Siemens Reyrolle 7SR5 User manual

Reyrolle 7SR5
Transformer Protection
Device
7SR54
V01.00
Device Manual
C53000-G7040-C015-1
Preface
Open Source Software
Table of Contents
Introduction 1
Basic Structure of the Device Functionality 2
Device Functionality 3
7SR54 Function Templates 4
Protection and Automation Functions 5
Supervision Functions 6
Control Functions 7
Instruments and Meters 8
Functional Tests 9
Technical Data 10
Appendix A

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i
NOTE
For your own safety, observe the warnings and safety instructions contained in this document, if available.
Disclaimer of Liability
Subject to changes and errors. The information given in
this document only contains general descriptions and/or
performance features which may not always specifically
reflect those described, or which may undergo modifica-
tion in the course of further development of the products.
The requested performance features are binding only when
they are expressly agreed upon in the concluded contract.
Document version: C53000-G7040-C015-1.01.00
Edition: 11.2019
Version of the product described: V01.00
Copyright
Copyright © Siemens 2019. All rights reserved.
The disclosure, duplication, distribution and editing of this
document, or utilization and communication of the content
are not permitted, unless authorized in writing. All rights,
including rights created by patent grant or registration of a
utility model or a design, are reserved.

Preface
Purpose of the Manual
Target Audience
This manual is mainly intended for protection system engineers, commissioning engineers, persons entrusted
with the setting, testing and maintenance of automation, selective protection and control equipment, and
operational crew in electrical installations and power plants.
Scope
This manual applies to the Reyrolle 7SR54 device family.
Further Documentation
[dw_7SR5_furtherdocumentation_devicemanual, 1, en_US]
•Device manuals
Each device manual describes the functions and applications of a specific Reyrolle 7SR54 device. The
printed manual for the device has the same informational structure.
•Hardware manual
The hardware manual describes the hardware building blocks and device combinations of the Reyrolle
7SR54 device family.
•Operating manual
The operating manual describes the basic principles and procedures for operating and installing the
devices of the Reyrolle 7SR54 range.
Reyrolle 7SR5, Transformer Protection Device, Device Manual 3
C53000-G7040-C015-1, Edition 11.2019

•Communication protocol manual
The communication protocol manual contains a description of the protocols for communication within
the Reyrolle 7SR54 device family and to higher-level network control centers.
•Product information
The product information includes general information about device installation, technical data, limiting
values for input and output modules, and conditions when preparing for operation. This document is
provided with each Reyrolle 7SR54 device.
•Engineering Guide
The engineering guide describes the essential steps when engineering with Reydisp Manager 2. In addi-
tion, the engineering guide shows you how to load a planned configuration to a Reyrolle 7SR54 device
and update the functionality of the Reyrolle 7SR54 device.
•Virtual Relay
The virtual relay allows a user to view, control and manipulate a virtual 7SR54 device. The virtual relay is
a tool that can facilitate training and understanding of the controls and functions on a Reyrolle 7SR54
device.
•Reyrolle 7SR54 catalog
The Reyrolle 7SR54 catalog describes the system features and the devices of Reyrolle 7SR54.
•Selection guide for Reyrolle and SIPROTEC
The selection guide offers an overview of the device series of the Siemens protection devices, and a
device selection table.
Indication of Conformity
This product is CE-compliant to relevant EU directives.
Additional Support
For questions about the system, contact your Siemens sales partner.
Customer Support Center
Our Customer Support Center provides a 24-hour service.
Siemens AG
Customer Support Center
Humboldtstrasse 59
90459 Nuremberg
Germany
E-mail: [email protected]
Training Courses
Inquiries regarding individual training courses should be addressed to our Training Center:
Siemens AG Phone: [phone]
Siemens Power Academy TD Fax: [phone]
Humboldtstrasse 59 E-mail: [email protected]
90459 Nuremberg Internet: www.siemens.com/poweracademy
Germany
Notes on Safety
This document is not a complete index of all safety measures required for operation of the equipment (module
or device). However, it comprises important information that must be followed for personal safety, as well as
to avoid material damage. Information is highlighted and illustrated as follows according to the degree of
danger:
Preface
4 Reyrolle 7SR5, Transformer Protection Device, Device Manual
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!
DANGER
DANGER means that death or severe injury will result if the measures specified are not taken.
