1. Manuals
  2. Brands
  3. Siemens Manuals
  4. Protection Device
  5. 7SV512
  6. Instruction manual

Siemens 7SV512 Instruction Manual

Numerical circuit breaker failure protection v1.0
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Numerical Circuit Breaker Failure Protection
7SV512
V1.0
Instruction Manual
Figure 1 Illustration of the numerical circuit breaker failure protection relay 7SV512 (in flush mounting case)
E Siemens AG 1994
Order No. C53000---G1176---C91---3

Advertisement

Table of Contents
loading

Related Manuals for Siemens 7SV512

Summary of Contents for Siemens 7SV512

  • Page 1 Numerical Circuit Breaker Failure Protection 7SV512 V1.0 Instruction Manual Order No. C53000---G1176---C91---3 Figure 1 Illustration of the numerical circuit breaker failure protection relay 7SV512 (in flush mounting case) E Siemens AG 1994...
  • Page 3 Conformity is proved by tests that had been performed according to article 10 of the Council Directive in accor- dance with the generic standards EN 50081---2 and EN 50082---2 (for EMC directive) and the standards EN 60255---6 (for low-voltage directive) by Siemens AG by Siemens AG. The device is designed and manufactured for application in industrial environment.
  • Page 4 7SV512 Conformity This page intentionally left blank. C53000---G1176---C91...

  • Page 5: Table Of Contents

    7SV512 Contents Contents Introduction ...............
  • Page 6 7SV512 Contents 4.5.4 Monitoring functions ..............
  • Page 7 Should further information be desired or should par- ties is the sole warranty of Siemens. Any statements ticular problems arise which are not covered suffi- contained herein do not create new warranties nor ciently for the purchaser’s purpose, the matter...
  • Page 8 7SV512 Contents This page intentionally left blank. C53000---G1176---C91 viii...

  • Page 9: Introduction

    A circuit breaker pole discrepancy supervision is in- stage can be used to repeat the trip command to the tegrated in the 7SV512. It prevents that only one or relevant breaker, normally on different trip coils, if the two poles of the breaker are open continuously. A...

  • Page 10: Features

    7SV512 Introduction Features --- Processor system with powerful 16---bit---micro- --- Instantaneous trip possible in case of defective processor; circuit breaker; --- Complete digital measured value processing and --- Transmission of trip command to the remote end control from data acquisition and digitizing of the possible;...

  • Page 11: Design

    Design 7SV512 V1 Design Arrangements All protection functions including dc/dc converter are -- 7SV512K- -KCKKK- - in housing 7XP2030--2 for accommodated on one Double Europa Format plug- panel flush mounting or cubicle installation in module. This module is installed in a 7XP20 hous- ing.
  • Page 12 Design 7SV512 V1 Voltage connector Heavy current connector e.g. 1B4 e.g. 1A2 horizontal position vertical position consecutive connection number Figure 2.1 Connection plugs (rear view) -- housing for flush mounting -- example C53000--G1176--C91...

  • Page 13: Dimensions

    Design 7SV512 V1 Dimensions Figures 2.2 and 2.3 show the dimensions of the various types of housing available. 7SV512 Housing for panel surface mounting 7XP2030--1 29.5 .... Interface for optical ..fibre below Reset and paging buttons Earthing terminal 16 Max.
  • Page 14 Design 7SV512 V1 7SV512 Housing for panel flush mounting or cubicle installation 7XP2030--2 29.5 Mounting plate Reset and paging buttons Connector modules Heavy current connectors: Screwed terminal for max. 4 mm 5 or M4 Twin spring crimp connector in parallel for max.

  • Page 15: Ordering Data

    Design 7SV512 V1 Ordering data Numerical Circuit Breaker 9. 10. 11. 12. 13. 14. 15. 16. Failure Protection 7 S V 5 1 2 Rated current; rated frequency 1 A; 50/60 Hz ........

  • Page 16: Technical Data

    7SV512 Technical data Technical data General data 3.1.1 Inputs/outputs Measuring circuits Rated current I 1 A or 5 A Rated frequency f 50 Hz/60 Hz (settable) Power consumption current path at I = 1 A approx 0.1 VA per phase and earth current...
  • Page 17 7SV512 Technical data Signal contacts Signal/alarm relays Contact per relay 1 CO or 1 NO Switching capacity MAKE/BREAK W/VA Switching voltage 250 V Permissible current Binary inputs Number Operating voltage 24 to 250 Vdc Current consumption, energized approx 1.7 mA,...

  • Page 18: Electrical Tests

    7SV512 Technical data 3.1.2 Electrical tests Insulation tests Standards: IEC 60255---5 --- High voltage test (routine test) 2 kV (rms); 50 Hz except d.c. voltage supply input --- High voltage test (routine test) 2.8 kV dc only d.c. voltage supply input --- Impulse voltage test (type test) 5 kV (peak);...

