Page 1: Table Of Contents
Preface Table of Contents Introduction SIPROTEC Design and Connection System Getting Started Distributed Busbar/ Breaker Failure Protection Configuration 7SS522 V4.6 Functions 7SS523 V3.2 7SS525 V3.2 Control During Operation Installation and Commissioning Manual Maintenance and Repair Technical Data Appendix References Index C53000-G1176-C182-1...
Page 2 ® that you care to suggest. DIGSI is a registered trademark of SIEMENS AG. Other designations in this manual may be trademarks that if used by third parties for their own pur- Subject to technical modifications. poses may violate the rights of the owner.
Page 3 Council Directive in agreement with the generic standards EN 61000-6-2 and EN 61000-6-4 (for EMC directive) and with the standard EN 60255-6 (for Low Voltage Di- rective) by Siemens AG. The device is designed and manufactured for application in industrial environment.
Page 4 Preface Additional support For any questions concerning your SIPROTEC system, please contact your Siemens representative. Training courses Individual course offers may be found in our Training Catalog, or questions can be di- rected to our training center in Nuremberg. Instructions and...
Page 5 Preface QUALIFIED PERSONNEL For the purpose of this instruction manual and product labels, a qualified person is one who is familiar with the installation, construction and operation of the equipment and the hazards involved. In addition, he or she has the following qualifications: •...
Page 6 Preface Besides these, graphical symbols are used according to IEC 60 617–12 and IEC 60 617–13 or symbols derived from these standards. The most frequent symbols are the following: Input signal of an analogue quantity OR-combination of input values AND-combination of input values Exclusive–OR gate: output is active, if only one of the inputs is active “>2“...
Page 7: Introduction
Introduction............................1 Overall Operation ........................2 Applications ..........................4 Features ..........................5 Design and Connection System....................... 13 General..........................14 Central Unit .......................... 15 2.1.1 Front View ..........................15 2.1.2 Modules and Submodules ....................16 2.1.3 Design ..........................17 2.1.3.1 Subrack ES902 C (SIPAC)....................17 2.1.3.2 Wall-mounted housing......................
Page 8: Configuration
Operation of SIPROTEC Devices from the Operator Panel ..........40 3.6.1 User Interface ........................40 3.6.2 Navigating the Operating Tree of the Display............... 40 3.6.3 Setting Addresses in the Bay Unit ..................41 3.6.4 Adjusting the Display Contrast....................42 Storage ..........................44 Configuration .............................
Page 9: Functions
Functions............................91 Busbar Protection ......................... 92 5.1.1 Mode of operation ........................ 92 5.1.1.1 Basic Principle ........................92 5.1.1.2 Algorithm with Instantaneous Values ................... 94 5.1.1.3 Separate Evaluation of Half-Cycles..................96 5.1.1.4 Evaluation of the Initial Values ..................... 99 5.1.1.5 Algorithm with Filtered Values .................... 100 5.1.1.6 Summary of the Measuring Method ...................
Page 10 End Fault Protection ......................132 5.4.1 End Fault Protection in the Feeder ..................132 5.4.2 Protection in the ”Dead Zone” of the Bus Coupler.............. 134 5.4.2.1 Circuit Breaker Closed......................134 5.4.2.2 Circuit Breaker Open ......................135 5.4.2.3 CLOSE Command of the Bus Coupler Circuit Breaker ............136 5.4.3 Setting Notes ........................
Page 11 Protection General ......................165 5.9.1 Current-Controlled TRIP Reset ..................165 5.9.2 Local Control of the Bay Unit....................165 5.9.3 Operating States "Bay Out of Service", "Maintenance Mode"..........166 5.9.4 Overcurrent-Controlled TRIP command ................167 5.9.5 Feeder-Selective Trip Release ................... 168 5.9.6 Testing the Tripping Circuits and the Circuit Breakers ............
Page 12: Control During Operation
5.16 Overcurrent Protection in the Bay Unit ................185 5.16.1 Functional Description ......................185 5.16.2 Setting Notes ........................187 5.16.3 Settings of the Bay Unit ...................... 191 5.16.4 List of Information from the Bay Unit .................. 193 5.17 User-Defined Annunciations ....................194 5.17.1 Functional Description ......................
Page 13: Installation And Commissioning
Feeder Shutdown and Commissioning................236 Maintenance Mode ......................239 Plant Visualization ......................241 Installation and Commissioning ....................245 Installation and Commissioning..................246 7.1.1 Central Unit ........................246 7.1.2 Bay Unit ..........................247 7.1.3 General Information on the 2-Bay Bus Coupler..............248 7.1.3.1 General..........................
Page 14: Maintenance And Repair
Maintenance and Repair........................281 Maintenance ........................282 Fault Analysis ........................284 8.2.1 Evaluation of Operational Events ..................284 8.2.2 Checking the Auxiliary Voltage Supply ................285 8.2.3 Checking the LEDs on the Modules ................... 285 8.2.4 Analysis of Internal Communication Failures..............287 Troubleshooting ........................
Page 15: Appendix
Appendix ............................327 Data for Selection and Ordering ..................328 A.1.1 Central Unit ........................328 A.1.2 Bay Units ..........................329 A.1.3 Accessories ........................330 Basis for Selection of the Stabilization Factor k ..............333 Connection Diagrams ......................334 Settings − Central Unit......................340 A.4.1 Settings of the ZPS Modules ....................
Page 16 7SS52 V4 Manual C53000-G1176-C182-1...
Page 17 Introduction This chapter introduces the SIPROTEC 7SS52 V4 distributed busbar and breaker fail- ure protection. An overview of the device is presented in its application, characteris- tics, and scope of functions. Overall Operation Applications Features 7SS52 V4 Manual C53000-G1176-C182-1...
Page 18 Introduction Overall Operation The SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection consists of compact bay units which are connected to the central unit by fiber-optic cables. Fig- ure 1-1, page 3 shows the basic structure of the protection system. All tasks from acquisition of the measured values up to the commands to the circuit breakers are exclusively processed in a digital manner.
Page 19 Overall Operation SBK: Protection processing Serial coupling DPR: Dual port RAM Power supply I/O CU: Input/output central unit ZPS: Central processor protection SBK: Bus master Figure 1-1 General view of the configuration of the protection system 7SS52 V4 Manual C53000-G1176-C182-1...
Page 20 Introduction Applications Application The SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection is a se- lective, reliable and fast protection for busbar short-circuits and circuit-breaker failures in medium-voltage, high-voltage and extra high-voltage switching stations. It is suita- ble for almost all busbar configurations. The busbar protection uses a phase-selective measuring principle.
Page 21 Features The overcurrent-time protection is a back-up protection function of the bay unit and in- cludes the following functions (see Chapter 5.14, page 181): • Phase-selective high-set stage (I>>) • High-set stage for the earth current (IE>>) • Phase-selective overcurrent stage with definite time or inverse time characteristic (I>...
Page 22 Introduction • Output of indications to − Control center − LEDs − Binary outputs of the central unit • Commissioning support by measuring and display functions, and output of indica- tions to a control center as well as to LEDs and outputs of the central unit. Busbar The digital busbar protection contains the following functions: protection...
Page 23 Features − TRIP repetition with following unbalancing (2-stage CBF) − Single-pole or three-pole start by external breaker failure protection and tripping via the isolator replica • Direct operation of the circuit breaker by the bay unit • Direct tripping of busbar sections via binary inputs of the central unit Figure 1-2 Pick-up characteristics of the busbar and breaker failure protection (unbalancing) Figure 1-3 Earth fault characteristic 7SS52 V4 Manual...
Page 24 Introduction Breaker failure The integrated circuit breaker failure protection (CBF) contains the following functions: protection • In case of a busbar short-circuit, a breaker failure is detected by comparison of cur- rent thresholds. • In all operating modes of the circuit breaker failure protection, a bay-selective com- mand is output by the bay units to trip the circuit breaker at the remote end (transfer trip command).
Page 25 Features End fault protection This mode detects short-circuits between the current transformers and the circuit breaker and generates the necessary commands to disconnect the faulted line. Overcurrent The overcurrent protection of the bay unit is independent of the busbar protection protection function and of the central unit.
Page 26 Introduction Fault recording During a fault event, the instantaneous values of the measured values are stored at intervals of 1 ms at 50 Hz and 0.83 ms at 60 Hz respectively in a buffer of the central unit or of the bay units. The central unit calculates from the instantaneous values the differential and restraint currents of each phase for all busbar sections and the check zone.
Page 27 Features Each bay unit 7SS525 has • 3 command relays with each 2 NO contacts • 2 command relay with 1 NO contact • 1 command relay with 1 NO contact • 1 alarm relay with 1 NC contact (device failure, not marshallable) The functional allocation of the outputs can be marshalled with the DIGSI communi- cation software.
Page 28 Introduction Event buffer in cen- The SIPROTEC 7SS52 V4 distributed busbar and circuit breaker failure protection tral unit supplies battery-buffered data for the analysis of faults as well as for operational events. Up to 200 operational events and 80 fault events with real-time information are stored in a circulating buffer in the central unit.
Page 29 Design and Connection System This chapter describes the design of the central unit and the bay units that constitute the SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection. It explains what housing versions are possible and what connection methods are used. General Central Unit Bay Unit...
Page 30 Design and Connection System General The SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection is com- prised of: • Central unit • Bay units • Data links (fiber-optic cables) Prefabricated fiber optic cables with double-end ST plug connectors are used for the data exchange.
Page 31 Central Unit Central Unit The central unit is installed in an ES902 C (SIPAC) subrack. This subrack can addi- tionally be fitted in a wall-mounted housing or in an 8MF cubicle. On account of the modular design, different variants and degrees of expansion can be coordinated with the station configuration.
Page 32 Design and Connection System Function keys: Alarm list Operational events Measured values Last fault freely parameterizable LEDs for display of process or device information. Next to the LEDs, there is a labeling strip for labeling of the function of each LED. 10 LED key for testing and resetting the LEDs 2.1.2 Modules and Submodules...
Page 33 Central Unit Fiber-optic For each ZPS-SK-module there is an electrical/optical signal converter module (LMZ, module (LMZ) with 8 optical interfaces each), fitted on the device's rear side. The receiver and trans- mitter connection points per bay unit are consecutively numbered on the central unit's rear plate.
Page 34 Design and Connection System Bay Unit The bay units are available in a 7XP20 housing for panel flush mounting and cubicle mounting, or in a housing for panel surface mounting for bay unit 7SS523. 2.2.1 Front View Figure 2-3 Front view of the bay unit 7SS523 and 7SS525 LEDs for the indication of operating states LCD for textual display of process and device information Navigation keys for moving through the operating tree...
Page 35 Bay Unit 9-pole female sub D connector for connecting a PC running DIGSI LED key for testing and resetting the LEDs and for display of operational measured values in 4-line mode 10 Freely parameterizable LEDs for display of process or device information. Next to the LEDs, there is a labeling strip for labeling of the function of each LED.
Page 36 Design and Connection System Figure 2-5 Module arrangement in the bay unit 7SS525 PFE/SVW module In the PFE/SVW module the firmware is located and processed; it also contains the power supply, the current transformers and the measured value acquisition function. AFE module The AFE module contains the alarm and trip relays.
Page 37 Bay Unit 2.2.3 Design 2.2.3.1 Panel Surface Mounting For panel surface mounting, only possible for device 7SS523, the bay units are deliv- ered in casings type 7XP2040-1. The front plate is hinged and can be pulled out with a plastic tab and swung to the left for easy servicing. All signals including the auxiliary voltage are connected to two-tier terminals.
Page 38 Design and Connection System Connection Method 2.3.1 Location of Device Connections Central unit Bild 2-6 Device connections on central unit 7SS52 V4 Manual C53000-G1176-C182-1...
Page 39 Connection Method Bay unit Panel surface mounting Figure 2-7 Device connections on bay unit 7SS523 for panel surface mounting 7SS52 V4 Manual C53000-G1176-C182-1...
Page 40 Design and Connection System 7SS523 bay unit Panel flush mount- ing or cubicle mounting Figure 2-8 Device connections on bay unit for panel flush mounting or cubicle mounting 7SS52 V4 Manual C53000-G1176-C182-1...
Page 41 Connection Method 7SS525 bay unit Panel flush mounting or cubicle mounting Figure 2-9 Device connections on bay unit 7SS525 2.3.2 Device Connections Tabelle 2-1 Overview of device connections Variant Current connections Voltage connections FO connections Central unit Screw connection Integrated for max.
Page 42 Design and Connection System 2.3.2.1 Screw-Type Terminals Connection The voltage connections of the central unit and the voltage and current connections of the bay units have screw terminals. For assignment of the terminals, please refer to the Figures A-3, page 334 and A-5, page 337 in the Appendix. Connection method Use copper conductors only! You can use solid conductors or stranded conductors with end sleeves.
Page 43 Connection Method 2.3.2.3 D-SUB Female Connectors Connectors The serial ports of the central unit and of the bay units have 9-pole D-SUB female con- nectors. The serial ports include: • the PC port at the front of the central unit and the bay unit •...
Page 44 Design and Connection System Note The bending radius of the available FO cables may not be smaller than 200 mm for outdoor cables and 80 mm for indoor cables. If you use other fiber types than those recommended above, please make sure to ob- serve the manufacturer’s specifications.
Page 45 Getting Started This chapter describes the first steps that you should take after receiving your SIPRO- TEC 7SS52 V4 system. After unpacking, please check whether the version and rated data match your require- ments. Match the rated control voltages of the system components to your station con- ditions and insert the buffer batteries.
Page 46 Getting Started Unpacking and Repacking The protection system is packaged at the factory to meet the requirements of IEC 60255-21. Unpack and pack the devices with normal care, without using force, and with appro- priate tools. Visually check the device immediately upon arrival for correct mechanical condition. Please observe the instruction leaflet and any other documentation that may be part of the delivery.
Page 47 Matching the Control Voltage for the Binary Inputs and Inserting the Buffer Battery Matching the Control Voltage for the Binary Inputs and Inserting the Buffer Battery Control voltage Warning! Only one jumper may be fitted per binary input. When delivered, the binary inputs of the EAZ and D-CPU modules in the central unit, and the EFE or EFE_10 modules in the bay units, are configured for 220 V rated con- trol voltage.
Page 48 Getting Started Figure 3-1 Location of the jumpers on the EAZ module (central unit) Table 3-1 Control voltage for the binary inputs on the EAZ (central unit) in relation to the fit- ted jumper Control voltage setting Name 24 V 60 V 110 V 220 V...
Page 49 Matching the Control Voltage for the Binary Inputs and Inserting the Buffer Battery Figure 3-2 Location of the jumpers and the buffer battery on the D-CPU module (central unit) Table 3-2 Control voltage for the binary inputs on the D-CPU module (central unit) in rela- tion to the fitted jumper Connector Binary...
Page 50 Getting Started Bay unit 7SS523 Warning! Dangerous voltages may be present inside the device! Make sure to switch the auxiliary voltage off before opening the front panel. To change the rated control voltages of the binary inputs in a bay unit: Open the front panel.
Page 51 Matching the Control Voltage for the Binary Inputs and Inserting the Buffer Battery Table 3-3 Control voltage for the binary inputs on the EFE (bay unit) in relation to the fitted jumper Control voltage setting Name 24 V 60 V 110 V 220 V BI 1...
Page 52 Getting Started Bay unit 7SS525 Warning! Dangerous voltages may be present inside the device! Make sure to switch the auxiliary voltage off before opening the front panel. To change the rated control voltages of the binary inputs in a bay unit: Open the front panel.
Page 53 Matching the Control Voltage for the Binary Inputs and Inserting the Buffer Battery Table 3-4 Control voltage for the binary inputs on the EFE_10 (bay unit) in relation to the fitted jumper Control voltage setting Name 24 V 60 V 110 V 220 V BI 1...
Page 54 Getting Started Electrical Checks Make sure that the operating conditions are compliant with VDE0100 and VDE0105 Part 1. The devices should have been in the final operating area for a minimum of two hours before the power source is first applied. This time allows the device to attain temper- ature equilibrium, and dampness and condensation to be avoided.