²Comply with all instructions, in order to avoid death or severe injuries.
!
WARNING
WARNING means that death or severe injury may result if the measures specified are not taken.
²Comply with all instructions, in order to avoid death or severe injuries.
!
CAUTION
CAUTION means that medium-severe or slight injuries can occur if the specified measures are not taken.
²Comply with all instructions, in order to avoid moderate or minor injuries.
NOTICE
NOTICE means that property damage can result if the measures specified are not taken.
²Comply with all instructions, in order to avoid property damage.
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NOTE
Important information about the product, product handling or a certain section of the documentation
which must be given attention.
Qualified Electrical Engineering Personnel
Only qualified electrical engineering personnel may commission and operate the equipment (module, device)
described in this document. Qualified electrical engineering personnel in the sense of this manual are people
who can demonstrate technical qualifications as electrical technicians. These persons may commission,
isolate, ground and label devices, systems and circuits according to the standards of safety engineering.
Proper Use
The equipment (device, module) may be used only for such applications as set out in the catalogs and the
technical description, and only in combination with third-party equipment recommended and approved by
Siemens.
Problem-free and safe operation of the product depends on the following:
•Proper transport
•Proper storage, setup and installation
•Proper operation and maintenance
When electrical equipment is operated, hazardous voltages are inevitably present in certain parts. If proper
action is not taken, death, severe injury or property damage can result:
•The equipment must be grounded at the grounding terminal before any connections are made.
•All circuit components connected to the power supply may be subject to dangerous voltage.
Preface
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•Hazardous voltages may be present in equipment even after the supply voltage has been disconnected
(capacitors can still be charged).
•Operation of equipment with exposed current-transformer circuits is prohibited. Before disconnecting the
equipment, ensure that the current-transformer circuits are short-circuited.
•The limiting values stated in the document must not be exceeded. This must also be considered during
testing and commissioning.
•Terminals are exposed when the device element is removed from the case.
Preface
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Open Source Software
The product contains, among other things, Open Source Software developed by third parties. The Open
Source Software used in the product and the license agreements concerning this software can be found in the
Readme_OSS. These Open Source Software files are protected by copyright. Your compliance with those
license conditions will entitle you to use the Open Source Software as foreseen in the relevant license. In the
event of conflicts between Siemens license conditions and the Open Source Software license conditions, the
Open Source Software conditions shall prevail with respect to the Open Source Software portions of the soft-
ware. The Open Source Software is licensed royalty-free. Insofar as the applicable Open Source Software
License Conditions provide for it you can order the source code of the Open Source Software from your
Siemens sales contact – against payment of the shipping and handling charges – for a period of at least 3
years after purchase of the product. We are liable for the product including the Open Source Software
contained in it pursuant to the license conditions applicable to the product. Any liability for the Open Source
Software beyond the program flow intended for the product is explicitly excluded. Furthermore any liability
for defects resulting from modifications to the Open Source Software by you or third parties is excluded. We
do not provide any technical support for the product if it has been modified.
The ReadmeOSS documents for the product can be found here: Siemens.com/Reyrolle
Reyrolle 7SR5, Transformer Protection Device, Device Manual 7
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Table of Contents
Preface..........................................................................................................................................................3
Open Source Software..................................................................................................................................7
1 Introduction ...............................................................................................................................................19
2 Basic Structure of the Device Functionality............................................................................................... 25
2.1 Introduction......................................................................................................................26
2.2 Analogue Inputs................................................................................................................27
2.3 Function Groups and Function Elements........................................................................... 29
2.4 Device Startup.................................................................................................................. 33
2.5 Real Time Clock.................................................................................................................35
3 Device Functionality .................................................................................................................................. 39
3.1 Device Fascia ................................................................................................................... 40
3.1.1 Overview of Functions.................................................................................................40
3.1.2 Indications and Instruments.........................................................................................42
3.1.3 Reading Indications using Reydisp................................................................................45
3.2 Device Configuration ........................................................................................................46
3.2.1 Overview of Functions.................................................................................................46
3.2.2 Structure of the Function.............................................................................................46
3.2.3 Logic of the Function...................................................................................................46
3.2.4 Application and Setting Notes......................................................................................46
3.2.5 Settings Menu............................................................................................................. 53
3.2.6 IEC 61850 Functional Information Mapping................................................................. 55
3.3 CT and VT Inputs .............................................................................................................. 57
3.3.1 Overview of Functions.................................................................................................57
3.3.2 Structure of the Function.............................................................................................57
3.3.3 Application and Setting Notes......................................................................................57
3.3.4 Settings Menu............................................................................................................. 64
3.4 Binary Inputs ....................................................................................................................65
3.4.1 Overview of Functions.................................................................................................65
3.4.2 Structure of the Function.............................................................................................65
3.4.3 Logic of the Function...................................................................................................66
3.4.4 Application and Setting Notes......................................................................................68