  • Page 19: Mechanical Stress Tests

    7SV512 Technical data 3.1.3 Mechanical stress tests Vibration and shock during operation Standards: IEC 60255---21 and IEC 68---2 --- Vibration sinusoidal IEC 60255---21---1, class 1 10 Hz to 60 Hz: + 0.035 mm amplitude; IEC 68---2---6 60 Hz to 150 Hz: 0.5 g acceleration...

  • Page 20: Climatic Stress Tests

    7SV512 Technical data 3.1.4 Climatic stress tests --- Permissible ambient temperature during service ---5 C to +55 C during storage ---25 C to +55 C during transport ---25 C to +70 C Storage and transport with standard works packaging! --- Permissible humidity mean value per year ±...

  • Page 21: Circuit Breaker Failure Protection

    7SV512 Technical data Circuit breaker failure protection Breaker supervision Current detection setting range 0.05 I to 4.00 I (steps 0.01 I drop-off ratio approx. 0.9 tolerance 0.01 ¡ I or 5 % of set value Supervision via breaker auxiliary contacts...

  • Page 22: Ancillary Functions

    7SV512 Technical data Ancillary functions Output of measured values Operational values of currents , and I (if connected) in A primary and in % I Measuring tolerances ± 2 % of rated value Measured values plausibility checks --- Sum of currents...

  • Page 23: Method Of Operation

    ¡ 1 5 x 2 trip com- +/--- E mands (can be marshalled) 10 binary inputs Serial Control centre interface Personal Serial Power computer interface supply Figure 4.1 Hard-ware structure of the numerical circuit breaker failure protection relay 7SV512 C53000---G1176---C91...
  • Page 24 7SV512 Method of operation processing speed to suit the measured value pro- conditions as well as visual indicators (LEDs) and an cessing. The matched analog values are then alphanumerical display on the front. passed to the analog input section AE.

  • Page 25: Circuit Breaker Failure Protection

    The breaker failure protection In addition to this basic operation sequence, then issues a command to trip the back-up breakers 7SV512 contains further possibilities which are de- and interrupt the fault current. scribed in detail in the following sections.

  • Page 26: Current Flow Monitoring

    3¡I plausibility current in case the earth current is not RESIDUAL CURRENT available. This negative sequence current is calcu- lated by 7SV512 (Figure 4.5). The negative se- quence current I is calculated according to its defi- nition equation: Figure 4.5...

  • Page 27: Processing Of The Circuit Breaker Auxiliary Contacts

    7SV512 Method of operation 4.2.3 Processing of the circuit breaker auxiliary contacts Current flow is not a reliable criterion for proper oper- If the circuit breaker poles can be switched individu- ation of the circuit breaker for faults which do not ally but only two binary inputs can be used, one can cause detectable current flow (e.g.
  • Page 28 7SV512 Method of operation CB aux. contacts: BI 20 > 1 & any pole closed BI 16 > 1 & L1 closed > 1 & L1 open BI 17 > 1 & L2 closed > 1 & L2 open BI 18 >...

  • Page 29: Initiation Conditions And Delay Times

    AUX to be started (refer Figure 4.9). input ”>Start”. For Buchholz protection it is recom- mended that the trip command is connected to 7SV512 by two separate wire pairs in order to achieve dual channel initiation of the breaker failure protection.

  • Page 30: Two-Stage Breaker Failure Protection With Common Phase Initiation

    7SV512 Method of operation 4.2.4.2 Two-stage breaker failure protection L123” and ”BFP Trip” are generated Cross with common phase initiation which normally repeat the command for the feeder circuit breaker (local trip or cross trip). After expiry of Two-stage protection means that two timers (or sets the second time stage, the bus-bar (section) is dis- of timers) with different delay times are started.
  • Page 31 7SV512 Method of operation Initiation can be blocked via the binary input ”>B/F >Trip block” (e.g. during test of the feeder protection > = 1 & Init L1 relay). Additionally, an internal blocking facility is provided (refer also Section 4.2.7).
  • Page 32 7SV512 Method of operation (acc. Aux L123 & Fig 4.6) & ”1” T2---CB--- > 1 (acc. Init T1--- Fig 4.11) L123 Trip L123 3POLE ”1” > 1 & L1> T2--- & > 1 (acc. CURR. L2> Fig 4.4) ¦ §...

  • Page 33: Combined Initiation Conditions

    7SV512 Method of operation 4.2.4.4 Combined initiation conditions tion does not provide a fault detection signal (e.g. differential protection), its trip signal is connected to both mentioned binary inputs. The conditions of initiation and circuit breaker pole monitoring can be combined at will. Figure 4.13 shows the total logic.

  • Page 34: Circuit Breaker Not Fully Operational

    (see Fig 4.13) monitor alarm signal can be fed to the binary input & BFP CB ”>CB defect” of the 7SV512. On occurrence of this T3--- >CB defect defTrip BR---DEF alarm and trip command of the feeder protection, a separate timer T3---BR---DEF is started (Figure 4.14), which is normally set to 0.
  • Page 35 7SV512 Method of operation Thus, release signal Rel2 is produced by the general also in case of end fault protection operation (refer fault detection signal of the main protection at BI 10 Section 4.3). as long as no blocking signal is present at BI 8;...

