Siemens SIPROTEC 7UM62 User manual

SIPROTEC
Multifunction Generator,
Motor and Transformer
Protection Relay
7UM62
V4.1
Manual
C53000-G1176-C149-3
Preface
Table of Contents
Introduction 1
Functions 2
Installation and Commissioning 3
Technical Data 4
Appendix A
Index

Siemens Aktiengesellschaft Manual No. C53000-G1176-C149-3
Liability Statement
We have checked the text of this manual against the
hardware and software described. Exclusions and de-
viations cannot be ruled out; we accept no liability for
lack of total agreement.
The information in this manual is checked periodically,
and necessary corrections will be included in future
editions. We appreciate any suggested improvements.
We reserve the right to make technical improvements
without notice.
Release V4.10.01
Copyright
Copyright © Siemens AG 2002. All rights reserved.
Dissemination or reproduction of this document, or evalu-
ation and communication of its contents, is not authorized
except where expressly permitted. Violations are liable for
damages. All rights reserved, particularly for the purposes
of patent application or trademark registration.
Registered trademarks
SIPROTEC, SIMATIC®,SIMATICNET®,SINAUT®,SI-
CAM®, and DIGSI®are registered trademarks of Siemens
AG. Other designations in this manual may be trademarks
that if used by third parties for their own purposes may vi-
olate the rights of the owner.

i7UM62 Manual
C53000-G1176-C149-3
Preface
Purpose of This
Manual This manual describes the functions, operation, installation, and placing into service of the device. In particular, one will find:
•Information regarding customizing of the device and descriptions of device
functions and settings →Chapter 2;
•Instructions for mounting and commissioning →Chapter 3;
•Instructions for mounting and commissioning →Chapter 4;
•As well as a compilation of the most significant data for experienced users in the
Appendix A.
For general information on the operation and configuration of SIPROTEC®4 devices,
please refer to theSIPROTEC®4 System Manual (Order No.: E50417–H1176–C151).
Target Audience Protection engineers, commissioning engineers, personnel concerned with
adjustment, checking, and service of selective protective equipment, automatic and
control facilities, and personnel of electrical facilities and power plants.
Applicability of
This Manual This manual is valid for: SIPROTEC®4 7UM62 Multifunction Generator, Motor and
Transformer Protections; firmware version 4.1.
This product is UL–certified with the data as stated in Section 4.1:
Indication of Conformity
This product complies with the directive of the Council of the European Communities
on the approximation of the laws of the member states relating to electromagnetic
compatibility (EMC Council Directive 89/336/EEC) and concerning electrical
equipment for use within certain voltage limits (Low-voltage Directive 73/23/EEC).
This conformity is proved by tests conducted by Siemens AG in accordance with
Article 10 of the Council Directive in agreement with the generic standards EN 50081
and EN 50082 for EMC directive, and with the standard EN 60255–6 for the low-
voltage directive.
The product conforms with the international standard of the series IEC 60255 and the
German standard DIN 57435 /Part 303 (corresponds to VDE 0435/Part 303).
IND. CONT. EQ.
TYPE 1
69CA
IND. CONT. EQ.
TYPE 1

Preface
ii 7UM62 Manual
C53000-G1176-C149-3
Additional Support For questions regarding SIPROTEC®4 devices, please contact your Siemens
representative.
Training Courses Individual course offerings may be found in our Training Catalog, or questions can be
directed to our training center. Please contact your Siemens representative.
Instructions and
Warnings The following indicators and standard definitions are used:
DANGER
means that death, severe personal injury, or considerable equipment damage will
occur if safety precautions are disregarded.
WARNING
means that death, severe personal injury, or considerable equipment damage will
occur if safety precautions are disregarded.
Caution
means that death, severe personal injury, or considerable equipment damage will
occur if safety precautions are disregarded. This manual describes the functions,
operation, installation, and placing into service of the device.
Instruction
is an important piece of information regarding the product or the part of the manual
that deserves special attention.
QUALIFIED PERSONNEL
Prerequisites to proper and safe operation of this product are proper transport, proper
storage, setup, installation, operation, and maintenance of the product, as well as
careful operation and servicing of the device within the scope of the warnings and
instructions of this manual.
GTraining and instruction (or other qualification) for switching, grounding, and
designating devices and systems.
GTraining and instruction (or other qualification) for switching, grounding, and
designating devices and systems.
GFirst aid training.
WARNING
During operation of electrical equipment, certain parts of these devices are under high
voltage. Severe personal injury or significant equipment damage could result from
improper behavior.
Only qualified personnel should work on this equipment or in the vicinity of this
equipment. These personnel must be familiar with all warnings and service
procedures described in this manual, as well as with safety regulations.
Prerequisites to proper and safe operation of this product are proper transport, proper
storage, setup, installation, operation, and maintenance of the product, as well as
careful operation and servicing of the device within the scope of the warnings and
instructions of this manual.
In particular, the general facility and safety regulations for work with high-voltage
equipment (e.g. ANSI, IEC, EN, or other national or international regulations) must be
observed. Noncompliance may result in death, injury, or significant equipment
damage.