3.4.5 Settings Menu............................................................................................................. 73
3.4.6 IEC 61850 Functional Information Mapping ................................................................ 75
3.5 Binary Outputs ................................................................................................................. 77
3.5.1 Overview of Functions.................................................................................................77
3.5.2 Structure of the Function.............................................................................................77
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3.5.3 Logic of the Function...................................................................................................78
3.5.4 Application and Setting Notes......................................................................................81
3.5.5 Settings Menu............................................................................................................. 84
3.5.6 IEC 61850 Functional Information Mapping ................................................................ 87
3.6 Data Storage .................................................................................................................... 94
3.6.1 Demand Data Log........................................................................................................94
3.6.2 Waveform Storage.....................................................................................................112
3.6.3 Fault Storage.............................................................................................................114
3.6.4 Energy Storage..........................................................................................................117
3.6.5 Event Log.................................................................................................................. 119
3.7 Data Communications .................................................................................................... 121
3.7.1 Overview of Functions...............................................................................................121
3.7.2 Structure of the Function...........................................................................................121
3.7.3 Application and Setting Notes....................................................................................122
3.7.4 Settings Menu........................................................................................................... 123
3.8 Quick Logic .................................................................................................................... 127
3.8.1 Overview of Functions...............................................................................................127
3.8.2 Structure of the Function...........................................................................................127
3.8.3 Logic of the Function.................................................................................................128
3.8.4 Application and Setting Notes....................................................................................128
3.8.5 Settings Menu........................................................................................................... 130
3.8.6 IEC 61850 Functional Information Mapping .............................................................. 130
4 7SR54 Function Templates ...................................................................................................................... 133
4.1 Introduction....................................................................................................................134
4.2 Function Groups and Function Elements......................................................................... 135
4.3 Function Configuration .................................................................................................. 139
4.3.1 Overview of the Function.......................................................................................... 139
4.3.2 Structure of the Function...........................................................................................139
4.3.3 Logic of the Function.................................................................................................139
4.3.4 Application and Setting Notes....................................................................................139
4.3.5 Settings Menu........................................................................................................... 139
4.3.6 Information List.........................................................................................................141
5 Protection and Automation Functions .....................................................................................................143
5.1 21LB Load Blinder .......................................................................................................... 144
5.1.1 Overview of Function................................................................................................ 144
5.1.2 Structure of the Function...........................................................................................144
5.1.3 Logic of the Function.................................................................................................144
5.1.4 Application and Setting Notes....................................................................................145
5.1.5 Settings Menu........................................................................................................... 148
5.1.6 Information List.........................................................................................................149
5.2 24 Overexcitation Protection...........................................................................................150
5.2.1 Overview of Function................................................................................................ 150
5.2.2 Structure of the Function...........................................................................................150
5.2.3 Logic of the Function.................................................................................................151
5.2.4 Application and Setting Notes....................................................................................152
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5.2.5 Settings Menu........................................................................................................... 154
5.2.6 IEC 61850 Functional Information Mapping .............................................................. 155
5.2.7 Information List.........................................................................................................157
5.3 27 Undervoltage Protection – 3-Phase ............................................................................ 158
5.3.1 Overview of Function................................................................................................ 158
5.3.2 Structure of the Function...........................................................................................158
5.3.3 Logic of the Function.................................................................................................159
5.3.4 Application and Setting Notes....................................................................................159
5.3.5 Settings Menu........................................................................................................... 162
5.3.6 IEC 61850 Functional Information Mapping .............................................................. 163
5.3.7 Information List.........................................................................................................164
5.4 27Vx Undervoltage Protection – Vx ................................................................................ 165
5.4.1 Overview of Function................................................................................................ 165
5.4.2 Structure of the Function...........................................................................................165
5.4.3 Logic of the Function.................................................................................................166