  • Page 36: End Fault Protection

    In 7SV512, an additional criterion is bus-bar protection. Nevertheless, a trip command the presence of a fault detection signal from the given to the feeder circuit breaker cannot clear the feeder protection relay.

  • Page 37: Ancillary Functions

    Ancillary functions The ancillary functions of the circuit breaker failure Some indicators and relays indicate conditions; it is protection 7SV512 include: not appropriate that these should be stored. Equally they cannot be reset until the originating criterion --- Processing of annunciations, has been removed.

  • Page 38: Information To A Central Unit (Optional)

    All stored information can be transmitted via an opti- data, cal fibre connector (optional) to a control centre, for example, the SIEMENS Localized Substation Auto- --- The data remain available for recall until com- mation System LSA 678. Transmission uses a stan- mencement of the next fault event.

  • Page 39: Monitoring Functions

    I input of the relay. module is incorporated in 7SV512. This is described in conjunction with the breaker failure protection function in Section 4.2.7. In addition, the general...

  • Page 40: Software Monitoring

    7SV512 Method of operation D Formation of the modulus for the program --- Current symmetry memory (EPROM) and comparison of it with a reference program modulus stored there, In healthy operation it can be expected that the currents will be approximately symmetrical. The...

  • Page 41: Installation Instructions

    Installation instructions 7SV512 Installation instructions Warning The successful and safe operation of this device is dependent on proper handling and installation by qualified personnel under observance of all warnings and hints contained in this manual. In particular the general erection and safety regulations (e.g. IEC, DIN, VDE, or national standards) regarding the correct use of hoisting gear must be observed.

  • Page 42: Mounting And Connections

    7SV512 Installation instructions 5.2.1 Mounting and connections 5.2.2 Checking the rated data 5.2.1.1 Model 7SV512K--- KBKKK for panel sur- The rated data of the unit must be checked against the plant data. This applies in particular to the rated face mounting current of the current transformers and rated d.c.
  • Page 43 Installation instructions 7SV512 Binary input 2 : Solder bridge W5 Binary input 1 : Solder bridge W6 For rated voltages 24/48/60 V---: Solder bridges must be fitted! For rated voltages 110/125/220/250 V---: Solder bridges may be removed. Figure 5.1 Checking of control voltages for binary inputs 1 and 2...

  • Page 44: Checking The Lsa Data Transmission Link

    7SV512 Installation instructions 5.2.3 Checking the LSA data transmission link For models with an interface for a central data pro- The normal signal position for the data transmission cessing station (e.g. LSA) these connections must is factory preset as ”light off”. This can be changed also be checked.

  • Page 45: Connections

    Installation instructions 7SV512 5.2.4 Connections General and connection diagrams are shown in Ap- For the trip release module to operate optimally, cer- pendix A and B. The marshalling possibilities of the tain plug jumpers are to be observed on the addi- binary inputs and outputs are described in Section tional p.c.b.
  • Page 46 7SV512 Installation instructions --- And, of course: The plug jumpers are arranged as shown in Figure 5.6. Figure 5.5 shows the mechanical and electrical arrangement and is intended as translation between Caution! Figure 5.4 and 5.6. Electrostatic discharges via the compo-...

  • Page 47: Checking The Connections

    Installation instructions 7SV512 5.2.5 Checking the connections --- Fit a d.c. ammeter in the auxiliary power circuit; Warning range approx. 1.5 A to 3 A. Some of the following test steps are carried --- Close the battery supply circuit breaker; check out in the presence of hazardous voltages.

  • Page 48: Configuration Of Operational Functions

    7SV512 Installation instructions Configuration of operational functions 5.3.1 Operational preconditions For most operational functions, the input of a code- The codeword is not required for the read-out of an- word is necessary. This applies for all entries via the nunciations, operating data or fault data, or for the membrane keyboard or front interface which con- read-out of setting parameters.
  • Page 49 Installation instructions 7SV512 If one tries to leave the setting range for the configu- When one exits the setting program, the altered pa- ration blocks (i.e. address blocks 60 to 79) with keys rameters, which until then have been stored in buffer Ý...
  • Page 50 7SV512 Installation instructions Message to be displayed in the 1st display line during 7 0 0 5 O P E R . 1 s t operation. Any of the operational measured values ac- I L 1 [ % ] = cording to Section 6.4.5 can be selected as messages...

  • Page 51: Configuration Of The Device Functions

    Configuration of the device functions 5.4.1 Introduction The device 7SV512 is capable of providing a series ciated device function. In the second line is the asso- of functions. The scope of the hard- and firm-ware is ciated text (e.g. ”EXIST”). If this text is appropriate matched to these functions.

  • Page 52: Programming The Scope Of Functions

    (e.g. no command). Functions which are configured as NON EXIST will not be processed in 7SV512: There will be no annun- The following boxes show the possibilities for the ciations and the associated setting parameters maximum scope of the device.