Page 55 Setting up the Communication between the Central Unit and the Bay Unit Setting up the Communication between the Central Unit and the Bay Unit The 7SS52 V4makes it possible to configure, parameterize and operate your station centrally from one PC connected to the central unit and running the DIGSI software. A prerequisite for this is that the central unit can communicate with the bay units.
Page 56 Getting Started Operation of SIPROTEC Devices from the Operator Panel In addition to operating your station with the DIGSI software (see Chapter 6, page 203), the 7SS52 V4 allows you to operate the central unit and the bay units 7SS523 locally from the user interface on the device.
Page 57 Operation of SIPROTEC Devices from the Operator Panel 3.6.3 Setting Addresses in the Bay Unit The central unit can only communicate with the bay units if the setting of the substation address, the feeder address and the device address in each bay unit matches the cor- responding IEC addresses in the DIGSI Manager.
Page 58 Getting Started 7200 PC/SYSTEM 7201 DEVICE ADD. INTERFACES ENTER Enter password ∂∂∂∂∂∂ ENTER Passw. accepted ENTER ENTER 7201 DEVICE ADD. CHANGE MODE Figure 3-5 Operator menu for setting the device address in the bay units To change the substation address or the feeder address from the operator panel of the bay unit, go to the parameters 7202 FEEDER ADD.
Page 59 Operation of SIPROTEC Devices from the Operator Panel Overwrite the setting using the numeric keys. A higher numeric value means a high- er contrast and thus a darker image. Confirm your change with the ENTER key. SETUP/EXTRAS 06/06 -------------------- Date/Time –>...
Page 60 Getting Started Storage If parts of the system are not used immediately, they can be stored after verification of the rated data. The following storage conditions should be observed: • SIPROTEC devices and associated assemblies should be stored in a dry and clean place, For storage of devices or related spare modules the applicable temperature range is between −25 °C and +70 °C (Chapter 9.2.16, page 316).
Page 61 Configuration This chapter describes how to use DIGSI to configure the SIPROTEC 7SS52 V4 dis- tributed busbar and breaker failure protection on your PC. First you must create central units and bay units in DIGSI Manager. Then open the central unit in the DIGSI Manager and start the DIGSI Plant Configuration. As next step you will use the DIGSI Plant Configuration to draw and parameterize a complete substation.
Page 62 Configuration Creating a Project When configuring with DIGSI you must first create a new project. To create a new project you must: Start DIGSI Manager. Open the dialog box File → New. Specify the project name and its filing location. The project window will open upon that.
Page 63 Inserting Central Unit / Bay Units Inserting Central Unit / Bay Units In the next step you will insert the central unit and the bay units into the structure of the project. To insert the central unit into the project structure you must: Open the context menu in the project window of DIGSI Manager and open the De- vice Catalog.
Page 64 Configuration To insert the bay units into the project structure you must: Switch to the directory 7SS523 in the Device Catalog and drag the object V3.2 for the version, the left mouse button depressed, to the desired position within the project structure.
Page 65 Plant Configuration Plant Configuration In the last section you have created central units and bay units in DIGSI Manager. This will be the basis for you to configure the substation in the next step. The DIGSI Plant Configuration is used for the configuration. The DIGSI Plant Configuration is a tool which enables you to compile all information items required by the central unit.
Page 66 Configuration 4.3.2 Starting the Plant Configuration To start the DIGSI Plant configuration you must: Select the central unit 7SS522 in the project window of DIGSI Manager and open the context menu via right mouse click. Apply the command Open object. The Open device dialog box opens.
Page 67 Plant Configuration Note The Plant Configuration and the Plant Visualization cannot run simultaneously. Close the Plant Visualization before you start the Plant Configuration. DIGSI Figure 4-6 Start screen of the Plant Configuration Note For a detailed instruction on how to use the DIGSI Plant Configuration, please refer to the corresponding on-line help.
Page 68 Configuration 4.3.3 Drawing Busbars Busbars can be drawn into the substation chart in vertical or horizontal direction. A busbar can also be a combination of vertical and horizontal lines. For this purpose place the starting point of the busbar you want to draw on the end point of an existing busbar.
Page 69 Plant Configuration Figure 4-7 DIGSI Plant Configuration, Drawing busbars - Example To name the busbar you must: Right-click the busbar. Click Object properties in the context menu. The dialog box Object Properties - Busbar opens. Figure 4-8 Dialog box Object Properties - Busbar Enter a busbar name of not more than 4 characters into the box Name short.
Page 70 Configuration Click Select to choose the on-line colour of the busbar. The Plant Visualization will show the attachment of the feeders and measuring systems to the corresponding busbar in the colour you specify here. Click OK to apply the settings and to close the dialog box. 4.3.4 Defining Bays Isolators, transformers and circuit breakers must be assigned to a certain bay.
Page 71 Plant Configuration Figure 4-10 DIGSI Plant Configuration, Defining bays - Example 4.3.5 Inserting Dynamic Elements Static and dynamic elements are inserted into the chart from libraries. Dynamic ele- ments such as isolators, circuit breakers and transformers usually have several pos- sible states.
Page 72 Configuration Note A bay (feeder bay or bus coupler) must comprise at least one isolator, one current transformer an exactly one circuit breaker. Figure 4-11 DIGSI Plant Configuration - Inserting dynamic elements - Example Isolators, transformers and circuit breakers have properties whose values must be set individually.
Page 73 Plant Configuration 4.3.6 Connecting Dynamic Elements to the Busbars Dynamic elements can be connected to busbars via lines. 4.3.6.1 Inserting Lines Lines can connect elements such as isolators, transformers, circuit breakers and lines with each other and to a busbar. Lines can be drawn into the substation chart in verti- cal or horizontal direction.
Page 74 Configuration 4.3.6.2 Inserting a Connection Lines or busbars that cross in the chart are not yet connected electrically. To this end you must insert an additional connection in the junction point. Such a connection is in- dicated by a small square. By manually adding a connection each line is separated into two autonomous lines.
Page 75 Plant Configuration 4.3.7 Inserting Static Text You can use static text to give additional short information within the chart. A static text may be composed of not more than twenty characters. To insert static text you must: Click Tools→Insert Text. Alternatively, you can click the button on the chart toolbar.
Page 76 Configuration To save elements as Typical you must: Select all elements in the chart you wish to save together as Typical. Click Edit →Save Graphic/Typical as on the menu bar. The Save as dialog box opens. Enter a name for the Typical file. A Typical file has the extension .sst. Select the location where you want to save the Typical file.
Page 77 Assigning Bay Units Assigning Bay Units In the previous step you have drawn and parameterized your entire substation with the DIGSI Plant Configuration. Thus you have also configured bay units. Subsequently you must assign these bay units to the bay units in the Device Manager (see Chapter 4.2, page 47).
Page 78 Configuration from the drop-down list. Bay units that are already assigned will not appear in the drop-down list. If there are not enough bay units available, you must create new ones in the device manager (see Chapter 4.2, page 47). Note You can print the assignment of the bay units via the menu File →Print.
Page 79 Marshalling Marshalling In the previous step you have assigned the configured bay units to the bay units cre- ated in the Device Manager. Next you will allocate information items to the input and output components of 7SS52 V4 such as binary inputs and binary outputs or LEDs. Information items can be indi- cations, commands, measured values and metered values.
Page 80 Configuration 4.5.1.2 Marshalling To marshal information items of the central unit via the Configuration Matrix you must: Note Bay units can only be allocated if they have been “instanciated” by the assignment of library elements (see Chapter 4.3.5, page 55) and by saving the substation chart Chapter 4.3.9, page 60.
Page 81 Marshalling Changing Alloca- Right-click the cell containing a tag (flag). The context menu shows you all tags with tions their meaning which are possible for this combination of the information with the source or the destination. You will always be offered the tag _ (not configured). Click this entry in the context menu.
Page 82 Configuration 4.5.2 Marshalling Bay Unit Information 4.5.2.1 Allocable Information The bay unit 7SS523 features 20 binary inputs which are designated BINARY INPUT Binary inputs 1 to BINARY INPUT 20, bay unit 7SS525 features 10 binary inputs. The binary inputs are marshalled in the address block 6100/BU. It can be selected for each binary input function whether it is to operate as make circuit or as break circuit.
Page 83 Marshalling The allocable signalling functions can be looked up in Chapter A.10, page 372 and match the signal relay functions. Trip relay The bay unit features 5 trip relays which are labelled TRIP RELAY 1 to 5. Several functions can be marshalled to each trip relay. Also each logic function can be allocated to several trip relays.
Page 84 Configuration Figure 4-19 Marshalling the bay units - the dialog box Marshalling - Now select the name of the component to which you want to allocate one or several indications. Subsequently click Configure..A third dialog box opens. It gives an overview of how many indications of the selected component can basically be allo- cated and which indications are already marshalled.
Page 85 Marshalling Figure 4-21 Marshalling the bay units - dialog box 6101 Binary input 1 In the selection box select the display text of the messages you wish to assign to the selected component. If this component is a binary input or an LED, you must select an additional indication from the drop-down list box.
Page 86 Configuration Settings After you have used the Configuration Matrix to assign sources and destinations to the information items, you can configure the settings. For detailed information on how to parameterize SIPROTEC 4 devices, please read the SIPROTEC System Description, /1/. The settings of certain functions (see Chapter 5.10, page 174 and following sections) can only be configured for the bay units (PC linked to central unit or bay unit).
Page 87 Settings 4.6.1 Serial Ports The central unit of 7SS52 V4 features one or more serial ports: one operating interface integrated in the front panel, also called PC port, and one rear service port and system port for connection to a control center. Communication via this port is subject to certain agreements concerning the device identification, the transmission format and the transmission rate.
Page 88 Configuration Figure 4-23 DIGSI, setting options of the service port − Example Within an IEC bus, a unique IEC address must be assigned to each SIPROTEC 4 de- vice. A total of 254 IEC addresses are available for each IEC bus. Enter the IEC link address of this device into the Address box.
Page 89 Settings Figure 4-24 Settings for a fibre optic interface Retrieving and The most important port settings can be read out and some of them also modified via modifying the port the operator panel of the actual device. You can access the screen for setting the ports settings via the op- from the MAIN MENU via Parameter →...
Page 90 Configuration PC Port 01/02 --------------------- IEC 60870–5–103 >IEC60870–5–103 –> ------------------- >Phys.Address >Baudrate 9600 bauds Parity Gaps 0.0s OFF-Sig. Light OFF Figure 4-26 Reading out the setting values of the IEC 60870 port in the operator panel of the device. Bay units To enable correct communication of the PC and the bay units via the system port, some interface settings may have to be verified or changed.
Page 91 Settings 4.6.2 Date/Clock Management The integrated date/clock management enables the exact timely assignment of events e.g., those in the operational annunciations and fault annunciations or in the lists of the minimum/maximum values. The time can be influenced by • the internal clock RTC (Real Time Clock), •...
Page 92 Configuration Figure 4-28 Time Synchronization & Time Format dialog box in DIGSI − Example Specify here the factors for influencing the internal clock management. You can choose between the following operating modes: Table 4-1 Operating modes of the clock management Operating mode Comments Internal Clock...
Page 93 Settings For the time signal IRIG B the year must be set manually as this standard does not include a year number. Note If you have by mistake entered a year smaller than “1991” for IRIG B, the year will be set to “1991”...
Page 94 Configuration Time format Either the European time format (DD.MM.YYYY) or the US format (MM/DD/YYYY) can be specified for the device display. 7SS52 V4 Manual C53000-G1176-C182-1...
Page 95 Concluding the Configuration Concluding the Configuration Conclude the configuration by using a report to verify the allocation of the parameters and transmit the parameters to the central unit or to the bay units. To view a report when exiting the Plant Configuration you must: Click Options →...
Page 96 Configuration Allocation of isola- The evaluation protocol (report) shows the allocation of isolators as a coded value. The explanation is given in Table 4-2, page 80 Table 4-2 Allocation of isolator Value Allocation of isolator isolator not existent 100...1200 BB isolator or "sect. isolator left side" on BB01...BB12 5100...6200 BB isolator or "sect.
Page 97 Configuration Notes Configuration Notes The 7SS52 V4 can be applied for the protection of busbar configurations with quintu- ple busbars as a maximum and up to 48 feeders. • When configuring the up to 12 bus zones (including up to 4 transfer bus zones) and 12 bus coupler zones, the individual bus zones (BB01 to BB12) or bus coupler zones (TB01 to TB12) are numbered from left to right and from the top to the bottom starting from the first main busbar to the transfer busbar or fourth main busbar.
Page 98 Configuration 1a) inside current transformer (referred to Q7), in the direction of the busbar (referred to Q0) 1b) inside current transformer (referred to Q7), in the direction of the line (referred to Q0) 2) line inside current transformer (referred to Q7) Figure 4-31 Triple busbar with transfer busbar 7SS52 V4 Manual C53000-G1176-C182-1...
Page 99 Configuration Notes Table 4-3 Configuration for a triple busbar with transfer busbar Bay: Bay: Type ISO.1:Axx ISO.2:Axx ISO.3:Axx ISO.4:Axx ISO.5:Axx CT LOC (XX) Feeder bay outgoing 1a) Bus side t. isolator 1b) Bus side t. line 2) line side 2-bay cou- not existent not existent Bus side t.
Page 100 Configuration Figure 4-32 Double busbar with combi-bus 7SS52 V4 Manual C53000-G1176-C182-1...
Page 101 Configuration Notes Table 4-4 Configuration of a double busbar with combi-bus Bay: Bay Type ISO.1:Axx ISO.2:Axx ISO.3:Axx ISO.4:Axx ISO.5:Axx CT LOC (xx) 1-bay cou- CL-BZ1 CR-BZ4 not existent not existent not existent Bus side t. line pler Feeder bay not existent BZ4 not existent line side Feeder bay not existent BZ4...
Page 102 Configuration Bay types The DIGSI Plant Configuration automatically configures bays as 1-bay bus couplers, 2-bay bus coupler, feeder bays or sectionalizing isolators. Reserve bays Reserve bays may be provided for in the configuration; they may be assigned any number that corresponds to their actual location. DIGSI configures the corresponding bay to not existent, if it has been drawn in the Plant Configuration but is not assigned in the "Bay unit allocation".
Page 103 Configuration Notes CT location The DIGSI Plant Configuration evaluates the CT location for the end fault protection and for stations with transfer busbars. The settings mean in this context: • busside towards busbar means that the transformer is located between the circuit breaker and the busbar isolator (Figure 4-31, page 82, 1a) •...
Page 104 Configuration Figure 4-34 Object properties of the transformer T1 from the example given in Figure 4-33, page 87 Figure 4-35 Example for the configuration of a 2-bay coupler with two CTs Bay unit BU 1 E02a BU 2 E02b BU 3 BU 4 BU 5 Please note the crosswise assignment of the transformers.
Page 105 Configuration Notes Figure 4-36 Object properties of the transformer from the example given in Figure 4-35, page 7SS52 V4 Manual C53000-G1176-C182-1...
Page 106 Configuration 7SS52 V4 Manual C53000-G1176-C182-1...
Page 107 Functions This chapter explains the various functions of the SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection. It shows the setting possibilities for each func- tion in maximum configuration. It also gives information and - where required - formu- lae for determination of the setting values.
Page 108: Busbar Protection
Functions Busbar Protection The busbar protection represents the main function of the 7SS52 V4. It is character- ized by a high measurement accuracy and flexible matching to the existing station configurations. It is supplemented by a series of ancillary functions. The measurement methods described here below apply for the bus zone-selective protection as well as for the check zone.
Page 109 Busbar Protection the protection system, since their secondary circuits are isolated from the high-voltage system and their shielding windings are earthed. The current transformers are an essential part of the whole protection. Their charac- teristics are an important factor for the correct operation of the protection. Their phys- ical locations mark the limits of the protection zone covered by the protection system.
Page 110 Functions The measuring circuit of the 7SS52 V4 is characterized by the following features: • Basic principle: Monitoring the sum of the currents as the tripping quantity • Measures taken to guard against the disturbing influences due to current-transform- er saturation: −...