5.4.4 Application and Setting Notes....................................................................................166
5.4.5 Settings Menu........................................................................................................... 168
5.4.6 IEC 61850 Functional Information Mapping .............................................................. 169
5.4.7 Information List.........................................................................................................170
5.5 37 Undercurrent Protection – Phase ............................................................................... 171
5.5.1 Overview of Functions...............................................................................................171
5.5.2 Structure of the Function...........................................................................................171
5.5.3 Logic of the Function.................................................................................................172
5.5.4 Application and Setting Notes....................................................................................172
5.5.5 Settings Menu........................................................................................................... 173
5.5.6 IEC 61850 Functional Information Mapping .............................................................. 174
5.5.7 Information List.........................................................................................................175
5.6 37G Undercurrent Earth Fault – Measured.......................................................................177
5.6.1 Overview of Functions...............................................................................................177
5.6.2 Structure of the Function...........................................................................................177
5.6.3 Logic of the Function.................................................................................................177
5.6.4 Application and Setting Notes....................................................................................177
5.6.5 Settings Menu........................................................................................................... 178
5.6.6 IEC 61850 Functional Information Mapping .............................................................. 178
5.6.7 Information List.........................................................................................................179
5.7 46 Negative-Sequence Overcurrent Protection.................................................................180
5.7.1 Overview of Functions...............................................................................................180
5.7.2 Structure of the Function...........................................................................................180
5.7.3 Logic of the Function.................................................................................................181
5.7.4 Application and Setting Notes....................................................................................181
5.7.5 Settings Menu........................................................................................................... 184
5.7.6 IEC 61850 Functional Information Mapping .............................................................. 185
5.7.7 Information List.........................................................................................................187
5.8 46BC Broken Conductor Detection...................................................................................188
5.8.1 Overview of Functions...............................................................................................188
5.8.2 Structure of the Function...........................................................................................188
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5.8.3 Logic of the Function.................................................................................................189
5.8.4 Application and Setting Notes....................................................................................189
5.8.5 Settings Menu........................................................................................................... 190
5.8.6 IEC 61850 Functional Information Mapping .............................................................. 191
5.8.7 Information List.........................................................................................................192
5.9 47 Sequence Overvoltage Protection...............................................................................193
5.9.1 Overview of Function................................................................................................ 193
5.9.2 Structure of the Function...........................................................................................193
5.9.3 Logic of the Function.................................................................................................194
5.9.4 Application and Setting Notes....................................................................................194
5.9.5 Settings Menu........................................................................................................... 196
5.9.6 IEC 61850 Functional Information Mapping .............................................................. 197
5.9.7 Information List.........................................................................................................198
5.10 49 Thermal Overload Protection...................................................................................... 199
5.10.1 Overview of Function................................................................................................ 199
5.10.2 Structure of the Function...........................................................................................199
5.10.3 Logic of the Function.................................................................................................200
5.10.4 Application and Setting Notes....................................................................................200
5.10.5 Settings Menu........................................................................................................... 201
5.10.6 IEC 61850 Functional Information Mapping .............................................................. 202
5.10.7 Information List.........................................................................................................203
5.11 50 Instantaneous Overcurrent – Phase............................................................................ 204
5.11.1 Overview of Functions...............................................................................................204
5.11.2 Structure of the Function...........................................................................................204
5.11.3 Logic of the Function.................................................................................................205
5.11.4 Application and Setting Notes....................................................................................206
5.11.5 Settings Menu........................................................................................................... 209
5.11.6 IEC 61850 Functional Information Mapping .............................................................. 210
5.11.7 Information List.........................................................................................................213
5.12 50G Instantaneous Earth Fault – Measured......................................................................214
5.12.1 Overview of Functions...............................................................................................214
5.12.2 Structure of the Function...........................................................................................214
5.12.3 Logic of the Function.................................................................................................215
5.12.4 Application and Setting Notes....................................................................................216
5.12.5 Settings Menu........................................................................................................... 218
5.12.6 IEC 61850 Functional Information Mapping .............................................................. 219
