prot. Stage f4 (Time Out f4) 5803 >BLOCK restricted earth fault LED BI prot. (>BLOCK REF) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 738 >Backup OverCurrent Instanta- Back-Up O/C on off LED BI neousTrip (>O/C InstTRIP) 7130 >BLOCK I-STUB (>BLOCK I- Back-Up O/C LED BI STUB) 7131 >Enable I-STUB-Bus function (>I- Back-Up O/C on off LED BI STUB ENABLE) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 739 Back-Up O/C PICKUP I>>) 7192 Backup O/C Pickup I> (O/C Back-Up O/C PICKUP I>) 7193 Backup O/C Pickup Ip (O/C Back-Up O/C PICKUP Ip) 7201 O/C I-STUB Pickup (I-STUB Back-Up O/C on off PICKUP) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 740 >BLOCK U1>(>) Overvolt. (posi- Voltage Prot. LED BI tive seq.) (>U1>(>) BLK) 10205 >BLOCK U2>(>) Overvolt. (nega- Voltage Prot. LED BI tive seq.) (>U2>(>) BLK) 10206 >BLOCK Uph-e<(<) Undervolt Voltage Prot. LED BI (phase-earth) (>Uph-e<(<) BLK) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 741 10245 Uph-e> TimeOut (Uph-e> Time- Voltage Prot. Out) 10246 Uph-e>> TimeOut (Uph-e>> Tim- Voltage Prot. eOut) 10247 Uph-e>(>) TRIP command (Uph- Voltage Prot. e>(>) TRIP) 10248 Uph-e> Pickup L1 (Uph-e> PU Voltage Prot. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 742 TRIP) 10290 U2> Pickup (U2> Pickup) Voltage Prot. on off 10291 U2>> Pickup (U2>> Pickup) Voltage Prot. on off 10292 U2> TimeOut (U2> TimeOut) Voltage Prot. 10293 U2>> TimeOut (U2>> TimeOut) Voltage Prot. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 743 Uphph<< TimeOut (Uphph<< Voltage Prot. TimeOut) 10332 Uphph<(<) TRIP command (Uph- Voltage Prot. ph<(<) TRIP) 10333 Uph-ph< Pickup L1-L2 (Uphph< Voltage Prot. PU L12) 10334 Uph-ph< Pickup L2-L3 (Uphph< Voltage Prot. PU L23) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 744 E/F 3I0p is blocked (E/F 3I0p Earth Fault O/C on off BLOCK) 30053 Fault recording is running (Fault Osc. Fault Rec. rec. run.) 31000 Q0 operationcounter= (Q0 Control Device OpCnt=) 31001 Q1 operationcounter= (Q1 Control Device OpCnt=) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 745 Type Log Buffers Configurable in Matrix IEC 60870-5-103 of In- for- matio 31002 Q2 operationcounter= (Q2 Control Device OpCnt=) 31008 Q8 operationcounter= (Q8 Control Device OpCnt=) 31009 Q9 operationcounter= (Q9 Control Device OpCnt=) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 746: Group Alarms
Error Board 0 Error Offset Alarm adjustm. >FAIL:Feeder VT 3654 Dis.ErrorK0(Z1) 3655 DisErrorK0(>Z1) Fail I Superv. Failure Σi Fail I balance Fail U Superv. Fail Σ U Ph-E Fail U balance Fail U absent SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 747: Measured Values
S (apparent power) (S =) Measurement Frequency fsy2 (F-sy2 =) Measurement Frequency (difference line-bus) (F-diff=) Measurement Angle difference (ϕ-diff=) Measurement Frequency fsy1 (F-sy1 =) Measurement U1co (positive sequence, compounding) Measurement (U1co=) U0 (zero sequence) (U0 =) Measurement SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 748 U L23 Minimum (UL23Min=) Min/Max meter U L23 Maximum (UL23Max=) Min/Max meter U L31 Minimum (UL31Min=) Min/Max meter U L31 Maximum (UL31Max=) Min/Max meter U1 (positive sequence) Voltage Minimum (U1 Min/Max meter Min =) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 749 Power Factor Maximum Forward (PFmax- Min/Max meter Forw=) 1050 Power Factor Minimum Reverse (PFmin Min/Max meter Rev=) 1051 Power Factor Maximum Reverse (PFmax Min/Max meter Rev=) 1052 Active Power Demand Forward (Pdmd Demand meter Forw=) SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 750 UL1(% of Operational nominal voltage) Measure relay1 (UL1_opN=) 7770 Angle UL1_rem <-> UL1_loc (ΦU L1=) Measure relay1 7771 UL2(% of Operational nominal voltage) Measure relay1 (UL2_opN=) 7772 Angle UL2_rem <-> UL2_loc (ΦU L2=) Measure relay1 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 751 IL3(% of Operational nominal current) Measure relay4 (IL3_opN=) 7827 Angle IL3_rem <-> IL3_loc (ΦI L3=) Measure relay4 7829 UL1(% of Operational nominal voltage) Measure relay4 (UL1_opN=) 7830 Angle UL1_rem <-> UL1_loc (ΦU L1=) Measure relay4 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 752 (PI2 TD S) 7880 Measured value charging current L1 (Ic L1 =) IDiff/IRest 7881 Measured value charging current L2 (Ic L2 =) IDiff/IRest 7882 Measured value charging current L3 (Ic L3 =) IDiff/IRest SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 753 Min. Zero Sequence Voltage 3U0 (3U0min Min/Max meter 10103 Max. Zero Sequence Voltage 3U0 (3U0max Min/Max meter 30654 Idiff REF(% Operational nominal current) (Id- IDiff/IRest iffREF=) 30655 Irest REF(% Operational nominal current) (Ir- IDiff/IRest estREF=) ■ SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 754 Appendix A.10 Measured Values SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 755: Literature
Digital Distance Protection: Basics and Applications; Edition: 2. completely revised and extended version (May 14, 2008); Language: German ISBN-10: 389578320X, ISBN-13: 987-3895783203 Application Examples for SIPROTEC Protection Devices, E50001-K4451-A101-A1 Case Studies for SIPROTEC Protection Devices and Power Quality; E50001-K4452-A101-A1 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 756 Literature SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 757: Glossary
The function prevents overloading of the system when a fault arises. Combination devices Combination devices are bay devices with protection functions and a control display. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 758 In addition to a topological view, SIMATIC Manager offers you a component view. The component view does not offer any overview of the hierarchy of a project. It does, however, provide an overview of all the SIPROTEC 4 devices within a project.