  • Page 53: Marshalling Of Binary Inputs, Binary Outputs And Led Indicators

    Installation instructions 7SV512 Marshalling of binary inputs, binary outputs and LED indicators 5.5.1 Introduction The functions of the binary inputs and outputs repre- input module and should initiate a (logical) function, sented in the general diagrams (Appendix A) relate namely start of the breaker failure protection. The to the factory settings.
  • Page 54 7SV512 Installation instructions One can proceed through the marshalling blocks key E. Immediately the associated identification of with the key Ý or go back with the key ß . Within a the function appears for checking purposes. This block, one goes forwards with " or backwards with # can be altered either by entering another function .

  • Page 55: Marshalling Of The Binary Inputs

    Installation instructions 7SV512 5.5.2 Marshalling of the binary inputs --- address block 61 .0 means ”normally open” mode, corresponds to The unit contains 10 binary inputs which are desig- nated INPUT 1 to INPUT 10. Input s 1 to 9 can be ”NO”...
  • Page 56 7SV512 Installation instructions Reset of stored LED indications, FNo 6; 0 0 1 I N P U T ”normally open” operation: > L E D r e s e t LEDs are reset when control voltage present 0 0 2...
  • Page 57 Installation instructions 7SV512 The complete pre-settings are listed in Table 5.2. Addr 1st display line 2nd display line Remarks Heading of the address block 6100 MARSHALLING BINARY INPUTS Acknowledge and reset of stored LED and dis- 6101 BINARY INPUT 1...

  • Page 58: Marshalling Of The Signal Output Relays

    7SV512 Installation instructions 5.5.3 Marshalling of the signal output relays --- address block 62 The unit contains 8 signal outputs (alarm relays). ciation functions are naturally not effective when the The signal relays are designated SIGNAL RELAY 1 corresponding protection function is not fitted in the to SIGNAL RELAY 8 and can be marshalled in ad- relay or has been programmed out (”de-configured”...
  • Page 59 Installation instructions 7SV512 Note as to Table 5.3: Annunciations with the function numbers below 100 are identical with those for binary inputs. They represent the direct confirmation of the binary input and are available as long as the correspond- ing binary input is energized. These direct confirmation functions are indicated by a leading ”>” sign.
  • Page 60 7SV512 Installation instructions Abbreviation Description Start of breaker failure protection for pole L1 BFP-Start L1 Start of breaker failure protection for pole L2 BFP-Start L2 Start of breaker failure protection for pole L3 BFP-Start L3 Any delay time is running Time del.init...

  • Page 61: Marshalling Of The Led Indicators

    Installation instructions 7SV512 5.5.4 Marshalling of the LED indicators --- address block 63 The unit contains 8 LEDs for optical indications, 6 of With direct input of the function number it is not nec- essary to input the leading zeros. To indicate wheth- which can be marshalled.
  • Page 62 7SV512 Installation instructions After input of all annunciation functions for LED 1, change-back to the marshalling level is carried out with F ": 6 3 0 1 L E D Allocations for LED 1 The complete pre-settings for LED indicators are listed in Table 5.5.

  • Page 63: Marshalling Of The Command (Trip) Relays

    Installation instructions 7SV512 5.5.5 Marshalling of the command (trip) relays --- address block 64 The unit contains 5 trip relays which are designated Important note: With single-pole trip it is imperative TRIP RELAY 1 to TRIP RELAY 5. The trip relays can that for each circuit breaker pole the corresponding be marshalled in the address block 64.
  • Page 64 7SV512 Installation instructions Trip relay 3 has been preset for: 0 0 2 T R I P R E L . 1st: Trip command for the local (feeder) circuit, B F P T r i p L 1 2 3 three-pole, FNo 505;...

  • Page 65: Configuration Parameters For Localized Substation Automation

    Installation instructions 7SV512 Configuration parameters for localized substation automation --- address block 69 The unit must be informed as to whether it is used as They are valid also for identification of the device in a component in a localized substation automation the control centre.
  • Page 66 7SV512 Installation instructions corresponding Annunciation Annunc. FNo General trip signal from feeder protection Trip signal three-pole from feeder protection Trip signal L1 from feeder protection Trip signal L2 from feeder protection Trip signal L3 from feeder protection Block breaker failure protection...

  • Page 67: Operating Instructions

    7SV512 Operating instructions Operating instructions Safety precautions The keyboard comprises 28 keys with numbers, Yes/No and control buttons. The significance of the keys is explained in detail in the following. Warning Numerical keys for the input of numerals: All safety precautions which apply for work...

  • Page 68: Operation With A Personal Computer

    7SV512 Operating instructions Confirmation key: 6.2.2 Operation with a personal com- Enter or confirmation key: each puter numerical input or change via the Yes/No keys must be confirmed by A personal computer allows, just as the operator the enter key; only then does the device accept the change.