Page 111 Busbar Protection Figure 5-3 Standard characteristic The vectorial sum I as the tripping quantity = | I ... + I is counterbalanced by the restraining quantity I = | I | + | I | ... + | I which is the arithmetic sum of the magnitudes of each current. The criterion for a short-circuit on the busbar is thus: >...
Page 112 Functions Earth fault charac- For the detection of high-resistance earth faults, tripping characteristics with increased teristic sensitivity are provided for the selective protection zones, the check zone and circuit breaker failure. These more sensitive characteristics have their own parameters. The stabilizing factor is identical with the normal load line.
Page 113 Busbar Protection the current above the axis to an extent that the current/time area is equal to that of the preceding half-cycle below the axis. Figure 5-5, page 98 b) illustrates the formation of the measured value according to the measurement algorithm employed assuming that the current flows into an external short-circuit beyond the protected zone.
Page 114 Functions Figure 5-5 CT currents and measured values in the event of an initially fully offset fault cur- rent; DC component decaying with τ = 64 ms 7SS52 V4 Manual C53000-G1176-C182-1...
Page 115 Busbar Protection A sophisticated combination of the above two distinguishing features stabilizes the op- erating characteristics of the SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection even under extremely difficult conditions, namely: • high degree of stability even during current transformer saturation •...
Page 116 Functions 5.1.1.5 Algorithm with Filtered Values The protection logic eliminates any DC components in the differential current by cal- culating its fundamental wave. This increases the accuracy in the case of relatively small, offset differential currents and reduces the protection tripping times. The value of the differential current fundamental wave is determined by means of sine and cosine filters.
Page 117 Busbar Protection Figure 5-7 TRIP following 2-out-of-2 evaluation Figure 5-8 TRIP due to filtered value 5.1.2 Isolator Replica The allocation of the feeders to the bus zones is automatically determined by the po- sition of the isolators. Only the OPEN position is evaluated for the allocation of the feeders to the busbars. Therefore, no special demands such as adjustment are made on the isolator auxiliary contacts.
Page 118 Functions Figure 5-9, page 102 shows the basic connection scheme. Figure 5-9 Isolator status indication The isolator states of each feeder are indicated in the bay units 7SS523 by red or green LEDs. The preselection can be seen in Table A-29, page 390. The isolator replica of the entire plant can be visualized in graphic form using the DIGSI Plant Visualization.
Page 119 Busbar Protection 5.1.3 Bus Coupler Variants Most large busbar configurations are divided into different zones which constitute au- tonomous subsystems− called zones or measuring systems − that can be selectively protected. The subsystems are connected by bus couplers so that the configuration can assume all required operating states.
Page 120 Functions 5.1.3.3 Bus Couplers without Circuit Breaker For cost reasons, bus zones are sometimes not connected by circuit breakers but by switch-isolators (Figure 5-11, page 103), in case of auxiliary busbars for bypass oper- ation. In order to determine nevertheless the affected zone in case of fault, the current is measured at the coupling point.
Page 121 Busbar Protection The protected zone ends at the current transformer. All electrical elements including the isolators Q1 and Q2 are part of the line. Configuration note: The dotted part must not be displayed with Digsi! 5.1.3.6 Transfer Busbars During transfer operation, the line isolator in the feeder which is located on the bypass busbar is replaced by the line isolator of the bus coupler.
Page 122 Functions Meas. system Check zone Bay/ Line side Feeder, — Feeder bus coup. coupler Bus side Feeder, — Feeder bus coup. coupler Meas. system Check zone Bay/ Line side Feeder — connected Feeder to BZA Bus side Feeder, — Feeder, bus coup.
Page 123 Busbar Protection 5.1.3.7 Transfer Busbar Protection With Inside Transformers If the protection of the transfer busbar is impossible because of internal transformers or not required for outside transformers, PROT TR BUS (5401/CU) is to be configured with No. Then, only the Q7 on the bus coupler side is required to start the transfer op- eration.
Page 124 Functions scc max The saturation current I can be calculated from the rated current I and the ef- fective factor of the symmetrical rated short-circuit current K' (which used to be called operational overcurrent factor n') * K' = primary rated current The factor K' can be calculated from the data and the actual burden of the current transformers:...
Page 125 Busbar Protection The parameter Id> BZ - EF (6109A/CU) is used to set the diff-current threshold I Id> BZ - EF for the bus zone-selective protection in the presence of a 1-pole earth fault. This parameter is only displayed if the parameter EF charact. (6320A/CU) is re- leased.
Page 126 Functions Siemens recommends to set the parameter Id> CZ - EF (6111A/CU) to 70% of the smallest 1-pole earth fault current to be expected. The parameter Is< CZ - EF (6110A/CU) is used to set the stabilizing current thresh- Is< CZ - EF old I for the check zone measuring system in the presence of a 1-pole earth fault.
Page 127: Check Zone
Check Zone Check Zone 5.2.1 Mode of operation The measuring system for the check zone detects a short-circuit in all bays, regardless of the isolator status. In some special cases, isolator status must however be considered for the check zone. If the stabilizing current is calculated in the same manner as for the bus zone-specific busbar protection, overstabilization results in multiple busbar systems.
Page 128 Functions Due to the phase angle differences between short-circuit current and load currents dif- ferences may occur in the formation of the sums. 5.2.2 Setting Notes The check zone has its own characteristics, which can be set with the parameters STAB FAC:CZ (6103/CU), Id>...
Page 129: Circuit Breaker Failure Protection
Circuit Breaker Failure Protection Circuit Breaker Failure Protection The circuit breaker failure protection (CBF) function in the SIPROTEC 7SS52 V4 dis- tributed busbar and breaker failure protection detects a failure of the circuit breaker either in the event of a feeder short-circuit or a busbar short-circuit. •...
Page 130 The parameter I> BF (118/CU) is used to set the threshold I at which the protection detects a breaker failure and/or resets a TRIP command. Siemens recommends to set this parameter to about 50 % of the smallest short-circuit current to be expected. Note Please note that the limit value I>...
Page 131 Circuit Breaker Failure Protection The parameter Is< BF - EF (6202A/CU) is used to set the stabilizing current thresh- Is< BF - EF old I for the selective busbar protection and the check zone in the presence of a 1-pole earth fault. The setting of the parameter depends on the maximum stabilizing current to be ex- pected and on the behaviour of the CTs.
Page 132 Functions 5.3.5 Bay-Specific Functions (BU) All parameters of the breaker failure protection function can be set separately for each feeder. Thus the function can be matched to different types of bays (e.g. line, trans- former) or short-circuit conditions (e.g. low-current faults). 5.3.5.1 Triggering and Releasing the Breaker Failure Protection The parameter BF BI MODE (XX14/CU) is used to specify whether the breaker failure...
Page 133 Circuit Breaker Failure Protection Figure 5-18 Triggering and releasing the breaker failure protection - 1-pole Figure 5-19 Monitoring the breaker failure protection triggering and release - 3-pole 7SS52 V4 Manual C53000-G1176-C182-1...
Page 134 Functions 5.3.5.2 Circuit Breaker Failure Protection during a Feeder Short-Circuit In the event of a breaker failure following a feeder short-circuit, the fault current must be interrupted by isolating the bus zone to which the affected feeder is allocated. The breaker failure protection of the SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection is triggered by the TRIP command from the feeder protection.
Page 135 Circuit Breaker Failure Protection Figure 5-20 Triggering by binary inputs Figure 5-21 Logic of the current check of the breaker failure protection 7SS52 V4 Manual C53000-G1176-C182-1...
Page 136 Functions Continuation for (1) and (2) see Figure 5-45, page 199 Continuation for (3) and (4) see Figure 5-25, page 124 Figure 5-22 Breaker failure protection logic - operating modes 7SS52 V4 Manual C53000-G1176-C182-1...
Page 137 Circuit Breaker Failure Protection I>query The circuit breaker failure protection (CBF) function is initiated by the TRIP command from the feeder protection. If the operating mode I>query is set with the parameter BF OP MODE (XX15/CU), the feeder current is monitored for exceeding the threshold set with the parameter I>...
Page 138 Functions Figure 5-23 Principle of unbalancing for the circuit breaker failure protection The BZ unbalance mode has two separate parameter sets, one for 1-pole earth faults and the other for multi-pole faults. The sensitive earth fault characteristic is re- leased by a binary input in the central unit. Figure 5-16, page 113 shows the charac- teristics and the settings.
Page 139 Circuit Breaker Failure Protection The low-current mode BF I< (XX16/CU) ensures that circuit breaker failure protec- tion is provided nevertheless. After a set time T-BF I< (XX22/CU) has elapsed, and if the circuit breaker is closed, a busbar TRIP command for the affected bus zone is issued.
Page 140 Functions The pulse mode is reserved for special applications. This operating mode may be used if initiation of the CBF cannot be given by the corresponding feeder protection (e.g. delayed fault recognition; feeder protection inoperative). In these specific cases the CBF can be initiated by the protection at the remote end via a binary input ">CBF puls"...
Page 141 Circuit Breaker Failure Protection Figure 5-26 Circuit breaker failure protection for busbar faults 5.3.5.4 Failure of the Bus Coupler Circuit Breaker If a busbar short-circuit occurs with the bus coupler closed (Figure 5-27, page 125), a TRIP command is issued to all related feeders of this zone and to the coupling bay units.
Page 142 With setting 2-ch w sup, the breaker failure protection will be initiated after evalua- tion of an additional binary input ("CBF release"), with time supervision. For testing purposes, Siemens recommends to set this parameter to 1-ch w/o sup or 2-ch w/o sup.
Page 143 Circuit Breaker Failure Protection The parameter BF I< (XX16/CU) is used to activate and deactivate the low-current BF I< mode. With setting ON the low-current mode is activated. With setting OFF the low-current mode is deactivated. The low-current mode can be used together with the following settings: •...
Page 144 Functions The parameter T-BF I< (XX22/CU) is used to delay for the "low-current" mode the T-BF I< TRIP command and the transfer trip signal issued by the breaker failure protection. The parameter T-BF IMP (XX23A/CU) is used to delay for pulse mode the TRIP com- T-BF IMP mand and the transfer trip signal issued by the breaker failure protection.
Page 145 Circuit Breaker Failure Protection 5.3.7 Settings for the Central Unit Addr. Setting Title Setting Options Default Setting Comments BF BI MODE 1-ch w/o sup 1-ch w sup Binary input mode / supervision 1-ch w sup 2-ch w/o sup 2-ch w sup BF OP MODE non existent BZ unbalance...
Page 146 Functions 5.3.8 List of Information from the Central Unit $00, .., $03 are variables which will be automatically replaced by $00 Number of the bay unit $01 Bay name $02 Name of the switching element (e.g. isolator or circuit breaker) $03 Name of the bus zone FNo.
Page 147 Circuit Breaker Failure Protection 5.3.9 List of Information from the Bay Unit FNo. Alarm Comments 7611 >CBF L1 >Circuit breaker failure start phase L1 7612 >CBF L2 >Circuit breaker failure start phase L2 7613 >CBF L3 >Circuit breaker failure start phase L3 7614 >CBF puls >Circuit breaker failure pulse...
Page 148: End Fault Protection
Functions End Fault Protection The function of the end fault protection is to protect the zone between the current transformer and the circuit breaker when the circuit breaker is open. 5.4.1 End Fault Protection in the Feeder Bus-side With bus-side current transformers (Figure 5-28, page 133, 1a) the zone protected by current transform- the busbar protection is normally delimited by the location of the current transformer.
Page 149 End Fault Protection CT location: 1a) inside (relating to Q7) current transformers, busbar side (relating to Q0 1b) inside (relating to Q7) current transformers, line side (relating to Q0) 2) line-side current transformers (relating to Q7) Figure 5-28 Possible CT locations Figure 5-29 End fault protection 7SS52 V4 Manual C53000-G1176-C182-1...
Page 150 Functions 5.4.2 Protection in the ”Dead Zone” of the Bus Coupler In the SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection one bus coupler can be assigned either one (1-bay coupler) or two (2-bay coupler) bay units. This is mainly determined by the number of current transformers contained in the cou- pler, although in special cases bus couplers with only one current transformer can be allocated two bay units as well, e.g.
Page 151 End Fault Protection Tabelle 5-1 Allocation of bus coupler currents to measuring systems Meas. system Reaction BZ A BZ B Current allocation until BZ A trip expiry of T-BF BZ B stable Current allocation after = 0) BZ A healthy delay time T-BF or after BZ A trip by detection of ”CB TRIP”...
Page 152 Functions Figure 5-33 Bus coupler with 2 CTs (overlapping measurement) In this case, bus zone BZB is correctly tripped and bus zone BZA remains in service. Delayed When after a bus fault the circuit breaker reaches its final position and the secondary recognition CT currents decay, the breaker failure protection may be undercut.
Page 153 This delay time must be set higher than the sum of delay times set with the parameters T-TRIP repeat (XX25/CU) aund Tmin TRIP (6106/CU) for 2-stage CBF. Siemens recommends to set this parameter to twice the circuit breaker trip time. The parameter T-BF-mP (XX21/CU) is used to delay for multipole faults the TRIP T-BF-mP command and the transfer trip signal issued by the breaker failure protection.
Page 154 Functions 5.4.5 List of Information from the Central Unit FNo. Alarm Comments 10477 CZ release Check zone released 10478 >EF charact. >Earth fault characteristic active 5.4.6 List of Information from the Bay Unit FNo. Alarm Comments 7617 >CB OFF >Circuit breaker open 7618 >CB man.close >Circuit breaker manual close...
Page 155: Supervisory Functions
Supervisory Functions Supervisory Functions The 7SS52 V4 protection system incorporates comprehensive self-monitoring func- tions which cover both the hardware and the software. This guarantees a high availa- bility and security against overfunctioning and underfunctioning as well as low demand on maintenance. 5.5.1 Functional Description The entire protection system is cyclically monitored from the measuring inputs through...
Page 156 Functions Bay unit failure All serial links between the bay unit and the central unit are continuously monitored in the central unit. A failure or disturbance of an operating bay unit leads to the output of an alarm but not to a system reset. The same is true for a failure or disturbance of the link between bay unit and central unit.
Page 157 Supervisory Functions 5.5.1.2 Auxiliary and Reference Voltages The bay unit processor monitors the reference voltages of the measured value detec- tion, as well as the supply voltages. The protection is suspended if the voltages devi- ate outside an allowable range; depending on the setting of the parameter BLOCKING MODE (6305/CU), the blocking is selective or complete;...
Page 158 Functions Figure 5-36 Characteristic for measured value monitoring Memory supervi- The memory modules of the central unit and the bay units are periodically tested for sion faults. • A checksum is formed for the program memory (Flash EPROM) during startup and cyclically during operation.
Page 159 Supervisory Functions 5.5.1.7 Cyclic Test Central unit The ”cyclic test” as part of the self-diagnosis checks cyclically all measuring systems and connected bay units from the digitized measured values up to the trip relays. As this test is treated like a real fault and uses the same transmission links for measured values and TRIP commands, it yields utmost security and reliability.
Page 160 Functions • Group alarms (selective): “Id-sup BZ M“ (FNo. 10415/CU), “Id-sup BZ L1 M“ (FNo. 10416/CU), “Id-sup BZ L2 M“ (FNo. 10417/CU), “Id-sup BZ L3 M“ (FNo. 10418/CU), “Id-sup $03 M” (FNo. 177.1331/CU) • Group alarms (check zone): ”Id-sup CZ M” (FNo. 10410/CU), •...
Page 161 Supervisory Functions 5.5.1.9 Isolator Status Supervision Preferential treat- If two busbars are solidly linked via the isolators of one feeder, all feeders which are ment for busbar connected to the linked busbars are allocated to a preferred busbar protection meas- coupling uring system.
Page 162 Functions Tabelle 5-2 Isolator status indications Isolator status indication Meaning Reaction Alarm CLOSED OPEN Isolator CLOSED Isolator CLOSED Alarm "CLOSED" (FNo. 176.1110/CU) *) Isolator OPEN Isolator OPEN Alarm "OPEN" (FNo 176.1110/CU) *) Alarm "Isol flt alarm" Isolator status not new isolator status accord- ing to setting 6304/CU (FNo.