5.12.7 Information List.........................................................................................................220
5.13 50N Instantaneous Earth Fault – Calculated.....................................................................221
5.13.1 Overview of Functions...............................................................................................221
5.13.2 Structure of the Function...........................................................................................221
5.13.3 Logic of the Function.................................................................................................222
5.13.4 Application and Setting Notes....................................................................................223
5.13.5 Settings Menu........................................................................................................... 225
5.13.6 IEC 61850 Functional Information Mapping .............................................................. 225
5.13.7 Information List.........................................................................................................227
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5.14 51 Time-Delayed Overcurrent – Phase............................................................................. 228
5.14.1 Overview of Function................................................................................................ 228
5.14.2 Structure of the Function...........................................................................................228
5.14.3 Logic of the Function.................................................................................................230
5.14.4 Application and Setting Notes....................................................................................231
5.14.5 Settings Menu........................................................................................................... 240
5.14.6 IEC 61850 Functional Information Mapping .............................................................. 242
5.14.7 Information List.........................................................................................................245
5.15 51G Time-Delayed Earth Fault – Measured...................................................................... 246
5.15.1 Overview of Functions...............................................................................................246
5.15.2 Structure of the Function...........................................................................................246
5.15.3 Logic of the Function.................................................................................................247
5.15.4 Application and Setting Notes....................................................................................248
5.15.5 Settings Menu........................................................................................................... 252
5.15.6 IEC 61850 Functional Information Mapping .............................................................. 253
5.15.7 Information List.........................................................................................................254
5.16 51N Time-Delayed Earth Fault – Calculated..................................................................... 255
5.16.1 Overview of Function................................................................................................ 255
5.16.2 Structure of the Function...........................................................................................255
5.16.3 Logic of the Function.................................................................................................256
5.16.4 Application and Setting Notes....................................................................................257
5.16.5 Settings Menu........................................................................................................... 260
5.16.6 IEC 61850 Functional Information Mapping .............................................................. 261
5.16.7 Information List.........................................................................................................263
5.17 59N Neutral Voltage Displacement..................................................................................264
5.17.1 Overview of Functions...............................................................................................264
5.17.2 Structure of the Function...........................................................................................264
5.17.3 Logic of the Function.................................................................................................265
5.17.4 Application and Setting Notes....................................................................................266
5.17.5 Settings Menu........................................................................................................... 267
5.17.6 IEC 61850 Functional Information Mapping .............................................................. 268
5.17.7 Information List.........................................................................................................270
5.18 59Vx Overvoltage Protection – Vx................................................................................... 271
5.18.1 Overview of Function................................................................................................ 271
5.18.2 Structure of the Function...........................................................................................271
5.18.3 Logic of the Function.................................................................................................272
5.18.4 Application and Setting Notes....................................................................................272
5.18.5 Settings Menu........................................................................................................... 273
5.18.6 IEC 61850 Functional Information Mapping .............................................................. 273
5.18.7 Information List.........................................................................................................274
5.19 67 Directional Overcurrent/Earth Fault.............................................................................275
5.19.1 Overview of Functions...............................................................................................275
5.19.2 Structure of the Function...........................................................................................275
5.19.3 Logic of the Function.................................................................................................276
5.19.4 Application and Setting Notes....................................................................................277
5.19.5 Settings Menu........................................................................................................... 286
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5.19.6 Information List.........................................................................................................287
5.20 81 Frequency Protection – "f>" or "f<"..............................................................................288
5.20.1 Overview of Functions...............................................................................................288
5.20.2 Structure of the Function...........................................................................................288
5.20.3 Logic of the Function.................................................................................................289
5.20.4 Application and Setting Notes....................................................................................289
5.20.5 Settings Menu........................................................................................................... 292
5.20.6 IEC 61850 Functional Information Mapping .............................................................. 292
5.20.7 Information List.........................................................................................................294
5.21 87GH Restricted Earth-Fault Protection – High-Impedance............................................... 296
5.21.1 Overview of Functions...............................................................................................296