  • Page 69: Representation Of The Relay (Front View)

    7SV512 Operating instructions 6.2.4 Representation of the relay (front view) Readiness indication (green) Unit faulty indication (red) Betrieb/Service Two line display (LCD) with 16 charac- Störung/Blocked ters each LED 1 to 6 (red) can be marshalled; pre- Schalterversagerschutz setting shown below...

  • Page 70: Setting The Functional Parameters

    7SV512 Operating instructions Setting the functional parameters 6.3.1. Introduction --- Addresses which require text input 6.3.1.1 Parameterizing procedure The display shows the four-digit address, i.e. For setting the functional parameters it is necessary block and sequence number (e.g. 1201 for block to enter the codeword (see 5.3.1).

  • Page 71: Selectable Parameter Sets

    7SV512 Operating instructions If one tries to leave the setting range for the function- All parameter sets can be accessed in a similar man- al parameter blocks (i.e. address blocks 10 to 39) ner: with keys Ý ß, the display shows the question ”END OF CODEWORD OPERATION ?”.

  • Page 72: Setting Of Date And Time

    7SV512 Operating instructions Following copying, only such parameters need be Copy changed which are to be different from the source Addr. from parameter set. 8510 ORIG.SET SET A Parameterizing must be terminated for each param- eter set as described in Section 6.3.1.1.

  • Page 73: Initial Displays

    When the relay is switched on or the operator terminal has been connected, firstly the address 0000 and the type identification of the relay appears. All Siemens relays have an MLFB (machine readable type number). When the device is operative and displays a quiescent message, any desired address can be reached e.g. by pressing the direct address key DA followed by the address number.
  • Page 74 7SV512 Operating instructions With address 1112, the device is instructed as to Address 1112 is then set as how the earth current input of the relay is connected. ratio of the earth current CT Ie/Iph = This information is important for the monitoring of ratio of the phase current CT measured values.

  • Page 75: Settings For Circuit Breaker Failure Protection

    The breaker failure protection 7SV512 can be oper- tolerance of the delay timers. The time sequence is ated single-stage or two-stage: illustrated in Figure 6.2 for two-stage breaker failure...
  • Page 76 7SV512 Operating instructions fault inception fault clearance time normal prot. CB operating time reset safety trip (local) I---BF margin initiation breaker failure protection time delay T1 of breaker failure trip command reset safety protection repeat I---BF margin time delay T2 of breaker...
  • Page 77 7SV512 Operating instructions Beginning of the block ”Circuit breaker failure protec- 1 2 0 0 B R E A K E R tion” F A I L U R E P R O T . Circuit breaker failure protection is...
  • Page 78 If the binary inputs and outputs been incorporated to the 7SV512 relay. For details are assigned as delivered and if the relay is con- refer to Section 4.2.7.
  • Page 79 7SV512 Operating instructions In those cases where the pre-conditions of one or during current transformer saturation), the blocking the other plausibility check cannot be fulfilled be- of the breaker failure protection can be delayed un- cause of the physical arrangement of the substation der address 1222.

  • Page 80: Settings For Fault Recording

    7SV512 Operating instructions 6.3.5 Settings for fault recording --- address block 28 The relay is equipped with fault data storage (see The fault data storage can be initiated either with each start of the breaker failure protection or only by Section 4.5.2).

  • Page 81: Settings For Measured Value Monitoring

    7SV512 Operating instructions 6.3.6 Settings for measured value monitoring --- address block 29 The different monitoring functions of the protective during operation, one or more monitoring functions relay are described in Section 4.5.4. They partly reacts sporadically, then sensitivity should be re- monitor the relay itself and partly the steady-state duced.

  • Page 82: Settings For Breaker Pole Discrepancy Supervision

    7SV512 Operating instructions 6.3.7 Settings for breaker pole discrepancy supervision --- address block 38 A precondition for the correct operation of the pole The delay time T---DISCREP (address 3802) deter- discrepancy supervision is that this function is confi- mines how long time a breaker pole discrepancy gured as EXIST under address 7838 (refer Section condition of the feeder circuit breaker, i.e.

  • Page 83: Annunciations

    7SV512 Operating instructions Annunciations 6.4.1 Introduction After a network fault, annunciations and messages --- Direct selection with address code, using key DA, provide a survey of important fault data and the func- address 5 0 0 0 and execute with key E,...

  • Page 84: Operational Annunciations

    7SV512 Operating instructions 6.4.2 Operational annunciations --- address block 51 Operational and status annunciations contain infor- After selection of the address 5100 (by direct selec- tion with DA 5 1 0 0 E and/or paging with Ý or ß mation which the unit provides during operation and and further scrolling "...
  • Page 85 7SV512 Operating instructions User defined annunciation No 1 received via binary > A n n u n c . input (C/G) User defined annunciation No 2 received via binary > A n n u n c . input (C/G) User defined annunciation No 3 received via binary >...
  • Page 86 7SV512 Operating instructions Annunciations of monitoring functions: F a i l u r e 1 8 V Failure in internal supply voltage 18 V (C/G) F a i l u r e 1 5 V Failure in internal supply voltage 15 V (C/G)
  • Page 87 7SV512 Operating instructions Operational annunciation of the circuit breaker failure protection: B F P o f f Circuit breaker failure protection is switched off (C/G) Circuit breaker failure protection initiated (signal from B F P - P i c k u p...