Page 163 Supervisory Functions The following applies for the isolator position: A blocking is only carried out if the bay is assigned to a busbar because of the intermediate position, i.e. the isolator is “CLOSED“. An alarm is generated, e.g. "$01 $02" (FNo. 176.1110/CU - 176.1113/CU). a) 1-1 Position t = 500 ms 6304/CU is effective During the delay time t...
Page 164 Functions 5.5.1.10 Supervisory of Circuit Breaker Interrogation of the feeder circuit breaker is required for the end fault protection func- tion (Chapter 5.4, page 132) and for low-current circuit breaker failure protection mode (Chapter 5.3.5.2, page 118). Three circuit breaker signals can be recognized: •...
Page 165 Supervisory Functions Tabelle 5-3 Alarms related to the circuit breaker status Binary input Status of the Alarm circuit breaker CB CLOSE OPEN CLOSED command “CB fault $01” Failure (FNo. 176.1136/CU) Closed Closed “CB fault $01” Closed (FNo. 176.1136/CU) by CLOSE command Open Open “CB fault $01”...
Page 166 Functions Monitoring Possible cause and response Permanent monitoring of the program flow After three unsuccessful restart attempts the by means of watchdog (BU, CU) protection is blocked. Differential current supervision Current transformer circuit faulty • Bus zone-selective protection Bus zone-selective blocking if the parameterDIF SUP mode BZ (6310/ | Σ...
Page 167 Supervisory Functions Monitoring Possible cause and response Battery monitoring of central units and bay Alarm is generated for the bay unit with "BattSuperv $00" (FNo. 176.1174/CU) units and for the central unit with "Batt. superv CU" (FNo. 10422/CU) and group alarm "Err PROT ACTIVE" (FNo.
Page 168 Functions 5.5.2 Setting Notes The parameter BLOCKING MODE (6305/CU) is used to select the blocking mode of BLOCKING MODE the busbar and breaker failure protection in the event of • Measured value errors • Failure of a bay unit • Isolator malfunctions (6302/CU) With setting zone/phase 3-pole or 1-pole blocking is only performed on the protec- tion zone allocated to the bay unit.
Page 169 Supervisory Functions The parameter DIF SUP mode CZ (6311/CU) is used to set the response of the pro- DIF SUP mode CZ tection after pickup of the differential current supervision. With setting alarm only a pickup of the differential current supervision causes only an alarm and not a blocking of the protection.
Page 170 Functions The parameter ISOL ST 1/1 (6304/CU) is used to choose the isolator status which ISOL ST 1/1 will be assumed if the checkback signal is not plausible (at the same time OPEN and CLOSED). With setting OLD the old status will be assumed. With setting ON the isolator will be assumed to be CLOSED.
Page 171 Supervisory Functions 5.5.3 Settings for the Central Unit Addr. Setting Title Setting Options Default Setting Comments out of service Bay status in service Bay status in service maintenance T-BF rel sup 0.02 .. 15.00 sec 15.00 sec Supervision bin. input BF-release T-BF 2chan 0.06 ..
Page 172 Functions 5.5.4 List of Information from the Central Unit FNo. Alarm Comments 10410 Id-sup CZ Diff-current superv. CZ (group alarm) 10411 Id-sup CZ L1 Diff-current supervision Check Zone L1 10412 Id-sup CZ L2 Diff-current supervision Check Zone L2 10413 Id-sup CZ L3 Diff-current supervision Check Zone L3 10415 Id-sup BZ...
Page 173 Supervisory Functions FNo. Alarm Comments 176.1127 FltR $01 $02 Fault: run time $01 isolator $02 176.1128 FltP $01 $02 Fault: dist. position $01 isolator $02 176.1133 FltP $01 $02 Fault: dist. position $01 isolator $02 176.1171 15V-superv $00 15V supply supervision $00 176.1172 5V-superv $00 5V supply supervision $00 176.1173 0V-superv $00...
Page 174: Oscillographic Fault Recording
Functions Oscillographic Fault Recording 5.6.1 Mode of operation Note A description of the bay unit's fault recording function is provided in Chapter 5.13, page 179. Reading out of oscillographic fault recording data is described in Chapter 6.2.3, page 215. During a fault event, the instantaneous measured values are stored at intervals of 1 ms (f = 50 Hz) and 833 µs (f = 60 Hz) in a buffer of the central unit.
Page 175 Oscillographic Fault Recording 5.6.2 Setting Notes The parameter fault rec mode (6401A/CU) is used to specify the conditions under fault rec mode which oscillographic fault records will be stored. With setting global storage, initiation by CU, fault records will be stored in the central unit and in all bay units if one storage criterion is fulfilled in the central unit.
Page 176 Functions 5.6.3 Settings for the Central Unit Addr. Setting Title Setting Options Default Setting Comments 6401A fault rec mode global storage, local initiation global storage, ini- Mode of fault recording global storage, initiation by tiation by CU local storage, local initiation 6404 MAX.
Page 177: Device
Device Device 5.7.1 Mode of operation This section summarizes those annunciations which are not associated with any pro- tection function. 5.7.2 Annunciations Reset Device Annunciation: The device has performed a start-up. Relevant information: On Initial start Annunciation: The device has performed an initial restart. All buffers have been reset. The parameter settings are unaffected.
Page 178 Functions Reset LED Acknowledgement that LEDs were reset. Relevant information: On Test mode This operating mode is used for device tests during commissioning or maintenance. In test mode, all information in monitoring direction is marked with the UBF test bit. This ensures that events caused by testing do not trigger undesirable reactions (acoustic alarms, derived commands and annunciations) in higher-level system com- ponents (DIGSI).
Page 179 Device The interlocking of this flag with binary input ”>Data Stop” (FNo. 16/CU) is gener- UnlockDT ated via CFC. The flag UnlockDT (Unlock data transmission via BI) has the following meaning: A data transmission stop which has been initiated via binary input may only be reset again by binary input.
Page 180: Power System Data
Functions Power System Data 5.8.1 Mode of operation The SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection needs the data of the power system to match its functions to these data. 5.8.2 Setting Notes The parameter FREQUENCY (5104/CU) is used to set the rated system frequency. FREQUENCY Note The parameter FREQUENCY (7899/BU) can only be set with the bay unit running in...
Page 181: Protection General
Protection General Protection General This section summarizes general information required by the SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection. 5.9.1 Current-Controlled TRIP Reset For a reset of the TRIP command, it must be ensured that the tripped circuit breaker has actually been opened and that the trip circuit of the bay unit has been interrupted by the circuit breaker auxiliary contact.
Page 182 Functions 5.9.3 Operating States "Bay Out of Service", "Maintenance Mode" The parameter Bay status (XX12/CU) is used to select the operating status of the bay unit. Bay out of service / The allocation of a feeder current to a selective measuring system (= bus zone) takes in service place due to the disconnector image ("isolator replica").
Page 183 Protection General Caution! Bus bar protection with transfer bus The transfer bus condition is characterized by the status: Line disconnector Q9 open, respectively all bus bar disconnectors open and transfer bus dis- connector Q7 closed. If the feeder is in transfer busbar operation, the feeder must not be put "out of service". Maintenance mode During disconnector revisions the feedback does not correspond to the switching sta- tus of the disconnectors (e.g.
Page 184 Functions 5.9.5 Feeder-Selective Trip Release The 7SS52 provides the possibility, in the event of a busbar short-circuit, to trip only those feeders for which an additional external criterion is fulfilled. Such a TRIP com- mand release can be provided, for instance, by a pickup of the feeder protection. The TRIP release must be marshalled to a binary output “>TRIP release”...
Page 185 Protection General 5.9.7 Busbar Tripping via an External Signal Apart from the tripping of bus zones by the busbar protection itself, there is the option of tripping individual bus zones via an external signal. With enclosed switchgear, for example, the output signal of a so-called arc barrier can be coupled in the central unit via a binary input and be used to trip the faulty zone.
Page 186 The parameter Test mode SK (5108A/CU) is used to activate and deactivate the Test mode SK test mode for the ZPS-SK module (Chapter 8.2.4, page 287). Siemens recommends to block all TRIP commands. With test mode ON, the protection is blocked.
Page 187 Protection General A TRIP command will be performed selectively for each feeder as soon as the feeder current exceeds this threshold. The set value refers to the rated CT current. If you set a feeder to 0, this feeder will be tripped without an I>query. The parameter Bay status (XX12/CU) is used to select the operating status of the Bay status bay unit.
Page 188 Functions 5.9.9 Settings for the Central Unit Addr. Setting Title Setting Options Default Settings Comments out of service Bay status in service Bay status in service maintenance I> TRIP 0.00..25.00 I / In 0.00 I / In Current threshold for TRIP re- lease non existent BF OP MODE...
Page 189 Protection General 5.9.10 List of Information from the Central Unit $00, .., $03 are variables which will be automatically replaced on entry in the event buffer by $00 Number of the bay unit $01 Bay name $02 Name of the switching element (e.g. isolator or circuit breaker) $03 Name of the bus zone FNo.
Page 190: Bay Unit
Functions 5.10 Bay Unit 5.10.1 Functional Description For the functional description of feeder-specific parameters, please refer to the chap- ters: • Circuit Breaker Failure Protection (Chapter 5.3, page 113) − Characteristics for the Circuit Breaker Failure Protection (Chapter 5.3.1, page 113) −...
Page 191: Integrated Operation Of The Bay Unit
Integrated Operation of the Bay Unit 5.11 Integrated Operation of the Bay Unit 5.11.1 Functional Description This section summarizes those parameters by which you choose the UI language of the bay unit and specify the measured values to be displayed in the “standby” display. 5.11.2 Setting Notes The parameter LANGUAGE (7101/BU) is used to set the UI language of the bay unit.
Page 192 Functions 5.11.3 Settings of the Bay Unit Addr. Setting Title Setting Options Default Settings Comments 7101 LANGUAGE DEUTSCH ENGLISH Operating language ENGLISH FRANCAIS ESPANOL ITALIANO PYCCK. 7120 OPER.1st L. IL1, IL2, IL3, IE Display of measured values in I-DIFF. L1, I-DIFF. L2, the 1st line of the quiescent- I-DIFF.
Page 193: Pc Port Of The Bay Unit
PC Port of the Bay Unit 5.12 PC Port of the Bay Unit 5.12.1 Functional Description The device is equipped with an operating interface integrated in the front panel, the so-called PC port. Communication through this port is subject to certain agreements concerning the transmission formation and the transmission rate.
Page 194 Functions 5.12.3 Settings of the Bay Unit Addr. Parameters Setting Options Default Settings Comments 7208 FUNCT. TYP 1 .. 254 Function type in accordance with VDEW/ZVEI 7211 PC INTERF. DIGSI V3 DIGSI V3 Data format ASCII 7215 PC BAUDRATE 1200 Baud 9600 Baud Transmission rate for PC poirt 2400 Baud...
Page 195: Fault Recording In The Bay Unit ("Local Fault Recording")
Fault Recording in the Bay Unit (”Local Fault Recording”) 5.13 Fault Recording in the Bay Unit (”Local Fault Recording”) 5.13.1 Functional Description Note A description of the central unit's fault recording function is provided in Chapter 5.6, page 158. Reading out of oscillographic fault recording data is described in Chapter 6.2.3, page 215.
Page 196 Functions terion for fault record storage is fulfilled. The storage criterion is selected with the pa- rameter INITIATION 7402/BU The parameter T-POST 7412/BU T-POST is used to set the post-fault time for stopping the fault recording. The post-fault time begins as soon as the stop criterion for fault record storage is fulfilled.
Page 197: Scope Of Protective Functions In The Bay Unit
Scope of Protective Functions in the Bay Unit 5.14 Scope of Protective Functions in the Bay Unit 5.14.1 Functional Description An optional overcurrent protection is provided as a backup protection in the bay units. This protection works independently of the busbar protection function and remains ac- tive even if the link to the central unit is interrupted or if the bay unit is set with the pa- rameter Bay status (XX12/CU) to bay out of service.
Page 198 Functions 5.14.3 Settings of the Central Unit Addr. Setting Title Setting Options Default Settings Comments Bay status out of service in service Bay status in service maintenance 5104 FREQUENCY 50 Hz 50 Hz Nominal frequency 60 Hz 5.14.4 Settings of the Bay Unit Addr.
Page 199: Power System Data Of The Bay Unit
Power System Data of the Bay Unit 5.15 Power System Data of the Bay Unit 5.15.1 Functional Description With the bay unit running in stand-alone mode, the user can set the current transform- er starpoint and the minimum time which must elapse before the TRIP command is reset.
Page 200 Functions The parameter T TRIP 1141/BU T TRIP is used to set the minimum time which must elapse before the TRIP command is reset. This time is started with the output of a TRIP com- mand. Note The parameter T TRIP (1141/BU) can only be set with the bay unit running in stand- alone mode.
Page 201: Overcurrent Protection In The Bay Unit
Overcurrent Protection in the Bay Unit 5.16 Overcurrent Protection in the Bay Unit 5.16.1 Functional Description An optional overcurrent protection is provided as a backup protection in the bay units of the distributed busbar and breaker failure protection SIPROTEC 7SS52 V4. This protection works independently of the busbar protection function and remains active even if the link to the central unit is interrupted or if the bay unit is set with the param- eter Bay status (XX12/CU) to bay out of service.
Page 202 Functions Figure 5-41 O/C protection for phase currents Figure 5-42 O/C protection for the earth current 7SS52 V4 Manual C53000-G1176-C182-1...
Page 203 Overcurrent Protection in the Bay Unit Definite-time over- For the overcurrent stage and/or the high-set current stage, thresholds for the phase current can be set with the parameters I> (1212/BU) or I>> (1202/BU) respectively current protection Each phase current is compared individually with these thresholds, and a phase-se- lective signal is issued if these thresholds are exceeded.
Page 204 Functions The parameter TI>> (1203/BU TI>> is used to set the trip time delay for tripping of the high-set current stage (definite-time). The delay time is started when the threshold for the phase currents is exceeded. This threshold is set with the parameter I>> (1202/ BU).
Page 205 Overcurrent Protection in the Bay Unit The parameter Ip (1214/BU) is used to set the threshold for the phase currents in the overcurrent stage of the inverse-time O/C protection. This parameter is only displayed if the parameter CHARAC. P (7812/BU ) is set to VERSE TIME.
Page 206 Functions The parameter MEAS.REPET. (1506/BU) is used to select whether a repetition of the MEAS.REPET. measurement will be performed for the earth current in the high-set stage. With setting YES the measurement of the earth current in the high-set current stage will be repeated.
Page 207 Overcurrent Protection in the Bay Unit This parameter is only displayed if the parameter CHARAC. E (7815/BU ) is set to VERSE TIME. The parameter TIEp (1515/BU) is used to set the trip time delay (time multiplier) for TIEp the overcurrent stage of the inverse-time O/C protection. This parameter is only displayed if the parameter CHARAC.
Page 208 Functions Addr. Setting Title Setting Options Default Settings Comments 1214 0.10 .. 4.00 I 1.00 I Pick-up value of the overcurrent stage Ip> for the phase currents 1215 0.05 .. 10.00 s 0.50 s Time multiplier for phase cur- 0; +* rents 1216 RMS FORMAT...
Page 209 Overcurrent Protection in the Bay Unit 5.16.4 List of Information from the Bay Unit FNo. Alarm Comments 1721 >I>> block >Overcurrent protection: block stage I>> 1722 >I> block >Overcurrent protection: block stage I> 1723 >Ip block >Overcurrent protection: block stage Ip 1724 >IE>>...
Page 210: User-Defined Annunciations
Functions 5.17 User-Defined Annunciations 5.17.1 Functional Description The bay unit has four annunciations which you can define yourself and allocate them to alarm relays, LEDs or trip relays. Each annunciation is allocated to a delay time. The delay times are set with the pa- rameters T-Annunc.1 to T-Annunc.4 (2801/BU, 2802/BU, 2803/BU, 2804/ BU).