5.21.2 Structure of the Function...........................................................................................296
5.21.3 Logic of the Function.................................................................................................296
5.21.4 Application and Setting Notes....................................................................................297
5.21.5 Settings Menu........................................................................................................... 304
5.21.6 IEC 61850 Functional Information Mapping .............................................................. 304
5.21.7 Information List.........................................................................................................305
5.22 87T Transformer Differential Protection...........................................................................307
5.22.1 Overview of Functions...............................................................................................307
5.22.2 Structure of the Function...........................................................................................307
5.22.3 Logic of the Function.................................................................................................310
5.22.4 Application and Setting Notes....................................................................................313
5.22.5 Settings Menu........................................................................................................... 330
5.22.6 IEC 61850 Functional Information Mapping .............................................................. 332
5.22.7 Information List.........................................................................................................336
6 Supervision Functions ............................................................................................................................. 339
6.1 50BF Circuit-Breaker Failure Protection – 3 Pole............................................................... 340
6.1.1 Overview of Functions...............................................................................................340
6.1.2 Structure of the Function...........................................................................................340
6.1.3 Logic of the Function.................................................................................................341
6.1.4 Application and Setting Notes....................................................................................341
6.1.5 Settings Menu........................................................................................................... 343
6.1.6 IEC 61850 Functional Information Mapping .............................................................. 343
6.1.7 Information List.........................................................................................................344
6.2 60CTS CT Supervision......................................................................................................346
6.2.1 Overview of Functions...............................................................................................346
6.2.2 Structure of the Function...........................................................................................346
6.2.3 Logic of the Function.................................................................................................347
6.2.4 Application and Setting Notes....................................................................................348
6.2.5 Settings Menu........................................................................................................... 349
6.2.6 Information List.........................................................................................................350
6.3 60VTS VT Supervision......................................................................................................351
6.3.1 Overview of Functions...............................................................................................351
6.3.2 Structure of the Function...........................................................................................351
6.3.3 Logic of the Function.................................................................................................352
6.3.4 Application and Setting Notes....................................................................................352
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6.3.5 Settings Menu........................................................................................................... 354
6.3.6 Information List.........................................................................................................354
6.4 74CC Close-Circuit Supervision........................................................................................ 355
6.4.1 Overview of Functions...............................................................................................355
6.4.2 Structure of the Function...........................................................................................355
6.4.3 Logic of the Function.................................................................................................356
6.4.4 Application and Setting Notes....................................................................................356
6.4.5 Settings Menu........................................................................................................... 358
6.4.6 Information List.........................................................................................................359
6.5 74TC Trip-Circuit Supervision...........................................................................................360
6.5.1 Overview of Functions...............................................................................................360
6.5.2 Structure of the Function...........................................................................................360
6.5.3 Logic of the Function.................................................................................................361
6.5.4 Application and Setting Notes....................................................................................361
6.5.5 Settings Menu........................................................................................................... 363
6.5.6 Information List.........................................................................................................364
6.6 81HB2 Inrush Current Detection......................................................................................365
6.6.1 Overview of Functions...............................................................................................365
6.6.2 Structure of the Function...........................................................................................365
6.6.3 Logic of the Function.................................................................................................365
6.6.4 Application and Setting Notes....................................................................................365
6.6.5 Settings Menu........................................................................................................... 367
6.6.6 IEC 61850 Functional Information Mapping .............................................................. 367
6.6.7 Information List.........................................................................................................368
7 Control Functions..................................................................................................................................... 369
7.1 Device Control Functions.................................................................................................370
7.1.1 Overview of Functions...............................................................................................370
7.1.2 Structure of the Function...........................................................................................370
7.1.3 IEC 61850 Functional Information Mapping............................................................... 373
7.2 52 Circuit-Breaker Control............................................................................................... 381
7.2.1 Overview of Function................................................................................................ 381