  • Page 88: Fault Annunciations

    7SV512 Operating instructions 6.4.3 Fault annunciations --- address blocks 52 to 54 The annunciations which occurred during the last To call up the last fault data, one goes to address 5200 either by direct address DA 5 2 0 0 E or by three network faults can be read off on the front pan- paging with the keys Ý...
  • Page 89 7SV512 Operating instructions General fault annunciations of the device: S y s t . F l t System fault with consecutive number F a u l t Beginning of fault I L 1 / I n = Interrupted fault current of phase L1...
  • Page 90 7SV512 Operating instructions Trip by breaker failure protection on the bus-bar B / F - B R d e f T r i p breakers during defect of the feeder breaker Annunciations of pole discrepancy supervision: P o l e D i s . S t a r t Pole discrepancy supervision started P o l e D i s .

  • Page 91: Circuit Breaker Operation Statistics

    Operating instructions 6.4.4 Circuit breaker operation statistics --- address block 56 The number of trip commands initiated by 7SV512, reached by direct addressing DA 5 6 0 0 E or by i.e. the number of breaker fail occurrences, is paging with the keys Ý or ß until address 5600 is counted.

  • Page 92: Read-Out Of Operational Measured Values

    7SV512 Operating instructions 6.4.5 Read-out of operational measured values --- address block 57 The steady state rms operating values can be read and in percent of the rated device values. To ensure out at any time under the address 5700. The ad-...

  • Page 93: Operational Control Facilities

    The 7SV512 con- lation of the device and that they are connected ac- tains facilities, e.g. to re-adjust the real time clock, to cordingly (refer to Section 5.5.2 Marshalling of the...
  • Page 94 7SV512 Operating instructions 6.5.2 Erasing stored annunciations and counters --- address block 82 The statistical indications (Section 6.4.4, address of resetting the LED indications (address 8201), co- 5600) are stored in EEPROMs in the device. They deword entry is necessary to erase the stored items.

  • Page 95: Off/On Control Of Part Functions Of The Device

    7SV512 Operating instructions 6.5.3 Off/On control of part functions of the device During operation of protection relay it may be de- A function is switched OFF when the off---command sired to control the relay manually or from system cri- is given by EITHER the binary input OR from the op- erator panel or the operating interface.
  • Page 96 7SV512 Operating instructions Binary input Completion indication confirmation (’comes’ and ’goes’) Circuit breaker failure protection 1 2 0 1 B R E A K F A I L >B/F on O F F >B/F off B/F off Pole discrepancy supervision...

  • Page 97: Selection Of Parameter Sets

    7SV512 Operating instructions 6.5.4 Selection of parameter sets --- address block 85 Up to 4 different sets of parameters can be selected The corresponding procedure is used for the other for the functional parameters, i.e. the addresses parameter sets: above 1000 and below 4000. These parameter sets...

  • Page 98: Change-Over Of The Active Parameter Set Via Binary Inputs

    7SV512 Operating instructions Address 8501 shows the actually active parameter set 8 5 0 1 A C T I V P A R A M S E T Use the ”No”---key N to page through the alternatives. 8 5 0 3...

  • Page 99: Testing And Commissioning

    7SV512 Operating instructions Testing and commissioning DANGER! Secondary connections of the current 6.6.1 General transformers must be short-circuited before the current leads to the relay are interrupted! Prerequisite for commissioning is the completion of If a test switch is installed which automati- the preparation procedures detailed in Chapter 5.

  • Page 100: Testing The Circuit Breaker Failure Protection

    7SV512 Operating instructions 6.6.2 Testing the circuit breaker failure protection In order to test the circuit breaker failure protection, 508, LED 4 when delivered). Check that the as- this function must be switched on, i.e. address 1201 signed trip relay contacts close (trip relays 2 when BREAK FAIL = ON.

  • Page 101: Testing The End Fault Protection

    7SV512 Operating instructions 6.6.3 Testing the end fault protection 6.6.4 Testing the circuit breaker pole discrepancy supervision The end fault protection is made effective. To achieve this, the time T---ENDFAULT (address 1220) For these tests the pole discrepancy supervision must be set back to a definite value (not 1), e.g. to must be configured as POLE DISCR = EXIST (ad- the default value 0.10 s.

  • Page 102: Commissioning Using Primary Tests

    7SV512 Operating instructions Commissioning using primary tests 6.7.1 Checking the initiation condi- All secondary testing sets and equipment must be removed. Reconnect current and voltage transform- tions ers. For testing with primary values the line must be energized. All possible initiation conditions must be checked.