Page 211 User-Defined Annunciations tion to be generated. So, when the respective user-defined annunciation is displayed as ON in the bay unit, at the same time it seems as if a binary input to which this binary input annunciation is configured was activated by a binary signal. Chapter A.10, page 372 gives an overview of the configurable input functions with the corresponding func- tion numbers (FNo.).
Page 212 Functions 5.17.4 List of Information from the Bay Unit FNo. Alarm Comments >Annunc. 1 >User defined annunciation 1 >Annunc. 2 >User defined annunciation 2 >Annunc. 3 >User defined annunciation 3 >Annunc. 4 >User defined annunciation 4 7696 Annunc. 1 User defined annunciation 1 7697 Annunc.
Page 213: Backup Breaker Failure Protection In The Bay Unit
Backup Breaker Failure Protection in the Bay Unit 5.18 Backup Breaker Failure Protection in the Bay Unit 5.18.1 Functional Description If an overcurrent protection function is provided as backup protection in the bay unit, and if the backup breaker failure protection function of the bay unit has been activated with the parameter BackUp CBF (3901/BU), a separate breaker failure protection can be initiated by the bay unit.
Page 214 Functions Figure 5-44 Blocking mechanism for the backup breaker failure protection and backup time overcurrent protection 7SS52 V4 Manual C53000-G1176-C182-1...
Page 215 Backup Breaker Failure Protection in the Bay Unit Continuation for (1) and (2) see Figure 5-22, page 120 Figure 5-45 CBF protection function of the backup protection 7SS52 V4 Manual C53000-G1176-C182-1...
Page 216 Siemens therefore recommends to match the value in the bay unit to its counterpart in the central unit.
Page 217 Backup Breaker Failure Protection in the Bay Unit 5.18.4 List of Information from the Central Unit FNo. Alarm Comments 10490 >Block BF of BU >Blocking back-up breaker fail.prot. BU Blocking back-up breaker fail.prot. BU 10491 Block BF of BU Back-up breaker fail.prot. of BU blocked 10492 Blkd BF of BU >Blocking O/C protection of BU 10493 >Block O/C BU...
Page 218 Functions 5.18.6 List of Information from the Bay Unit FNo. Alarm Comments 1401 >b.u. CBF on >Switch on back-up breaker fail. prot. 1402 >b.u. CBF off >Switch off back-up breaker fail. prot. 1403 >b.u.CBF blk. >Block back-up breaker failure protect. 1451 b.u.
Page 219 Control During Operation You will learn in this chapter how to monitor and operate the SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection. You can use the DIGSI Plant Visualization to visually monitor the substation during op- eration. The Plant Visualization enables the measured values and switch states to be displayed in on-line mode.
Page 220 Control During Operation Overview You can use the 7SS52 V4 for the central operation of the bay units. Central operation means that you can employ DIGSI to manage also the bay units via the central unit. The operating options are listed in Table 6-1, page 204. The central operation of your plant requires a PC with DIGSI installed on it to be con- nected to the central unit.
Page 221 Overview Table 6-1 Overview of the operating options and control options Operating option DIGSI CU opera- BU opera- Chapter logically tor panel tor panel Maintenance mode CU, BU 6.5, page 239 Plant visualization – – 6.6, page 241 Current transformer polarity –...
Page 222 Control During Operation Reading Out Information The SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection provides the following information for on-site retrieval or readout via DIGSI: • Annunciations, • Operational measured values, • Fault data. In this chapter we will introduce each of these information types and explain how you can retrieve them, save them to your PC, and acknowledge them.
Page 223 Reading Out Information Displaying event To display event buffers of the central unit (PC linked to central unit) proceed as fol- buffers with DIGSI lows: Open the central unit in the DIGSI Manager. Click the folder Online in the navigation window of the DIGSI Device Configuration. This will open the directory containing the operating functions of the device (see Figure 6-1, page 207).
Page 224 Control During Operation 6.2.1.1 Operational Annunciations Operational annunciations are information items which the device produces during op- eration. Up to 200 operational events (central unit) and up to 50 operational events (bay units) are stored in the device in chronological order. When the maximum capac- ity of the memory has been reached, the oldest event will be erased.
Page 225 Reading Out Information To display operational events of a single bay unit (PC linked to central unit or bay unit) proceed as follows: Open the corresponding bay unit in the DIGSI Manager. Open the window Select annunciations (Figure 6-4, page 209). Double-click Operational annunciations.
Page 226 Control During Operation Device Trip M Transf. Trip M Figure 6-6 Display of spontaneous annunciations on the display of the central unit − Example Press the button to acknowledge spontaneous annunciations. Following the ac- knowledgment you will see the default display. Fault events in the power system are indicated by “Power System fault“and by Retrievable annunciations...
Page 227 Reading Out Information Double-click an entry in the overview. You can also click an entry and then Show..The corresponding contents of the fault event is displayed on another window. If the bay unit is operated without any central unit, the first fault has the number 900. 6.2.1.3 Alarm List When a bay unit fails, the error LED of the bay unit concerned is lit.
Page 228 Control During Operation 6.2.1.5 Spontaneous Annunciation You can use “Spontaneous Annunciations” to view the log file of incoming current an- nunciations. Note You need DIGSI to read out the spontaneous annunciations. from the PC To read out spontaneous annunciations of the central unit (PC linked to central unit) with DIGSI proceed as follows: Click Spontaneous annunciation.
Page 229 Reading Out Information 6.2.2 Reading Out Measured Values The processing system determines operational measured values in the background. The operational measured values can be retrieved from the display, read out via the PC port using the PC, or they can be transmitted to a central station via the system port.
Page 230 Control During Operation Click the desired measurement group e.g., Operational values primary. The next subgroup is shown. Click the desired subgroup e.g., Bay currents, primary values (Figure 6-1, page 207). Double-click an entry in the list view in the right section of the window. The window with the contents of the corresponding measured value group opens (Figure 6-8, page 214).
Page 231 Reading Out Information Figure 6-10 Window of the operational measured values DIGSI − Example 6.2.3 Reading Out Fault Data The fault data of the bay units are stored in the bay units and the fault data of the cen- tral unit are stored in the central unit. To retrieve and record the fault data from these locations, you need one of the SIGRA programs in addition to DIGSI (optionally avail- able to DIGSI) or the Comtrade Viewer (included in DIGSI).
Page 232 Control During Operation Note When you retrieve the fault data centralized via DIGSI, the following fault records will not appear in the list view: • If a local fault record is triggered via the backup protection of a bay unit or by the trip of an external breaker failure protection in a bay unit, it will depend on the setting of the parameter fault rec mode (6401A/CU) where additional fault records are created in the system (Chapter 5.6.2, page 159).
Page 233 Reading Out Information Please read the SIGRA Manual /4/ i f you want to know more about the numerous op- tion SIGRA 4 offers. To retrieve fault data of a single bay unit (PC linked to central unit or bay unit) proceed as follows: Open the corresponding bay unit in the DIGSI Manager.
Page 234 Control During Operation Controlling Device Functions You have several options for interfering with the SIPROTEC 7SS52 V4 distributed busbar and breaker failure protection during operation to influence individual functions and annunciations. This includes • creating an oscillographic fault record (see Chapter 6.3.1, page 218) •...
Page 235 Controlling Device Functions → Click Device Trigger test fault recording... on the menu bar. The window Fault Record Length opens (Figure 6-14, page 219). Enter the desired fault record length and click OK. The fault recording starts. The fault record length must be within the specified limits. Figure 6-14 Fault Record Length dialog box in DIGSI Note You can also trigger the fault recording via the operator panel of the central unit.
Page 236 Control During Operation In the case of a restart or a power failure, the tagging “TRIP blocked” is retained. The tagging is deleted in the case of an initial start. When blocking exists, changes in the isolator of the blocked bus section are not per- mitted.
Page 237 Controlling Device Functions from the PC To block the TRIP command via the central unit (PC linked to central unit) proceed with DIGSI as follows: Click Control in the navigation window. Double-click Tagging in the function selection. The Tagging window opens (see Figure 6-16, page 221).
Page 238 Control During Operation 6.3.2.2 Blocking the Breaker Failure Protection The external trip of the breaker failure protection can be blocked for the entire protec- tion or busbar-selectively With the external trip of the breaker failure protection blocked, all device-internal pro- tection functions (central unit, bay unit) remain active.
Page 239 Controlling Device Functions BF+: CU command (system port, DIGSI, locally) Pr.: BU test function (DIGSI, locally) The enable input is only observed if the operating mode "BF 2-channel" has been configured (param. XX14 BF BI mode). Figure 6-17 Logic for the blocking of the external breaker failure protection tripping 7SS52 V4 Manual C53000-G1176-C182-1...
Page 240 Control During Operation from the PC To block the breaker failure protection via the central unit (PC linked to central unit) with DIGSI proceed as follows: Click Control in the navigation window. Double-click Tagging in the function selection. The Tagging window opens (see Figure 6-16, page 221).
Page 241 Controlling Device Functions 6.3.3 Saving and Deleting Annunciations Events are stored in the event buffers inside the SIPROTEC device. The same applies for the fault records corresponding to the fault events. Spontaneous indications, to the contrary, are transmitted directly to the computer without buffering in the SIPROTEC device.
Page 242 Control During Operation Figure 6-18 Saving annunciations − Example Click Save. The annunciations are saved. Proceed analogously to save further en- tries. You cannot save entire annunciations groups for the bay units as is possible for the central unit. 6.3.3.2 Deleting Annunciations from the PC To delete annunciations of the central unit (PC linked to central unit) proceed as fol-...
Page 243 Controlling Device Functions Figure 6-19 Deleting annunciations of a bay unit in DIGSI. Click RESETTING STORED DATA. Click Execute. Next a security prompt takes place. Click Yes to delete the data. 6.3.4 Circuit Breaker Test You can test the trip circuits and circuit breakers during operation by applying an on- off circuit via the corresponding bay unit.
Page 244 Control During Operation Figure 6-20 Trip test including circuit breaker from the PC To perform the circuit breaker test with a bay unit (PC linked to central unit or bay unit) with DIGSI proceed as follows: Open the corresponding bay unit in DIGSI Manager. Click Test in the navigation window and select the entry Test in the function selec- tion.
Page 245 Controlling Device Functions Click an entry in the list and click Run..Enter the correct password in the box named Password and then click OK. If the password is wrong, you will receive an error message. When the password is cor- rect, the circuit breaker test will be executed.
Page 246 Control During Operation 6.3.5.2 Reset Blocking of Isolator Fault Depending on the setting of the parameter ISOL Malfunct (6302/CU), there are dif- ferent options of how the blocking will behave (Kapitel 5.5.1.9, Seite 145). The function is acknowledged by applying “Reset IsoMalBl“ or via binary input “>Reset IsoMalBl“...
Page 247 Controlling Device Functions from the PC To initiate an initial start or a restart of the central unit (PC linked to central unit) pro- with DIGSI ceed as follows: → → Click Device Reset or click Device Resume on the menu bar. Activating an initial start or restart can be protected by the password for testing and diagnostics.
Page 248 Control During Operation The status is correct when text no. 1 or text no. 2 according to Table 6-3, page 231 are displayed. Time display The DATE/TIME picture and also all other indications containing date and time may have different time displays. They are determined by the value of the year and the sta- tus identifier “not set“...
Page 249 Controlling Device Functions You can set the clock in the operating mode Internal Clock and also in Exter- nal Impulse via Binary Input mode. The time step involved is indicated via the operational annunciations "Clock SyncError on” and "Clock SyncError off”.
Page 250 Control During Operation dialog box Figure 6-25 Set clock & date in device If you want to change the time offset or the tolerance time of the clock signal in the event of a fault, click Settings (Figure 6-26, page 234). The setting groups are shown in the function selection.
Page 251 Controlling Device Functions Figure 6-27 Time Synchronization & Time Format dialog box in DIGSI Note Date and time can also be set via the operator panel of the central unit. If you want to know more on this topic, please read the System Description /1/. 7SS52 V4 Manual C53000-G1176-C182-1...
Page 252 Control During Operation Feeder Shutdown and Commissioning For additional information have a look at Chapter 5.9.3, page 166. The bay unit can be put into service or shut down • via DIGSI at the central unit with the parameter Bay status (XX12/CU).
Page 253 Feeder Shutdown and Commissioning Figure 6-28 Bay units window − Example Figure 6-29 Bay status window − Example To put a single bay for the busbar protection out of or into service at the bay unit (PC linked to central unit or to bay unit) proceed as follows: Open the corresponding bay unit in DIGSI Manager.
Page 254 Control During Operation Window Test - 4500 COMMUNICATION WITH CENTRAL UNIT Figure 6-30 To put the bay for the busbar protection out of service, click the function Switching bay out of service and click Run..Next a password prompt takes place. To take the bay for the busbar protection into service, click the function Switching bay in service and click Run..
Page 255 Maintenance Mode Maintenance Mode For additional information have a look at Chapter 5.9.3, page 166. The maintenance mode can be performed individually for each feeder as follows: • via DIGSI at the central unit with the parameter Bay status (XX12/CU). •...
Page 256 Control During Operation Enter the correct password in the box named Password and then click OK. If the password is wrong, you will receive an error message. When the password is cor- rect, the bay will be put into maintenance. 7SS52 V4 Manual C53000-G1176-C182-1...
Page 257 Plant Visualization Plant Visualization General The switchgear diagram you have created with the DIGSI Plant Configuration (see Chapter 4.3, page 49) is interpreted and the data set is produced as a result. Further- more, it serves for the visual monitoring of the substation during operation. After the Plant Visualization has been started, the current switchgear diagram is load- ed and displayed.
Page 258 Control During Operation Note The Plant Configuration and the Plant Visualization cannot run simultaneously. Close the Plant Configuration before you start the Plant Visualization. User interface After the Plant Visualization has been started, you see the current switchgear diagram in the application window. The structure of the switchgear diagram is static and cannot be modified i.e.
Page 259 Plant Visualization Display of the Measured value boxes are displayed for the busbars and current transformers each measured values consisting of three fields (phases L1, L2, L3) of the phase currents and always display the current measured value. The first line of each measured value box shows the name of the busbar or of the current transformer.
Page 260 Control During Operation To hide the measured value boxes, proceed analogously. With the measured value boxes hidden, the menu item View → Measured Value Boxes is not checked off and command button is not active. The setting for the display of the measured value boxes is saved and restored after the restart of the Plant Visualization.
Page 261 Installation and Commissioning The installation and commissioning may only be made by experienced commission- ers. They have to be familiar with the commissioning of protection and control sys- tems, with the management of power systems and with the relevant safety rules and guidelines.
Page 262 Installation and Commissioning Installation and Commissioning Pay attention to the operating conditions according to VDE 0100/ 5.73 and VDE 0105 part 1/7.83. Caution! The modules of digital protection equipment contain electrostatically endangered components. These must not be withdrawn or inserted under live conditions! The modules must be handled with care so that any possibility of damage due to static dis- charges is prevented.
Page 263 Installation and Commissioning fiber-optic cables are connected to the central unit, the configured order of the bay units must be followed. The connections on the back of the central unit are marked (Bild 2-6, page 22). The surface-mounted housing has bulkhead cable glands. These can be found at the underside of the housing.
Page 264 Installation and Commissioning 7.1.3 General Information on the 2-Bay Bus Coupler 7.1.3.1 General The coupler bay with the type "2-bay"-coupler is implemented with 2 bay units of the 7SS52. This is necessary when the IO capability of the bay unit (one current trans- former, five isolators) is not sufficient for processing as 1-bay coupler.
Page 265 Installation and Commissioning Maintenance of bay This function is applied during isolator maintenance when the isolator feed-back sig- nals do not correspond with the isolator switching state (e.g. when testing the auxiliary contacts or when the auxiliary supply for isolator status signals is switched off). The feeder remains in service during this time and consequently is part of the busbar protection measurement.
Page 266 Installation and Commissioning Figure 7-1 Connection of the current inputs of the bay units in bus couplers with only one cur- rent transformer. 7SS52 V4 Manual C53000-G1176-C182-1...