Preface
iii
7UM62 Manual
C53000-G1176-C149-3
Typographic and
Graphical
Conventions
The following text formats are used to identify concepts giving device information
described by the text flow:
Parameter names, or identifiers for configuration or function parameters that appear
in the device display or on the screen of a PC (with DIGSI®4) are shown in mono-
script (same point size) bold text. This also applies to header bars for selection menus.
Parameter conditions,or possible settings of parameters that appear in the
device display or on the screen of a PC (with DIGSI®4), are additionally shown in italic
style. This also applies to header bars for selection menus.
“Annunciations”, or identifiers for information produced by the device or required
by other devices or from the switch-gear is shown in mono-script (same point size) and
placed into quotation marks.
For diagrams in which the identifier type results from the representation itself, text
conventions may differ from the above-mentioned.
The following symbols are used in diagrams:
possible conditions On and Off
IL1
GND Fault device-internal (logical) input signal
GND Fault device-internal (logical) input signal
internal input signal of an analog quantity
>Release
Dev. Trip
external binary input signal with function number F# (binary input,
On
Off
1234 FUNCTION
Parameter address
Parameter name
Parameter Conditions
example of a parameter switch FUNCTION with address 1234 and
F#
F# external binary input signal with function number F# (binary input,
from device)
respective annunciation to the device)
Input signal of an analog quantity
≥1
&
OR gate
AND gate
Signal inversion
OR

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iv 7UM62 Manual
C53000-G1176-C149-3
n
I2>
1706 I2>>
0T
S
R
Q
Input signals of dynamic quantity
Formation of one output signal from a number
of analog inputs
Timer (dropout delayed)
Limit stage with parameter address and
TDynamic triggered pulse timer (monoflop)
Static memory (RS–flipflop) with setting input (S),
=1 Exclusive–OR gate: output is active, if only one
of the inputs is active
=Coincidence gate: output is active, if both inputs
are active simultaneously
0T
1706 T I2>>
Timer (pick up delayed) with parameter address
and designator
resetting input (R), output (Q) and inverted
Q
designator
output (Q)

v7UM62 Manual
C53000-G1176-C149-3
Table of Contents
1 Introduction.......................................................................................................................................... 1
1.1 Overall Operation ................................................................................................................... 2
1.2 Applications............................................................................................................................ 5
1.3 Features ................................................................................................................................. 7
2 Functions............................................................................................................................................ 13
2.1 Introduction, Reference Power System................................................................................ 16
2.2 Functional Scope.................................................................................................................. 18
2.2.1 Description ........................................................................................................................... 18
2.2.2 Setting Hints......................................................................................................................... 18
2.2.2.1 Settings .............................................................................................................................. 23
2.3 Power System Data 1........................................................................................................... 27
2.3.1 Functional Description.......................................................................................................... 27
2.3.2 Setting Hints......................................................................................................................... 27
2.3.2.1 Settings 1 ............................................................................................................................. 33
2.3.2.2 List of Information ................................................................................................................ 34
2.4 Setting Groups ..................................................................................................................... 35
2.4.1 Functional Description.......................................................................................................... 35
2.4.2 Setting Hints......................................................................................................................... 35
2.4.2.1 Settings ................................................................................................................................ 35
2.4.2.2 Information .......................................................................................................................... 35
2.5 Power System Data 2........................................................................................................... 36
2.5.1 Functional Description.......................................................................................................... 36
2.5.2 Setting Hints......................................................................................................................... 36
2.5.2.1 Settings ................................................................................................................................ 36
2.5.2.2 Information ........................................................................................................................... 36
2.6 Definite-Time Overcurrent Protection (I>, ANSI 50/51)
with Undervoltage Seal-In38
2.6.1 Functional Description.......................................................................................................... 38
2.6.2 Setting Hints......................................................................................................................... 39
2.6.2.1 Settings for the Definite-Time Overcurrent Protection (Stage I>)......................................... 40
2.6.2.2 Information from Definite-Time Overcurrent Protection (Stage I>)....................................... 41
2.7 Definite-Time Overcurrent Protection (I>>, ANSI 50, 51, 67)
with Direction Detection........................................................................................................ 42
2.7.1 Functional Description.......................................................................................................... 42