7.2.2 Structure of the Function...........................................................................................381
7.2.3 Logic of the Function.................................................................................................382
7.2.4 Application and Setting Notes....................................................................................383
7.2.5 Settings Menu........................................................................................................... 387
7.2.6 IEC 61850 Functional Information Mapping .............................................................. 388
7.2.7 Information List.........................................................................................................391
8 Instruments and Meters........................................................................................................................... 393
8.1 Introduction....................................................................................................................394
8.2 Instruments.................................................................................................................... 395
8.3 Notes..............................................................................................................................402
9 Functional Tests........................................................................................................................................403
9.1 General Notes................................................................................................................. 404
9.2 Hardware Measurement Tests......................................................................................... 406
9.3 Functional Test for the Phase-Rotation Direction..............................................................408
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9.4 Direction Test of the Phase Quantities (Current and Voltage Connection) ........................ 409
9.5 Direction Test of the Earth Quantities for Directional Earth-Fault Functions...................... 410
9.6 Circuit‑Breaker Test......................................................................................................... 413
9.7 Primary and Secondary Tests of the Circuit‑Breaker Failure Protection.............................. 414
9.8 Configuration Tests for Transformer Differential Protection..............................................415
9.9 Restricted Earth Fault Protection......................................................................................420
9.10 Protection Functional Tests............................................................................................. 421
9.10.1 21LB Load Blinder......................................................................................................421
9.10.2 24 Overexcitation Protection..................................................................................... 422
9.10.3 27 Undervoltage Protection – 3 Phase........................................................................423
9.10.4 27Vx Undervoltage Protection – Vx............................................................................424
9.10.5 37 Undercurrent Protection – Phase...........................................................................425
9.10.6 37G Undercurrent Earth Fault – Measured................................................................. 426
9.10.7 46 Negative Sequence Overcurrent Protection........................................................... 426
9.10.8 46BC Broken Conductor Detection............................................................................. 428
9.10.9 47 Sequence Overvoltage Protection......................................................................... 429
9.10.10 49 Thermal Overload Protection.................................................................................430
9.10.11 50/51 Phase Overcurrent........................................................................................... 430
9.10.12 50G/51G Measured Earth Fault.................................................................................. 433
9.10.13 50N/51N Calculated Earth Fault................................................................................. 435
9.10.14 51CL Cold Load Overcurrent – Phase..........................................................................438
9.10.15 51V Voltage Dependent Overcurrent – Phase............................................................. 440
9.10.16 59 Overvoltage Protection – 3 Phase..........................................................................441
9.10.17 59N Neutral Voltage Displacement............................................................................ 441
9.10.18 59Vx Overvoltage Protection – Vx..............................................................................442
9.10.19 67 Directional Overcurrent – Phase............................................................................ 443
9.10.20 67G/67GS/67N Directional Earth Fault........................................................................445
9.10.21 81 Frequency Protection – "f>" or "f<"........................................................................ 446
9.10.22 87GH Restricted Earth Fault Protection – High-Impedance..........................................446
9.10.23 87T Transformer Differential Protection – Biased........................................................447
9.11 Supervision Functions .................................................................................................... 451
9.11.1 50BF Circuit-Breaker Failure Protection – 3 Pole......................................................... 451
9.11.2 60CTS CT Supervision................................................................................................ 451
9.11.3 60VTS VT Supervision................................................................................................ 452
9.11.4 74CC/74TC Close/Trip Circuit Supervision................................................................... 453
9.11.5 81HB2 Inrush Current Detection................................................................................ 453
9.12 Control and Logic Functions............................................................................................ 454
9.12.1 Quick Logic................................................................................................................454
10 Technical Data.......................................................................................................................................... 455
10.1 General Device Data........................................................................................................456
10.1.1 Instrumentation........................................................................................................ 456
10.2 21LB Load Blinder .......................................................................................................... 457
10.2.1 3 Phase Load Blinder (21LB‑3P)..................................................................................457
10.2.2 Single Phase Load Blinder (21LB‑1P)...........................................................................457
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10.3 24 Overexcitation Protection...........................................................................................459
10.3.1 Common Settings......................................................................................................459
10.3.2 Definite Time Element (24DT)....................................................................................459
10.3.3 Inverse Time Element (24IT)...................................................................................... 459
10.4 27 Undervoltage Protection – 3-Phase ............................................................................ 461
10.4.1 Common Settings......................................................................................................461
10.4.2 Undervoltage Protection............................................................................................ 461
10.5 27Vx Undervoltage Protection – Vx ................................................................................ 462