  • Page 103: Checking The Local Trip With Breaker Failure Criterion From The Auxiliary Contacts

    7SV512 Operating instructions 6.7.2 Checking the local trip with 6.7.3 Checking the local trip and the breaker failure criterion from the current circuits auxiliary contacts The current transformer connections are checked with real primary current. Before the protected ob- The circuit breaker --- isolated by its adjacent dis-...

  • Page 104: Checking The Intertrip To The Opposite Feeder End

    7SV512 Operating instructions 6.7.4 Checking the intertrip to the op- 6.7.5 Checking the bus-bar trip posite feeder end All devices which are necessary for transmission of The distribution of the trip commands to the adja- the intertrip signal to the opposite feeder end must...

  • Page 105: Putting The Relay Into Operation

    7SV512 Operating instructions Putting the relay into operation All setting values should be checked again, in case Stored indications on the front plate should be reset by pressing the push-button ”RESET LED” on the they were altered during the tests. Particularly check...

  • Page 106: Maintenance And Fault Tracing

    Maintenance and fault tracing Maintenance and fault tracing Routine checks Siemens digital protection relays are designed to re- quire no special maintenance. All measurement and signal processing circuits are fully solid state and Routine checks of characteristics or pick-up values therefore completely maintenance free.

  • Page 107: Replacing The Clock Module

    7SV512 Maintenance and fault tracing Replacing the clock module If the device is equipped with the clock option (mod- --- Loosen the draw-out module using the pulling el 7SV512K--- KKKK1--- KK, refer Section 2.3 Ordering aids provided at the top and bottom. (Figure 7.3).

  • Page 108: Fault Tracing

    7SV512 Maintenance and fault tracing Clock module on multi-pin socket Figure 7.1 Position of the clock module Fault tracing If the protective device indicates a defect, the follow- --- Has the mini-fuse in the power supply section ing procedure is suggested: blown (see Figure 7.2)? If appropriate, replace the...

  • Page 109: Replacing The Mini-Fuse

    7SV512 Maintenance and fault tracing 7.3.1 Replacing the mini-fuse --- Select a replacement fuse 5 ¢ 20 mm. Ensure --- Pull out the module and place onto the conductive that the rated value, time lag (medium slow) and surface. code letters are correct. (Figure 7.2).
  • Page 110 7SV512 Maintenance and fault tracing Removing the basic module: --- Loosen the basic module using the pulling aids provided at the top and bottom, --- Pull out basic module and place onto con- ductive surface. Inserting the basic module: --- Push releasing lever fully to the right,...

  • Page 111: Repairs

    7SV512 Repairs, Storage Repairs Storage Repair of defective modules is not recommended at Solid state protective relays shall be stored in dry all because specially selected electronic compo- and clean rooms. The limit temperature range for nents are used which must be handled in accor-...

  • Page 112: Appendix

    7SV512 Appendix Appendix General diagrams Connection diagrams Tables C53000---G1176---C91...

  • Page 113: General Diagrams

    7SV512 Appendix General diagrams Figure A.1 General diagram 7SV512 (sheet 1 of 3) C53000---G1176---C91...
  • Page 114 7SV512 Appendix Figure A.2 General diagram 7SV512 (sheet 2 of 3) C53000---G1176---C91...
  • Page 115 7SV512 Appendix Figure A.3 General diagram 7SV512 (sheet 3 of 3) C53000---G1176---C91...

  • Page 116: Connection Diagrams

    7SV512 Appendix Connection diagrams Figure B.1 Connection diagram (example) of 7SV512 C53000---G1176---C91...
  • Page 117 7SV512 Appendix Surface mounting case Flush mounting/cubicle installation 7SV512 L1 L2 L3 Figure B.2 Connections to three current transformers with star-point (residual current) --- standard circuit, suitable for all systems Surface mounting case Flush mounting/cubicle installation 7SV512 L1 L2 L3 Figure B.3 Connections to two current transformers, only for isolated or compensated systems...
  • Page 118 7SV512 Appendix Surface mounting case Flush mounting/cubicle installation L1 L2 L3 7SV512 Important! Cable shield must be earthed at the side facing the cable! Note: The correct polarity of the earth current transformer is a precondition for the correct function of the measured value supervision Figure B.4 Connections to three current transformers --- residual current fed from particular summation...