Page 759 ESD protection ESD protection is the total of all the means and measures used to protect electrostatic sensitive devices. ExBPxx External bit pattern indication via an ETHERNET connection, device-specific → Bit pattern indication SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 760 During the system start-up the state of all the process inputs, of the status and of the fault image is sampled. This information is used to update the system-end process image. The current process state can also be sampled after a data loss by means of a GI. SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 761 International Electrotechnical Commission, international standardisation body IEC address Within an IEC bus a unique IEC address has to be assigned to each SIPROTEC 4 device. A total of 254 IEC addresses are available for each IEC bus. IEC communication branch Within an IEC communication branch the users communicate on the basis of the IEC60-870-5-103 protocol via an IEC bus.
Page 762 → IRC combination IRC combination Inter Relay Communication, IRC, is used for directly exchanging process information between SIPROTEC 4 devices. You require an object of type IRC combination to configure an inter relay communication. Each user of the combination and all the necessary communication parameters are defined in this object. The type and scope of the information exchanged between the users is also stored in this object.
Page 763 (energy purchase/supply, energy transportation). MLFB MLFB is the abbreviation for "MaschinenLesbare FabrikateBezeichnung" (machine-readable product designa- tion). This is the equivalent of an order number. The type and version of a SIPROTEC 4 device are coded in the order number. Modem connection This object type contains information on both partners of a modem connection, the local modem and the remote modem.
Page 764 Each object has properties. These might be general properties that are common to several objects. An object can also have specific properties. Off-line In offline mode a connection to a SIPROTEC 4 device is not required. You work with data which are stored in files. OI_F Output Indication Transient →...
Page 765 Glossary PROFIBUS address Within a PROFIBUS network a unique PROFIBUS address has to be assigned to each SIPROTEC 4 device. A total of 254 PROFIBUS addresses are available for each PROFIBUS network. Project Content-wise, a project is the image of a real power supply system. Graphically, a project is represented as a number of objects which are integrated in a hierarchical structure.
Page 766 SIPROTEC 4 variant This object type represents a variant of an object of type SIPROTEC 4 device. The device data of this variant may well differ from the device data of the original object. However, all variants derived from the original object have the same VD address as the original object.
Page 767 Users From DIGSI V4.6 onward , up to 32 compatible SIPROTEC 4 devices can communicate with one another in an Inter Relay Communication combination. The individual participating devices are called users. A VD (Virtual Device) includes all communication objects and their properties and states that are used by a communication user through services.
Page 768 Glossary SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 769: Index
Voltage connection 547 Binary Outputs 467, 573 Circuit Breaker Blocking 232, 234 Measuring the Operating Time 558 Blocking of zone Z1 130 Position Detection 447 Blocking scheme 203 Test Programs 457 Breaker intertrip SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 770 Cross polarisation 166 Charging current compensation 95, 105 CT error characteristic 51 Communication chain 95 Cubicle Mounting 523 Current transformer errors 96 Cubicle mounting 637, 638 Delay times 589 Current direction 266 Delays 104 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 771 Earth fault 269 Fast tripping zone (polygon) 152 Restraint 268 Fault direction 147 Sensitivity 268 Fault indications 460 Starpoint current Fault locating Through-fault current 268 Earth impedance ratio 49 Transformer saturation 269 Single-ended 387 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 772 High Current Switch-onto-Fault Protection 290, 612 Inverse Time Stage (Overcurrent Protection) >>, 3I >> 309 High-current stages I IEC Characteristic 615 Humidity 582 Inverse Time Stage (Time Overcurrent Protection) ANSI Characteristic 616 IRIG B 34 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 773 Permissive Overreach Transfer Trip (POTT) Operating Time of the Circuit Breaker 558 Distance Protection 194 Operational accuracy limit factor 50 Permissive Underreach Transfer Trip with Zone Accelera- Operational Indication Buffer 635 tion Z1B (PUTT) 191 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 774 Switching (interlocked/non-interlocked) 488 Reclosure Switching onto an earth fault 243 Blocking 322 Switching Statistics 635 Reclosure cycle 339 Switching Test of the Configured Operating Equipment Reference Voltages 418 Remote Commands 611 Symmetry monitoring 435 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 775 Three-phase measuring voltage failure 436 Vibration and Shock Resistance during Stationary Three-pole coupling 66 Operation 581 Time constant τ 416 Vibration and Shock Resistance during Transport 581 Time Overcurrent Protection 31, 614 Voltage Check 618 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...
Page 776 Zero sequence current 267 Zero-sequence power protection 224 Zero-sequence voltage stages for single-phase voltage 367 Zero-sequence voltage time protection 222 Zero-sequence voltage-conrolled stage with inverse characteristic 238 Zone logic 176, 178 Zone pickup 168 SIPROTEC, 7SD5, Manual C53000-G1176-C169-5, Release date 02.2011...

Siemens SIPROTEC Manual

1 Introduction

2 Functions

3 Mounting and Commissioning

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