10.5.1 Common Settings......................................................................................................462
10.5.2 Undervoltage Protection............................................................................................ 462
10.6 37 Undercurrent Protection – Phase ............................................................................... 463
10.6.1 Common Settings......................................................................................................463
10.6.2 Undercurrent Protection............................................................................................ 463
10.7 37G Undercurrent Earth Fault – Measured.......................................................................464
10.8 46 Negative-Sequence Overcurrent Protection.................................................................465
10.8.1 Definite Time Element (46DT)....................................................................................465
10.8.2 Inverse Time Element (46IT)...................................................................................... 465
10.9 46BC Broken Conductor Detection...................................................................................467
10.9.1 Common Settings......................................................................................................467
10.9.2 Broken Conductor Detection...................................................................................... 467
10.10 47 Sequence Overvoltage Protection...............................................................................468
10.10.1 Common Settings......................................................................................................468
10.10.2 Overvoltage Protection.............................................................................................. 468
10.11 49 Thermal Overload Protection...................................................................................... 470
10.12 50 Instantaneous Overcurrent – Phase............................................................................ 473
10.13 50BF Circuit-Breaker Failure Protection – 3 Pole............................................................... 474
10.13.1 50BF Circuit‑Breaker Failure Protection – 3 Pole......................................................... 474
10.13.2 50BF‑I4 Circuit‑Breaker Failure Protection – 3 Pole......................................................475
10.14 50G Instantaneous Earth Fault – Measured......................................................................477
10.15 50N Instantaneous Earth Fault – Calculated.....................................................................478
10.16 51 Time-Delayed Overcurrent – Phase............................................................................. 479
10.17 51G Time-Delayed Earth Fault – Measured...................................................................... 481
10.18 51N Time-Delayed Earth Fault – Calculated..................................................................... 483
10.19 51V Voltage-Dependent Overcurrent – Phase.................................................................. 485
10.20 59N Neutral Voltage Displacement..................................................................................486
10.20.1 Common Settings......................................................................................................486
10.20.2 Definite Time Element (59NDT)................................................................................. 486
10.20.3 Inverse Time Element (59NIT)....................................................................................486
10.21 59Vx Overvoltage Protection – Vx................................................................................... 488
10.22 60CTS‑I CT Supervision – Current Reference.................................................................... 489
10.23 60VTS VT Supervision......................................................................................................490
10.24 67 Directional Overcurrent – Phase................................................................................. 491
10.25 67G Directional Earth Fault – Measured...........................................................................492
10.26 67GS Directional Sensitive Earth Fault – Measured.......................................................... 493
10.27 67N Directional Earth Fault – Calculated..........................................................................494
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10.28 81 Frequency Protection – "f>" or "f<"..............................................................................495
10.29 81HB2 Inrush Current Detection......................................................................................496
10.30 81HB5 Overfluxing Detection – 5th Harmonic................................................................. 497
10.31 87GH Restricted Earth-Fault Protection – High-Impedance............................................... 498
10.32 87T‑BD Transformer Differential Protection – Biased........................................................ 499
10.32.1 Common Settings......................................................................................................499
10.32.2 Transformer Differential Protection - Biased............................................................... 499
10.33 87T‑HS Transformer Differential Protection – Highset...................................................... 500
10.33.1 Common Settings......................................................................................................500
10.33.2 Transformer Differential Protection - Highset............................................................. 500
A Appendix.................................................................................................................................................. 501
A.1 Ordering Information...................................................................................................... 502
A.2 Current Transformer Connections....................................................................................503
A.3 Voltage Transformer Connections....................................................................................504
Table of Contents
18 Reyrolle 7SR5, Transformer Protection Device, Device Manual
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Introduction
7SR5 Devices
This manual is applicable to the following relays:
•7SR542 series
•7SR543 series
[sc_7SR5_size12_FrontPhoto, 1, --_--]
!
CAUTION
Current Transformer Circuits
²The secondary circuit of a live CT must not be open circuited. Non-observance of this precaution can
result in injury to personnel or damage to equipment.
1
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!
CAUTION
External Resistors
²Where external resistors are fitted to relays, these may present a danger of electric shock or burns, if
touched.
!
CAUTION
Fibre Optic Communication
²Where fibre optic communication devices are fitted, these should not be viewed directly. Optical
power meters should be used to determine the operation or signal level of the device.
!
CAUTION
Front Fascia
²For safety reasons the following symbols are displayed on the device.
²
Dielectric Test Voltage 2 kV
²
Impulse Test Above 5 kV
²
Caution: Refer to Equipment Documentation
²
Caution: Risk of Electric Shock
Modular Concept
The 7SR5 platform is common to a number of devices and so ensures the consistency and integrity of all func-
tionalities across the device series:
•Modular system design in hardware, software, and communication
•Functional integration of various applications, such as protection, control, and fault recorder
•Consistent functionality across the entire family of devices
•Upgrade path using software libraries and updates
•Flexible hardware architecture
•Self-monitoring routines for device faults
General Properties
•Fully digital measured-value processing and control, from sampling and digitizing of measurands to
closing and tripping decisions for the circuit‑breaker.
•Complete galvanic and interference-free isolation of the internal processing circuits from the system
measuring, control, and supply circuits through instrument transformers, binary inputs, binary outputs
and DC/AC voltage converters.
Introduction
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