Page 267 Checking the Connections Checking the Connections The operational preparations according to Chapter 7.1, page 246 must be completed. Warning! The following inspection steps are performed in the presence of dangerous voltages. Only appropriately qualified personnel familiar with and adhering to safety require- ments and precautionary measures may perform these steps.
Page 268 Installation and Commissioning Commissioning WARNING! Hazardous voltages are present in this electrical equipment during operation. Severe personal injury or property damage can result if the device is not handled properly. Only qualified personnel shall work on and around this equipment after becoming thor- oughly familiar with all warnings and safety notices in this instruction manual as well as with the applicable safety steps, safety regulations, and precautionary measures.
Page 269 Commissioning 7.3.1 How to Proceed Note This manual cannot take into account all possible aspects of the commissioning pro- cedure. The responsibility for a successful commissioning lies with the person who performs it. The following sections lead you through the essential steps of the commissioning. We recommend to commission the protection system and all its functions centrally with DIGSI.
Page 270 Installation and Commissioning 7.3.2 Web Monitor The Web Monitor makes possible the display of parameters, data and measuring val- ues during installation or during operation. For this it uses Internet technology. The SIPROTEC Web Monitor provides several functions for all devices, the others are available depending on the device.
Page 271 Commissioning operate DIGSI 4 at the front operator interface via a COM port of the operator PC and the Web-Monitor at a second interface via an other COM port of the operating PC. The Web-Monitor is composed of HTML pages containing Java applets which are stored in the EEPROM of the SIPROTEC 4 device.
Page 272 Installation and Commissioning Figure 7-2 Web-monitor - Basic display The above figure of the device operation view shows a device connected through the data transmission link with its control (keyboard) and display elements (display, LEDs, inscriptions). The device can be operated with the keys shown in the display in the same way as with the sealed keypad on the device.
Page 273 Commissioning Figure 7-3 Setting the authorization for the Web Monitor for an access via Ethernet interface Device-specific In addition to the general basic functionality, the Web-Monitor for the 7SS52 offers the functionality option of displaying the firmware version of the bay units and for the modules of the central unit.
Page 274 Installation and Commissioning Figure 7-4 Example for the display of operational annunciations Figure 7-5 Example for the display of the HDLC status of the internal serial interfaces 7SS52 V4 Manual C53000-G1176-C182-1...
Page 275 Commissioning Figure 7-6 Example for the display of the firmware version for the modules of the central unit Figure 7-7 Example for the display of the firmware version for the modules of the bay units 7SS52 V4 Manual C53000-G1176-C182-1...
Page 276 Installation and Commissioning Figure 7-8 Remote control of the central unit 7.3.2.3 Operating Modes The Web-Monitor works in the following operating modes set between the operator PC and the SIPROTEC 4 device: Direct serial link Direct link between the device's front or rear service interface and the serial interface of the operator PC.
Page 277 The Web Monitor access rights are assigned with DIGSI using the Interfaces entry. for Web Monitor For this purpose, Siemens recommends to allow Read authorization; in doing so, neit- her the event list can be deleted, nor a command output, nor a saved LED reset via the Web Monitor.
Page 278 Installation and Commissioning 7.3.3 Checking the Switching States of the binary Inputs/Outputs With DIGSI you can purposeful selectively control individual binary inputs, output re- lays and LEDs of the central unit and the bay unit. In this way you can check, e.g. dur- ing the commissioning, the correct connections to the system.
Page 279 Commissioning Figure 7-9 Dialog box devices in/outputs − Example Changing the oper- To change the operating state of a hardware component, click the corresponding ating state panel in the column Nominal. Before executing the first change of the operating state the password No. 6 is demand- ed (provided that it has been activated).
Page 280 Installation and Commissioning If you want to check the effects of a binary input without actual switching operations in the plant, you could do so by controlling individual binary inputs with the hardware test. As soon as you have initiated the first state change for any binary input and have entered the password No.
Page 281 Commissioning Operator address The binary input states (physical states) are displayed by selecting the corresponding operator address and its confirmation. 4700 STATE OF BINARY INPUTS Input sequence for determining the state of binary input 1 Physical state: 4701 BI1-STATE 0: not activated - SHOW? 1: activated E key or...
Page 282 Installation and Commissioning Input sequence for deactivating trip relay 1 4802 TRIP RELAY1 - DEACTIVATE? Entry of the password E key -> ENTER PASSWORD: Password 4802 TRIP RELAY1 F3,F1,F3,F1,F3,F1 -> - DEACTIVATE? In the event of a negative 4802 TRIP RELAY1 E key ->...
Page 283 Commissioning Structure of the In the column Indication the display texts of all indications are displayed which were dialog box allocated to the system port in the matrix. In the column Setpoint status you deter- mine a value for the indications that shall be tested. Depending on each indication type for this several input boxes are offered (e.g.
Page 284 Installation and Commissioning Test in alarm direc- Information in alarm direction must be given by the control center. The correct reaction tion in the device has to be checked. 7.3.5 Control of the Isolator Replica For test purposes, the isolator positions of all available feeders can be preset indepen- dent of the state of the binary inputs.
Page 285 Commissioning 7.3.6 Switching the Test Mode and the Transmission Block On and OFF. If the central unit is linked to a central control or storage facility you can influence in some of the available protocols the information which are transmitted to the control center (see table “Protocol Dependent Functions”...
Page 286 Installation and Commissioning Checks With Secondary Values 7.4.1 General The operational preparations according to Chapter 7.2, page 251 must be completed. Warning! Hazardous voltages are present in this electrical equipment during operation. Severe personal injury or property damage can result if the device is not handled properly. Only qualified personnel may work on and around this equipment after becoming thor- oughly familiar with all warnings and safety notices in this instruction manual as well as with the applicable safety steps, safety regulations, and precautionary measures.
Page 287 Checks With Secondary Values Note The measuring accuracy depends on the electric data of the test source used. The accuracy given in Chapter 9, page 301 “Technical data” Test can only be expected when following the reference conditions corresponding to DIN VDE 0435/Teil 303 or IEC 255 and using precision measuring instruments.
Page 288 Installation and Commissioning 1 For testing the diff-current limit for supervisory function (refer to Chapter 7.3.3, page 262) Figure 7-12 Test setup for the trip characteristic of the busbar-selective measuring system Test steps To prevent that the differential current supervision from blocking the protection dur- ing the test switch it off with the parameter DIFF SUPERV (6306/CU).
Page 289 Checks With Secondary Values On the trip characteristic is valid | I − I | = k [| I | + | I Because the currents I and I have a phase displacement of 180°, you have (1 − k) = I (1 + k) or.
Page 290 Installation and Commissioning Figure 7-14 Test setup for the trip characteristic of the check zone. Test steps Prevent the differential current supervision from blocking the protection during the tests switch it off with the parameter DIFF SUPERV (6306/CU). Set the differential current threshold and the stabilization factor for the busbar-se- lective protection and the check zone as desired.
Page 291 Checks With Secondary Values 7.4.3 Differential Current Monitoring 7.4.3.1 busbar-selective Protection To check the busbar-selective protection, the busbar-selective protection must be set more sensitive than the check zone so that the supervision of the differential current of the check zone picks up later. Example You want to test the supervision for the busbar-selective protection with the parame- ters for the differential current threshold Id>...
Page 292 Installation and Commissioning 7.4.3.2 Check Zone To test the check zone, the check zone must be set more selective than the busbar- selective protection so that the supervision of the check zone picks up earlier. Example You want to test the supervision of the check zone with the parameters for the differ- ential current threshold Id>...
Page 293 Checks With Secondary Values 7.4.4 Overcurrent Threshold Tripping Example For two feeders the overcurrent limit shall be checked which is set in parameter I>TRIP (XX13/CU). Test setup Arrange the test setup as in Chapter 7.4.2, page 271. Test steps To prevent the differential current supervision from blocking the protection during the test switch it off with the parameter DIFF SUPERV (6306/CU).
Page 294 Installation and Commissioning Test steps To prevent the differential current supervision from blocking the protection during checking switch it off with the parameter DIFF SUPERV (6306/CU). Set the supervision of the breaker failure protection triggering inputs with the pa- rameter BF BI MODE (XX14/CU) to 1-ch w/o sup or 2-ch w/o sup.
Page 295 Checks With Primary Values Checks With Primary Values The operational preparations according to Chapter 7.4, page 270 must be complet- Warning! Primary tests may only be carried out by qualified persons who are familiar with the commissioning of protection systems, with the management of power systems and the relevant safety rules and guidelines (switching, earthing etc.) Switch on the primary values.
Page 296 Installation and Commissioning Repeat the last 3 steps for all configured busbars. At the end of the measurements the differential current must be nearly zero. Read out the differential and stabilizing currents of module ZPS-BSZ1 with DIGSI Plant Visualization or the measured value window with DIGSI. The differential cur- rent must be nearly zero and the stabilizing current must be the sum of all currents.
Page 297 Maintenance and Repair This chapter is intended both for personnel in charge of operation and for protection engineers. The chapter tells you how to analyze malfunctions of the device, and describes the maintenance and repair procedures that are required to ensure the functioning of the SIPROTEC 7SS52 V4 protection system.
Page 298 Maintenance and Repair Maintenance Warning! Before executing tests or maintenance works it has to be ensured that there arises no danger for personnel and that the tests do not influence station components which are in service. Warning! Hazardous voltages are present in this electrical equipment during operation. Severe personal injury or property damage can result if the device is not handled properly.
Page 299 Maintenance If you want to take additional precautionary measures to prevent the protection from tripping due to an operator mistake, the 7SS52 V4 offers you the following options: − Set the operator menu Control → Taggings → Set → Trip Blocking on the central unit to ON for as long as test currents are applied.
Page 300 Maintenance and Repair Fault Analysis Disturbances of digital protection devices are in most cases caused by component failures. Practical experience also shows that environmental conditions may in few cases initiate failure alarm. Such environmental conditions can be e.g. short electromagnetic interference beyond the values guaranteed by the manufacturer. If the protection system or ist components are continuously disturbed, the green LED (RUN) goes out, the red LED (ERROR) lights up and the "Device operative / healthy"...
Page 301 Fault Analysis If failures are detected in the bay unit, they are indicated with their bay number. It is then possible to locate the failure more precisely within the bay. Operational events which support identification of a failure are e.g.: •...
Page 302 Maintenance and Repair Module Table 8-1 LEDs of the ZPS-SBK module ZPS-SBK LEDs Status GREEN YELLOW1 YELLOW2 YELLOW3 Operational status • • ⊗ ∇ Failure status • • • ⊗ (diagnosis by means of fault buffer required) bright ∇ • ⊗...
Page 303 Fault Analysis The green LED shines when the module is running without faults. The red LED is lit in the event of a module failure. In the event of failure of a configured bay, but normal function of the module, the green LED flashes in addition to the shining red LED. Reset of the ZPS To reset a central processor module (ZPS): modules...
Page 304 Maintenance and Repair The following measures allow to locate the failure. General If the substation is operating and the control voltage for the trip circuits of the circuit measures breakers is on, the intact portion of the protection system can remain available until the failure is eliminated.
Page 305 Fault Analysis Check the checkbox Weitere Parameter anzeigen. In parameter Test mode for module SK (5108A/CU), click the column Wert. You will now see a list of setting options. Click On in the list and then OK. The second way describes how the test mode is activated by the hardware: Set jumper X34 on the ZPS-SK module to “on”.
Page 306 System I-face –> Reset –> Siemens intern –> Figure 8-2 Monitor mode shown in the device display − Connect the serial port of your PC with the PC port of the central unit, and start DIGSI. − Select in the menu bar under Device the option Initialize Device (Figure 8-3, page 290).
Page 307 Troubleshooting − Enter password No. 7 for the parameter set. The text in the device display disappears for a moment. After successful initialization, the LED indicate normal operation again, and the default image is shown in the display. The device- specific settings have been reloaded into the device, provided that they were saved on the PC during commissioning.
Page 308 Maintenance and Repair Figure 8-4 Reading out device information in DIGSI − Example 7SS52 V4 Manual C53000-G1176-C182-1...
Page 309 Repair Repair Siemens strongly recommends to refrain from repairing units or modules, because they contain especially selected components, which must be handled according to the regulations for EED (Electrostatically Endangered Devices). Most importantly, special techniques are required for working with the printed circuit boards, so that the flow- soldered boards and sensitive components are not damaged.
Page 310 Maintenance and Repair 8.4.1 Replacing the Buffer Battery The annunciations and fault record data of the device are saved in the RAM. The RAM and the internal system clock with calendar are protected against voltage failures with a buffer battery. To maintain this information in case of a voltage failure, a buffer battery must be fitted.
Page 311 Repair Battery Cable binder D-CPU communication module Figure 8-5 Front view after removing the front panel, and location of the buffer battery Use the cable binder to pull the spent battery out from its snap-in holder. Remove the cable binder from the old battery and fasten it to the new battery. Press the new battery firmly into its snap-in holder (see Figure 8-5, page 295).
Page 312 Maintenance and Repair Bay unit To replace the battery in the bay unit: Remove the covering caps on the front panel, and unscrew the screws. Swing the front panel to the left. The battery is located on the bottom front of the PFE module (Figure 8-6, page 296).
Page 313 Repair Press the new battery firmly into its snap-in holder (see Figure 8-6, page 296 or Figure 8-7, page 296). Observe the correct battery polarity! Close the front cover and fasten it again to the housing with the screws. Put the screw covers back on. Switch the auxiliary voltage on again.
Page 314 Maintenance and Repair should be placed vertically on a conductive surface. Such a conductive surface could be e.g. an EMC mat. Replace the fine-wire fuse. The location of the fine-wire fuse can be seen in Figure 8-8, page 298. Insert the module again into the housing. Make sure that the module is fixed correctly and firmly contacted with the rear-side plug connector.
Page 315 Repair Insert the module again into the housing. Make sure that the module is fixed correctly and firmly contacted with the rear-side plug connector. Re-establish the electrical connections with the power supply, and fasten the front panel again. After fastening the front panel, switch the device on. If the auxiliary voltage failure continues to be indicated, there must be a failure or short-circuit in the internal power supply.
Page 316 Maintenance and Repair 8.4.3 Startup with a Defective Bay Unit / Defective Fiber-Optic Cable The protection system can be started up even if a bay has failed (defective bay unit or defective fiber-optic cable). The system first starts up, and the whole protection is blocked. This happens regardless of the setting of parameter BLOCKING MODE (6305/CU).
Page 317 Technical Data This chapter describes the technical specifications of the SIPROTEC 7SS52 V4 dis- tributed busbar and breaker failure protection system, and of its functions, including limits that may on no account be exceeded. The electrical and functional data for the maximum scope of functions are followed by the mechanical data and the dimension drawings.
Page 318 Technical Data General Data TRIP command Minimum duration of TRIP command 0.02 to 1.00 s (in steps of 0.01) Minimum current limit for reset of signal I / I 0.20 to 2.00 (in steps of 0.1) Overcurrent Setting range I / I 0.00 to 25.00 (in steps of 0.1) release of TRIP signals...
Page 319 General Device Data General Device Data 9.2.1 Analog Inputs and Outputs Rated frequency 50 Hz or 60 Hz (settable) Current inputs Rated current 1 A or 5 A Thermal overload capability of current path – continuous 4 × I – for 10 s 30 ×...
Page 320 Technical Data 9.2.3 Binary Inputs Number – Central unit – Bay unit 20 [10] Voltage range DC 24 to 250 V (thresholds selectable by plug-in jumpers) Nominal control voltage DC 24; 60; 110; 220 V Pick-up threshold 0.8 × U Drop-off threshold 0.65 ×...
Page 321 General Device Data 9.2.5 Trip Contacts Bay unit Number of relays 4 [3] (each 2 NO contacts) 1 [2] (1 NO contact) Switching capacity – CLOSE 1000 W / VA – OPEN 30 W/ VA Switching voltage AC / DC 250 V Permissible current: –...
Page 322 Technical Data 9.2.8 Serial Ports Central unit PC port (front) − Connection electrical D-SUB 9-pole − Baud rate 1200 to 115000 bauds System port (rear) IEC 60870-5-103 – Connection optical ST connectors – Baud rate 1200 to 115000 bauds System port (rear) IEC 61850, electrical with EN100 –...