  • Page 119: C Tables

    7SV512 Appendix Tables Table C.1 Table of All Binary Inputs ............
  • Page 120 7SV512 v1 Appendix Table C.1 Table of All Binary Inputs 7SV512 Function can be marshalled to binary input (BI) FNo. Abbreviation Meaning not allocated No input function allocated >Time Synchro Synchronize internal real time clock >LED reset Reset stored led indicators >Start FltRec...
  • Page 121 Appendix 7SV512 v1 Table C.2 Table of All Binary Outputs 7SV512 Rel,LED To Output Relay or LED Annunc. marshallable OP, PC To operator panel or PC Annunciated "Coming" "Coming" and "Going" To localized substation autom Annunciated "Coming" "Coming" and "Going"...
  • Page 122 7SV512 v1 Appendix Abbreviation Meaning Dev.Operative Device operative Re-start Re-start of processor system Syst.Flt Fault in the Power System Fault Fault event LED reset LED's Reset Flt.Rec.activ Fault recording data being transmitted Fault.Rec.off Fault recording function switched off Rel.TimeResp. Real time response to LSA Param.Running...
  • Page 123 Appendix 7SV512 v1 Abbreviation Meaning BFP-Start. L1 Breaker fail protection START:Phase L1 BFP-Start. L2 Breaker fail protection START:Phase L2 BFP-Start. L3 Breaker fail protection START:Phase L3 Time del.init Time delay initiated BFP-BFdefTrip Circuit breaker defective: TRIP BFP Trip L1 Local 1 pole trip: Phase L1...
  • Page 124 7SV512 v1 Appendix Table C.3 Reference Table for Configuration Parameters 7SV512 6000 MARSHALLING 6100 MARSHALLING BINARY INPUTS 6101 INPUT 1 6106 INPUT 6 6102 INPUT 2 6107 INPUT 7 6103 INPUT 3 6108 INPUT 8 6104 INPUT 4 6109 INPUT 9...
  • Page 125 Appendix 7SV512 v1 6300 MARSHALLING LED INDICATORS 6301 LED 1 6304 LED 4 6302 LED 2 6305 LED 5 6303 LED 3 6306 LED 6 6200 MARSHALLING SIGNAL RELAYS 6201 RELAY 1 6205 RELAY 5 6202 RELAY 2 6206 RELAY 6...
  • Page 126 7SV512 v1 Appendix 6203 RELAY 3 6207 RELAY 7 6204 RELAY 4 6208 RELAY 8 6300 MARSHALLING LED INDICATORS 6301 LED 1 6302 LED 2 6400 MARSHALLING TRIP RELAYS 6401 TRIP REL. 1 6404 TRIP REL. 4 6403 TRIP REL. 3 6405 TRIP REL.
  • Page 127 Appendix 7SV512 v1 6402 TRIP REL. 2 6900 LSA CONFIGURATION 6902 LSA BAUDR. 7000 OPERATING PARAMETERS 7001 LANGUAGE 7006 OPER. 2nd L 7002 OPER.BAUDR 7007 FAULT 1st L 7003 DATE FORM. 7008 FAULT 2nd L 7004 FAULT IND. 7009 DEVICE ADD.
  • Page 128 7SV512 v1 Appendix 7005 OPER. 1st L 7010 FEEDER ADD. 7800 SCOPE OF FUNCTIONS 7828 FAULT RECRD 7885 PARAM.C/O 7838 POLE DISCR 7899 FREQUENCY 7869 LSA C53000-G1176-C91...
  • Page 129 Appendix 7SV512 v1 Table C.4 Reference Table for Functional Parameters 7SV512 1000 PARAMETERS 1100 POWERSYSTEM DATA 1105 In PRIMARY 1115 T-TRIP min. min. 0.00 max. 50000 _______ max. 32.00 _______ 1112 Ie/Iph min. 0.10 max. 20.00 _______ 1200 BREAKER FAILURE PROT.
  • Page 130 7SV512 v1 Appendix 2800 FAULT RECORDINGS 2801 FAULT REC. 2803 FAULT REC. TO PC/PD TO LSA 2802 INITIATION 2804 T-REC BY FAULT DETEC. min. 0.01 BY TRIP <T-REC max. 2.50 _______ 2900 MEAS.VALUE SUPERVISION 2903 SYM.Ithres 2905 SUM.Ithres min. 0.10 I/In min.
  • Page 131 Appendix 7SV512 v1 Table C.5 Operational Control Facilities 7SV512 8000 Device Control 8100 Setting Real Time Clock 8101 DATE/TIME 8102 DATE 8103 TIME 8104 DIFF. TIME 8200 Reset 8201 RESET LED ? 8202 RESET COUNTERS ? 8203 RESET TOTAL Isc ? 8204 RESET OPERAT.ANNUNC.
  • Page 132 7SV512 v1 Appendix 1200 1201 BREAK-FAIL 2800 2801 FAULT REC. 3800 3801 POLE-DISCR C53000-G1176-C91...
  • Page 133 7SV512 Corrections/Suggestions V1.0 From ________________________________________ SIEMENS AKTIENGESELLSCHAF T Name Dept. EV S SUP 21 ________________________________________ D---13623 BERLIN Company/Dept. Germany ________________________________________ Address Dear reader, ________________________________________ printing errors can never be entirely eliminated: Telephone no. therefore, should you come across any when...
  • Page 136 All rights are reserved in the event of the grant of a patent or the registration of a utility model or design. Subject to technical alteration Order No. C53000---G1176---C91---3 Siemens Aktiengesellschaft Available from: LZF Fürth---Bislohe Printed in the Federal Republic of Germany AG 0499 0.2 FO 128 En...

Table of Contents