Page 323 General Device Data 9.2.9 Busbar Protection Characteristic Stabilized differential current measurement Setting ranges Overcurrent I / I 0.20 to 4.00 (in steps of 0.01) Stabilizing factor for bus section-selective protection 0.10 to 0.80 (in steps of 0.01) Stabilizing factor for the check zone 0.00 to 0.80 (in steps of 0.01) Diff-current...
Page 324 Technical Data 9.2.10 Circuit Breaker Failure Protection Control modes One or two-channel initiation Modes of operation Individually selectable per feeder: − I>query − TRIP repeat (1/3-phase) with I>query − Unbalancing (1-stage CBF) − Unbalancing with TRIP repeat (1-/3-phase, 2-stage CBF) −...
Page 325 General Device Data 9.2.11 Overcurrent Protection in the Bay Unit Characteristic Definite or inverse time overcurrent protection Setting ranges High-set stage I>> (phase) I / I 0.05 to 25.00 (in steps of 0.01) High-set stage IE>> (earth) I / I 0.05 to 25.00 (in steps of 0.01) ∞...
Page 326 Technical Data Figure 9-1 Trip time characteristics of the inverse-time overcurrent protection, in acc. with IEC 255-3 7SS52 V4 Manual C53000-G1176-C182-1...
Page 327 General Device Data 9.2.12 Auxiliary Functions Self-diagnosis – Current monitoring per feeder – Auxiliary voltage monitoring – Cyclic test – Check of the data transmission between central unit and bay units – Memory tests Operational Feeder currents measured values in A primary and in % I Central unit –...
Page 328 Technical Data 9.2.13 User-Configurable Functions (CFC) Function Module Comment ABSVALUE Formation of absolute value Addition ALARM Alarm AND gate BLINK Flash Block BOOL_TO_CO Boolean to command, conversion BOOL_TO_DI Boolean to double-point indication, conversion BOOL_TO_IC Boolean to internal single-point indication, conversion BUILD_DI Generation of double-point indication CMD_CHAIN...
Page 329 Council Directive in agreement with the generic standards EN 61000-6-2 and EN 61000-6-4 (for EMC directive) and with the standard EN 60255-6 (for Low Voltage Directive) by Siemens AG. The device is designed and manufactured for application in industrial environment.
Page 330 Technical Data – Attenuated oscillation 2.5 kV (Peak Value), polarity alternating IEC 60694, IEC 61000-4-12 100 kHz, 1 MHz, 10 MHz and 50 MHz, = 200 Ω – Discharge of static electricity 8 kV contact discharge; IEC 60 55-22-2, Class IV 15 kV air discharge;...
Page 331 General Device Data EMC tests for noise Standard: EN 61000-6-4 (generic standard) emission – Radio disturbance voltage on lines, 150 kHz to 30 MHz only auxiliary voltage limit value class B IEC-CISPR 22 – Disturbance field intensity 30 MHz to 1000 MHz IEC-CISPR 11 limit value class A 9.2.15 Mechanical Tests...
Page 332 Technical Data 9.2.16 Climatic Stress Tests Warning! Commissioning at temperatures ≤ 0 °C may only be performed if plant conditions en- sure that no command/trip outputs can be activated until the modules have reached their minimum permissible service temperature. Temperatures Standard: IEC 60255–6 Permissible ambient temperature...
Page 333 General Device Data 9.2.17 Service Conditions The relay is designed for use in industrial environment, for installation in standard re- lay rooms and compartments so that with proper installation electro-magnetic compat- ibility (EMC) is ensured. The following should also be heeded: •...
Page 334 Technical Data 9.2.19 MCBs for Device 7SS52x The miniature circuit breaker have one tripping characteristic for thermal overload as well as one for short circuits ( for magnetic trip actuator). For the dimensioning of overload, the continuous as well as momentary current has to be taken into consideration.
Page 335 Dimensions Dimensions 9.3.1 Central Unit Figure 9-2 Mechanical dimensions of the subrack By using the delivered distance angle piece the mounting location decreases up to 40 mm. 7SS52 V4 Manual C53000-G1176-C182-1...
Page 336 Technical Data Figure 9-3 Connection plugs (rear view) of the subrack 7SS52 V4 Manual C53000-G1176-C182-1...
Page 337 Dimensions Figure 9-4 Mechanical dimensions of the surface-mounted casing 7SS52 V4 Manual C53000-G1176-C182-1...
Page 338 Technical Data 9.3.2 Bay Unit Figure 9-5 Dimensional drawing of 7XP2040-1 for panel surface mounting 7SS523 (all dimensions in mm) 7SS52 V4 Manual C53000-G1176-C182-1...
Page 339 Dimensions Figure 9-6 Dimensional drawing of 7XP2040-2 for panel or cubicle flush mounting 7SS523 (all dimensions in mm) 7SS52 V4 Manual C53000-G1176-C182-1...
Page 340 Technical Data Figure 9-7 Dimensional drawing of 7XP2040-2 for panel or cubicle flush mounting 7SS525 (all dimensions in mm) 7SS52 V4 Manual C53000-G1176-C182-1...
Page 341 Dimensions Figure 9-8 Connection plugs (rear view) for flush-mounted casing 7SS523 7SS52 V4 Manual C53000-G1176-C182-1...
Page 342 Technical Data 7SS52 V4 Manual C53000-G1176-C182-1...
Page 343 Appendix This appendix contains ordering information, general diagrams and connection dia- grams, tabular listings of all settings and information of the distributed busbar and fail- ure protection SIPROTEC 7SS52 V4 for the full scope of device functions. Data for Selection and Ordering Basis for Selection of the Stabilization Factor k Connection Diagrams Settings −...
Page 344 Appendix Data for Selection and Ordering Table A-1, page 328 to Table A-2, page 329 gives an overview of the available vari- ants of the components (central unit, bay units) of the protection system SIPROTEC 7SS52 V4 and their ordering codes. Necessary ancillary devices with corresponding ordering codes are added.
Page 345 Data for Selection and Ordering Table A-1 Selection and ordering data for central unit Order No. 7 S S 5 2 Distributed busbar and breaker failure protection SIPROTEC 7SS52 V4 CENTRAL UNIT Service interface (rear port) DIGSI 4, electrical RS232 DIGSI 4, electrical RS485 DIGSI 4, optical 820 nm, ST plug Fitted for...
Page 346 Appendix Table A-3 Selection and ordering data for bay unit 7SS525 Order No. 7 S S 5 2 5 F A 0 1 A A 1 Distributed busbar and breaker failure protection SIPROTEC 7SS52 V4 BAY UNIT System version 50/60 Hz V3.* Rated current at 50/60 Hz Rated auxiliary voltage of converters...
Page 347 Data for Selection and Ordering Table A-5 Ordering data for PC communication software DIGSI ANCILLARY COMPONENTS Order No.. PC communication software DIGSI, Basic 7 X S 5 4 0 0 - 0 A A 0 0 German, English PC communication software DIGSI, Professional 7 X S 5 4 0 2 - 0 A A 0 0 (Basic and all optional packets, incl.
Page 348 Appendix Table A-7 Selection and ordering data for FO connections ANCILLARY COMPONENTS Order No. Fiber-optic connections central unit - bay units FO-Duplex outdoor cable 2G62,5/125, 2 fibers, 6 X V 8 1 0 0 - ST-plugs on both sides FO-Duplex indoor cable 2G62,5/125, 2 fibers, 6 X V 8 1 0 0 - ST-plugs on both sides 100 meter lengths...
Page 349 Basis for Selection of the Stabilization Factor k Basis for Selection of the Stabilization Factor k In a first step, the relationship between the point (in time) at which saturation occurs and the stabilization factor ist established. The following condition must be fulfilled in order to prevent bus zone tripping for an external fault (see Figure A-1, page 333): sin ωT ×...
Page 350 Appendix Connection Diagrams Legend: Binary Input Check zone Bay unit I-DIFF: Differential current I-SUM: Summation current Circuit breaker Alarm reley Bus zone Breaker failure ISO: Isolator Central unit Figure A-3 Connection diagram central unit (continued in Figure A-4, page 335) 7SS52 V4 Manual C53000-G1176-C182-1...
Page 351 Connection Diagrams Figure A-4 Connection diagram central unit (continued from Figure A-3, page 334) 7SS52 V4 Manual C53000-G1176-C182-1...
Page 352 Appendix D-SUB Connectors PC port Service port (F) Time synchronizing port (E) RS 232 RS 485 Shield electrically connected with collar P24_TSIG − − − P5_TSIG − A/A’ (RxD/TxD−N) M_TSIG − − − − C/C’ (GND) − − − − −...
Page 353 Connection Diagrams *) Table A-28 “Marshalling TRIP RELAY” show the default assignment of relay K1 - K5. Legend: Binary Input Trip relay Circuit breaker Alarm reley Breaker failure Figure A-5 Connection diagram bay unit 7SS523 7SS52 V4 Manual C53000-G1176-C182-1...
Page 354 Appendix *) Table A-32 “Marshalling TRIP RELAY” show the default assign- ment of relay K1 - K5. Legend: Binary Input Trip relay Circuit breaker Alarm reley Figure A-6 Connection diagram bay unit 7SS525 7SS52 V4 Manual C53000-G1176-C182-1...
Page 355 Connection Diagrams D-SUB connectors PC port Shield electrically connected with collar − − − − − − Connections for The transmit and receive connections of the FO cables are identified by the symbols for transmit (output) and for receive (input). 7SS52 V4 Manual C53000-G1176-C182-1...
Page 356 Appendix Settings − Central Unit A.4.1 Settings of the ZPS Modules The ZPS modules are a component of the central unit. They can be used as master (ZBS-SBK) or slave (ZPS-BSZ or ZPS-SK) in the multi-processor system. The C53207-A361-B12-1 module can be applied universally as ZPS-SK, ZPS-SBK and ZPS-BSZ.
Page 357 Settings Central Unit − Table A-8 Jumper settings for the ZPS module ZPS Functions Jumper BSZ 1 BSZ 2 BSZ 3 SK 1 SK 2 SK 3 SK 4 SK 5 SK 6 5 - 6 5 - 6 5 - 6 5 - 6 5 - 6 5 - 6...
Page 358 Appendix A.4.2 Settings of the EAZ Module Figure A-8 Jumper layout on the EAZ module Table A-10 Jumper settings for the EAZmodule Connector Jumper Not installed X11 to X17 Jumpers for the setting of the control voltage (see Table A-11, page 343) X21 to X27 X31 to X37 7SS52 V4 Manual...
Page 359 Settings Central Unit − Table A-11 Jumper settings for different control voltages of the binary inputs of the EAZ module Setting for nominal control voltage Name 24 V 60 V 110 V 220 V BI1 to BI5 (on module D-CPU, Table A-14, page 345) BI10 BI11 BI12...
Page 360 Appendix A.4.3 Jumper Settings of the D-CPU Module Figure A-9 Location of the jumpers on the D-CPU module The service port can be configured as RS232, RS485 or as optical interface. Insert the jumpers according to Table A-13, page 345. The Ethernet interface module EN100 has no plug-in jumpers.
Page 361 Settings Central Unit − Note The jumpers settings on the connectors X103 and X104 must always be the same, i.e. either both on 1-2 or both on 2-3. Table A-13 Jumper settings (service port) for the D-CPU-module Connector Jumper RS232 RS485 optical X103...
Page 362 Appendix Jumper Settings − Bay Unit A.5.1 Settings of the PFE Module Figure A-10 Location of the jumpers on the PFE module Table A-15 Jumper settings for the PFE module Connector Jumper Not installed Not installed Not installed 7SS52 V4 Manual C53000-G1176-C182-1...
Page 363 Jumper Settings Bay Unit − A.5.2 Settings of the SVW Module Figure A-11 No jumpers on the SVW module 7SS52 V4 Manual C53000-G1176-C182-1...
Page 364 Appendix A.5.3 Settings of the SAF Module Figure A-12 No jumpers on the SAF module 7SS52 V4 Manual C53000-G1176-C182-1...
Page 365 Jumper Settings Bay Unit − A.5.4 Settings of the AFE Module Figure A-13 No jumpers on the AFE module 7SS52 V4 Manual C53000-G1176-C182-1...
Page 366 Appendix A.5.5 Settings of the EFE Module Figure A-14 Location of the jumpers on the EFE module Table A-16 Jumper settings for the EFE module Connector Jumper X35 to X94 Jumpers for the voltage setting, see Table A-17, page 351 X2 (wire jumper) Not installed X95 (wire jumper)
Page 367 Jumper Settings Bay Unit − Table A-17 Jumper settings for different control voltages of the binary inputs of the EFE module Setting for nominal control voltage Name 24 V 60 V 110 V 220 V BI 1 BI 2 BI 3 BI 4 BI 5 BI 6...
Page 368 Appendix A.5.6 Settings of the EFE_10 Module Figure A-15 Location of the jumpers on the EFE_10 module Table A-18 Jumper settings for the EFE_10 module Connector Jumper X35 to X58 and Jumpers for the voltage setting, see Table X74 to X79 A-19, page 353 X2 (wire jumper) Not installed...
Page 369 Jumper Settings Bay Unit − Table A-19 Jumper settings for different control voltages of the binary inputs of the EFE_10 module Setting for nominal control voltage Name 24 V 60 V 110 V 220 V BI 1 BI 2 BI 3 BI 4 BI 5 BI 6...
Page 370 Appendix Protocol-Dependent Functions Table A-20 Protocol dependent functions Function IEC 60870-5-103 IEC 61850 (EN100) Protocol Protocol Operational measured values Fault recording Protection setting by remote control User-defined indications and switching objects Time synchronization Annunciation with time stamp Commissioning Aids • Alarm and Measured Value Transmission Blocking •...
Page 371 Parameter Listing - Central Unit Parameter Listing - Central Unit Addr. Setting Title Function Setting Options Default Setting Comments 106A Combi-Coupler Combi-Coupler Bay status out of service in service Bay status in service maintenance I>TRIP 0.00 .. 25.00 I/In 0.00 I/In Current threshold for TRIP release BF BI MODE 1-ch w/o sup...
Page 372 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 5401 PROT TR BUS Protec. general Selective protection for transfer busbar 6101 STAB FAC:BZ BB Protection 0.10 .. 0.80 0.65 Stabilizing factor - selective 6102 Id> BZ BB Protection 0.20 .. 4.00 I/Ino 1.00 I/Ino Diff-current threshold - selective 6103...
Page 373 Parameter Listing - Bay Unit Parameter Listing - Bay Unit Addr. Setting Title Function Setting Options Default Setting Comments 1101 CT STARPNT Power System TOWARDS LINE TOWARDS LINE Current transformer polarity Data TOWARDS BUSBAR 1105 In PRIMARY Power System 10..20000 A 400 A Primary rated current Data...
Page 374 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 1516 RMS FORMAT O/C Protection FUNDAMENTAL FUNDAMENTAL RMS format for inverse time O/C Earth TRUE RMS protection 1521 MAN.CLOSE O/C Protection IE>> UNDELAYED IE>> UNDELAYED Overcurrent stage valid for phase Earth IE>/IEp UNDELAY.
Page 375 Parameter Listing - Bay Unit Addr. Setting Title Function Setting Options Default Setting Comments 5701 IL1[%] = Current in phase L1 [%] = 5702 IL2[%] = Current in phase L2 [%] = 5703 IL3[%] = Current in phase L3 [%] = 5704 IE[%] = IE[%] =...
Page 376 Appendix Addr. Setting Title Function Setting Options Default Setting Comments 7120 OPER.1st L. Integrated Opera- IL1, IL2, IL3, IE Display of measured values in the tion I-DIFF. L1, I-DIFF. L2, 1st line of the quiescent-state indi- I-DIFF. L3 cation in 4-line mode I-RESTR.
Page 377 Parameter Listing - Bay Unit Addr. Setting Title Function Setting Options Default Setting Comments 7402 INITIATION Fault Recordings STORAGE BY FD. STORAGE BY FD. Initiation of data storage STORAGE BY TRIP START WITH TRIP 7410 T MAX Fault Recordings 0.30..5.00 s 2.00 s Maximum time period of a fault re- cordingl...
Page 378 Appendix List of information - Central Unit Indications for IEC 60870-5-103 are always reported as ON / OFF if they are subject to general interrogation for IEC 60870-5-103. If not, they are only reported as ON. New user-defined indications or such newly allocated to IEC 60 870-5-103 are set to ON / OFF and subjected to general interrogation if the information type is not a spon- taneous event (".._W").
Page 379 List of information - Central Unit 3. column ”IEC 60870-5-103“: Column ”Type“ (Function Bus Zone): Information that belong to the bus zones are of type 207. In this type up to 256 information numbers can be addressed. The type is divided into 12 blocks with 21 information numbers each.
Page 380 Appendix Column ”Type“ (Function Bay Unit): Informationen that belong to the bay units are of types 195 to 206. In these types up to 256 information numbers can be addressed. These types are divided into 4 blocks each with 63 information numbers each. The blocks are assigned to the bay units.
Page 381 List of information - Central Unit FNo. Description Function Type Log-Buffer Configurable in Matrix IEC 60870-5-103 ofIn- for- matio >Synchronize Internal Real Time Device SP_E LED BI Clock (>Time Synch) >Trigger Waveform Capture Osc. Fault Rec. LED BI (>Trig.Wave.Cap.) >Reset LED (>Reset LED) Device LED BI >Test mode (>Test mode)
Page 382 Appendix FNo. Description Function Type Log-Buffer Configurable in Matrix IEC 60870-5-103 ofIn- for- matio 10413 Diff-current supervision Check Monitoring Zone L3 (Id-sup CZ L3) 10415 Diff-current superv. BZ (group Monitoring alarm) (Id-sup BZ 10416 Diff-current superv. BZ L1 (group Monitoring alarm) (Id-sup BZ L1 M) 10417 Diff-current superv.
Page 383 List of information - Central Unit FNo. Description Function Type Log-Buffer Configurable in Matrix IEC 60870-5-103 ofIn- for- matio 10444 Blocking by supervision zero Monitoring crossing (Block ZeroCross) 10445 Device Trip (group alarm) (Device BB Protection trip M) 10446 Trip command L1 (group alarm) BB Protection (Trip L1 10447...
Page 384 Appendix FNo. Description Function Type Log-Buffer Configurable in Matrix IEC 60870-5-103 ofIn- for- matio 10480 Bus bar protection complete IEC61850-info blocked (BB prot blkd) 10481 BF protection complete blocked IEC61850-info (BF prot blkd) 10484 BB protection complete blocked IEC61850-info by error (BBP blckd err) 10485 BB protection partially blocked by IEC61850-info...
Page 385 List of information - Central Unit FNo. Description Function Type Log-Buffer Configurable in Matrix IEC 60870-5-103 ofIn- for- matio 176.1091 Timing error BF input $00 L1 (BF- BIErr $00 L1) 176.1092 Timing error BF input $00 L2 (BF- BIErr $00 L2) 176.1093 Timing error BF input $00 L3 (BF- BIErr $00 L3)
Page 386 Appendix FNo. Description Function Type Log-Buffer Configurable in Matrix IEC 60870-5-103 ofIn- for- matio 176.1172 5V supply supervision $00 (5V- superv $00) 176.1173 0V supply supervision $00 (0V- superv $00) 176.1174 Battery supervision $00 (BattSu- perv $00) 176.1175 Measured value supervision I- SUM $00 (MeasInSup $00) 176.1190 Failure in automatic testing $00...
Page 387 List of information - Central Unit FNo. Description Function Type Log-Buffer Configurable in Matrix IEC 60870-5-103 ofIn- for- matio 177.1354 Trip command BF for $03 phase Protection Zone L3 (Trip BF $03 L3) 177.1360 >Trip command for $03 (>Trip Protection Zone LED BE REL FS $03)
Page 388 Appendix A.10 List of Information - Bay Unit FNo. Short Text Logical Function Log Buffers Configurable IEC 60870-5-103 in Matrix >Time Synchro >Time synchronization >Start FltRec >Start fault recording >LED reset >Reset LED indicators >ParamSelec.1 >Parameter group selection 1 (with >ParamSelec2) >ParamSelec.2 >Parameter group selection 2 (with >ParamSelec1)
Page 389 List of Information - Bay Unit FNo. Short Text Logical Function Log Buffers Configurable IEC 60870-5-103 in Matrix Failure 0V Failure of internal 0 VDC power supply on/off Failure I/O Failure in I/O module on/off Fail. TripRel Supervision trip circuit on/off Common alarm on/off...
Page 390 Appendix FNo. Short Text Logical Function Log Buffers Configurable IEC 60870-5-103 in Matrix 1403 >b.u. CBF blk. >Block back-up breaker failure protect. on/off 1451 b.u. CBF off Back-up breaker fail.prot. switched off on/off 1452 b.u. CBF act. Back-up breaker fail.prot. is active on/off 1453 b.u.
Page 391 List of Information - Bay Unit FNo. Short Text Logical Function Log Buffers Configurable IEC 60870-5-103 in Matrix 1780 Fault L13E O/C fault detection L1-L3-E 1781 Fault L23 O/C fault detection L2-L3 1782 Fault L23E O/C fault detection L2-L3-E 1783 Fault L123 O/C fault detection L1-L2-L3 1784...
Page 392 Appendix FNo. Short Text Logical Function Log Buffers Configurable IEC 60870-5-103 in Matrix 7609 >Isolator5on >Isolator 5 - position closed on/off 7610 >Isolator5off >Isolator 5 - position open on/off 7611 >CBF L1 >Circuit breaker failure start phase L1 7612 >CBF L2 >Circuit breaker failure start phase L2 7613 >CBF L3...
Page 393 List of Information - Bay Unit FNo. Short Text Logical Function Log Buffers Configurable IEC 60870-5-103 in Matrix 7657 BB TRIP block TRIP commands of whole busbar blocked on/off 7658 SVS SS block. BF (ext.start) of whole busbar blocked on/off 7659 Test mode Test mode of protective functions...
Page 394 Appendix A.11 Group Alarms - Central Unit Abbreviations $00, .., $03 are variables which are replaced automatically with $00 Number of the bay unit $01 Bay name $02 Name of the switching element (e.g. Isolator or circuit breaker) $03 Name of the bus zone BUnn Bay number 01 to 48 BSZz Modules for protection processing BSZ1, BSZ2, BSZ3 Phase L1, L2, L3...
Page 395 Group Alarms - Central Unit Group Alarm Alarm FNo. Description FNo. Logical function Relates to 10445 Device Trip 177.1342 Trip command for $03 L1 BZnn 177.1352 Trip command BF for $03 phase L1 BZnn 177.1343 Trip command for $03 L2 BZnn 177.1353 Trip command BF for $03 phase L1...
Page 396 Appendix Group Alarm Alarm FNo. Description FNo. Logical function Relates to 10471 Isolator oper. prohibitted 176.1062 Maintenance of bay $00 BUnn 10455 Bay unit failure 176.1063 Bay unit $00 failure BUnn 10451 Transformer reversed in polarity 176.1195 Transformer reversed in polarity $00 BUnn 10456 Circuit breaker fault...
Page 397 Group Alarms - Central Unit Group Alarm Alarm FNo. Description FNo. Logical function Relates to 10423 Measured value superv. BU 176.1175 Measured value superv. $00 BUnn 10429 Failure in auto testing 176.1190 Failure in automatic testing $00 BUnn 1 If Parameter ISOL Malfunct(6302/CU) is set to Blocking . 2 If Parameter DIF SUP mode CZ (6311/CU) is set to Blocking .
Page 398 Appendix A.12 Group Alarms - Bay Unit Group Alarm Alarm FNo. Description FNo. Logical function General internal failure of device Only existing alarm is 161. Measured value supervision of cur- Standard-Group Alarms for all Measured Value rents Supervisions. On BU the summation current will be monitored.
Page 399 Measured Value List - Central Unit A.13 Measured Value List - Central Unit Abbreviations $00, .., $03 are variables which are replaced automatically by Comments $00 Number of the bay unit $01 Bay name $02 Name of the switching element (e.g. isolator or circuit breaker) $03 Name of the bus zone Column Function: Checkzone I is not allocateable to the control center.
Page 400 Appendix A.14 Measured Value List - Bay Unit FNo. Description Function IEC 60870-5-103 Configurable in Matrix 5701 IL1[%] = Current in phase L1 [%] = 5702 IL2[%] = Current in phase L2 [%] = 5703 IL3[%] = Current in phase L3 [%] = 5704 IE[%] = IE[%] = 5705...
Page 401 Marshalling - Central Unit A.15 Marshalling - Central Unit When the device leaves the factory, the annunciations for the binary inputs, relays, LEDs and function keys are preallocated for the maximum scope. For the prealloca- tion, please refer to Table A-21, page 385. Table A-21 Marshalling of the Binary Inputs Binary...
Page 402 Appendix Relay Annunciation FNo. Comments CB fault M 10456 Circuit breaker fault Bay DC fail M 10426 Failure of isolator aux. voltage Isol flt run M 10427 Isolator fault: run time Isol flt pos M 10428 Isolator position faulty Isol flt alarm 10425 Isolator fault alarm TRIP blocked...
Page 403 Marshalling - Central Unit Annunciation Comments CB fault M 10456 Circuit breaker fault Bay DC fail M 10426 Failure of isolator aux. voltage Isol flt run M 10427 Isolator fault: run time Isol flt pos M 10428 Isolator position faulty Isol flt alarm 10425 Isolator fault alarm...
Page 404 Appendix A.16 Marshalling - Bay Unit 7SS523 When the device is delivered, annunciations are marshalled to the binary inputs, re- lays, and LEDs for the maximum scope. The functional keys are pre-assigned. The marshalling can be found in Table A-25, page 388 to Table A-29, page 390. Table A-25 Marshalling of the binary inputs of the bay unit 7SS523 Address...
Page 405 Marshalling - Bay Unit 7SS523 Table A-27 Marshalling Signal Relays of the bay unit 7SS523 Address 1st display line 2nd display line FNo. Comment 6201 SIGNAL RELAY 1 Bay o.of serv 7640 Bay is out of service Table A-28 Marshalling TRIP RELAYS of the bay unit 7SS523 Address 1st display line 2nd display line...
Page 406 Appendix Table A-29 Marshalling LED indicators of the bay unit 7SS523 Address 1st display line 2nd display line FNo. Comment 6301 LED 1 >Isolator1on 7601 >Isolator 1 - position closed 6302 LED 2 >Isolator1off 7602 >Isolator 1 - position open 6303 LED 3 >Isolator2on...
Page 407 Appendix A.17 Marshalling - Bay Unit 7SS525 When the device is delivered, annunciations are marshalled to the binary inputs, re- lays, and LEDs for the maximum scope. The functional keys are pre-assigned. The marshalling can be found in Table A-25, page 388 to Table A-29, page 390. Table A-30 Marshalling of the binary inputs of the bay unit 7SS525 Address...
Page 408 Appendix Table A-32 Marshalling TRIP RELAYS of the bay unit 7SS525 Address 1st display line 2nd display line FNo. Comment 6401 TRIP RELAY 1 BB Trip L123 7631 Busbar protection: Trip in phase L123 CBF Trip L123 7643 CBF protection: Trip L123 CBF Trp.rp.3p 7632 CBF protection: Trip repeat phase L123...
Page 409 Navigation Tree - Central Unit 7SS52 V4 Manual C53000-G1176-C182-1...
Page 410 Appendix 7SS52 V4 Manual C53000-G1176-C182-1...
Page 411 Navigation Tree - Central Unit 7SS52 V4 Manual C53000-G1176-C182-1...
Page 412 Appendix 7SS52 V4 Manual C53000-G1176-C182-1...
Page 413 Navigation Tree - Central Unit 7SS52 V4 Manual C53000-G1176-C182-1...
Page 414 Appendix 7SS52 V4 Manual C53000-G1176-C182-1...
Page 415 Navigation Tree - Central Unit 7SS52 V4 Manual C53000-G1176-C182-1...
Page 416 Appendix 7SS52 V4 Manual C53000-G1176-C182-1...
Page 417 Navigation Tree - Central Unit 7SS52 V4 Manual C53000-G1176-C182-1...
Page 418 Appendix 7SS52 V4 Manual C53000-G1176-C182-1...
Page 419 Navigation Tree of the Bay Unit A.19 Navigation Tree of the Bay Unit The following navigation tree gives an overview of the parameter blocks and the indi- vidual parameters that can be set in the bay units of the SIPROTEC 7SS52 V4 distrib- uted busbar and failure protection.
Page 420 Appendix A.20 Abbreviations Auxiliary bus (bus coupler) sections (sections which serve exclusively for longi- tudinal connection of bus zones and to which no outgoing feeders are connect- Busbar protection Breaker Failure Binary input Binary output BSZ1 Processing board for protection in the check zone BSZ2/3 Processing boards for protection in the selective zones Bay unit...
Page 421 References A.21 References SIPROTEC 4, System Description E50417-H1176-C151-A4 SIPROTEC DIGSI 4, Start-Up E50417-G1176-C152-A3 DIGSI CFC, Manual E50417-H1176-C098-A6 SIPROTEC SIGRA 4, Manual E50417-H1176-C070-A3 Ethernet & IEC 61850 Start UP E50417-F1100-C324-A1 SIPROTEC Distributed Busbar/Breaker Failure Protection IEC 61850 PIXIT C53000-G1176-C180-1 7SS52 V4 Manual C53000-G1176-C182-1...
Page 422 Appendix 7SS52 V4 Manual C53000-G1176-C182-1...
Page 423 Index 2-bay coupler 103 without circuit breaker 104 Abbreviations 404 Busbar coupling via isolators 145 Additional support iv Busbar protection 92 Algorithm 100 Evaluation of half-cycles 96 Annunciation buffer deleting 224 Applications 4 Central unit Assigning Bay Units 61 8MF cubicle 17 Auxiliary voltage supply failure 145 Communication module (D-CPU) 16 Fiber-optic module (LMZ) 17...
Page 424 Index Circuit breaker Data for selection 328 Checks 227 DCF77 75 Not ready 125 Defining Bays 54 CLOSE command Deleting Detection 136 event buffer 225 Commissioning 252 Dimensions Commissioning tool 254 Bay unit 322 Concluding the configuration Central unit 319 concluding 79 Double leaf-spring-crimp contacts 26 Configuration Notes 81...
Page 425 Index Inserting the central unit 47 Memory 142 Inserting Typicals Release of the breaker failure protection 117 inserting 59 Trip output 142 Installing the bay unit Zero current 144 Cubicle mounting 247 Panel flush mounting 247 Navigation tree Panel surface mounting 247 BU 403 Installing the central unit CU 393...
Page 426 Index I< MAN TRIP 170 T-BF-1P 127 I> 188 T-BF-3P 127 I> BF 114 T-BINARY IN 180 I> BF.EF 114 T-CB open 137 I> TRIP 170 Test mode SK 170 I>> 187 TI> 188 I>ZERO CR 153 TI>> 188 Id> BZ 108 T-Idiff SUPERV 152 Id>...
Page 427 Index PC port 71 Time format 78 Service port 71 Time Synchronization 75 Setting 70 Training courses iv Setting the date 231 Transfer busbars 105 Setting the time 231 Transmission block 269 Setting values Transmittig setting values apply 70 to the device 70 Settings BU 346 Trigger Settings CU 340...
Page 428 Index 7SS52 V4 Manual C53000-G1176-C182-14...
Page 429 Corrections From Siemens AG Name: Dept. PTD PA D PSN D-90459 Nürnberg Company/Dept: Germany Address: Dear reader, printing errors can never be entirely eliminated: there- Phone no: Fax no: fore, should you come across any when reading this manual, kindly enter them in this form together with any comments or suggestions for improvement that you may have.
Page 430 Offenders are liable to the payment of damages. All rights are reserved in the event Subject to technical alteration of the grant of a patent or the registration of a utility model Siemens Aktiengesellschaft Order-no. : C53000-G1176-C182-1 Available from: LZF Fürth-Bislohe...

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