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2.7.2 Setting Hints ......................................................................................................................... 44
2.7.2.1 Settings for the I>> Stage of the Definite-Time Overcurrent Protection ............................... 47
2.7.2.2 Information for the I>> stage of the Definite-Time Overcurrent Protection .......................... 47
2.8 Inverse-Time Overcurrent Protection (ANSI 51V) ................................................................ 48
2.8.1 Functional Description..........................................................................................................48
2.8.2 Setting Hints ......................................................................................................................... 52
2.8.2.1 Settings of the Inverse O/C Time Protection ........................................................................53
2.8.2.2 Information for the Inverse-Time Overcurrent Protection ..................................................... 54
2.9 Thermal Overload Protection (ANSI 49)............................................................................... 55
2.9.1 Functional Description..........................................................................................................55
2.9.2 Setting Hints ......................................................................................................................... 59
2.9.2.1 Thermal Overload Protection Settings.................................................................................. 63
2.9.2.2 Information List for the Thermal Overload Protection........................................................... 64
2.10 Unbalanced Load (Negative Sequence) Protection (ANSI 46).............................................65
2.10.1 Functional Description..........................................................................................................65
2.10.2 Setting Hints ......................................................................................................................... 67
2.10.2.1 Settings of the Unbalanced Load Protection ........................................................................69
2.10.2.2 Information for the Unbalanced Load Protection.................................................................. 70
2.11 Startup Overcurrent Protection (ANSI 51)............................................................................71
2.11.1 Functional Description..........................................................................................................72
2.11.2 Setting Hints ......................................................................................................................... 72
2.11.2.1 Settings of the Startup Overcurrent Protection..................................................................... 74
2.11.2.2 Information for the Startup Overcurrent Protection............................................................... 74
2.12 Differential Protection (ANSI 87G/87M/87T).........................................................................75
2.12.1 Functional Description..........................................................................................................75
2.12.1.1 Protected Object Generator or Motor: Particularities............................................................ 77
2.12.1.2 Protected Object Transformer: Particularities....................................................................... 78
2.12.1.3 Evaluation of Measured Quantities....................................................................................... 81
2.12.2 Setting Hints ......................................................................................................................... 89
2.12.2.1 Differential Protection for Generators and Motors................................................................ 89
2.12.2.2 Differential Protection for Transformers................................................................................ 91
2.12.2.3 Settings of the Differential Protection ................................................................................... 95
2.12.2.4 Information for the Differential Protection............................................................................. 96
2.13 Earth Current Differential Protection (ANSI 87GN, TN)........................................................ 98
2.13.1 Functional Description..........................................................................................................98
2.13.2 Setting Hints .......................................................................................................................103
2.13.2.1 Settings of the Earth Current Differential Protection...........................................................105
2.13.2.2 Information for the Earth Current Differential Protection..................................................... 105
2.14 Underexcitation (Loss-of-Field) Protection (ANSI 40).........................................................106
2.14.1 Functional Description........................................................................................................ 106
2.14.2 Setting Hints .......................................................................................................................109
2.14.2.1 Settings of the Underexcitation (Loss-of-Field) Protection ................................................. 113
2.14.2.2 Information for the Underexcitation (Loss-of-Field) Protection .......................................... 114
2.15 Reverse Power Protection (ANSI 32R)............................................................................... 115
2.15.1 Functional Description........................................................................................................115
2.15.2 Setting Hints .......................................................................................................................116

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2.15.2.1 Settings of the Reverse Power Protection.......................................................................... 117
2.15.2.2 Information for the Reverse Power Protection.................................................................... 118
2.16 Forward Active Power Supervision (ANSI 32F).................................................................. 119
2.16.1 Functional Description........................................................................................................ 119
2.16.2 Setting Hints....................................................................................................................... 120
2.16.2.1 Settings of the Forward Active Power Supervision............................................................. 120
2.16.2.2 Information for the Forward Power Supervision................................................................. 121
2.17 Impedance Protection (ANSI 21)........................................................................................ 122
2.17.1 Functional Description........................................................................................................ 122
2.17.1.1 Pickup................................................................................................................................. 122
2.17.1.2 Determination of the Short–Circuit Impedance................................................................... 123
2.17.1.3 Tripping Characteristic........................................................................................................ 125
2.17.1.4 Tripping Logic..................................................................................................................... 126
2.17.2 Setting Hints....................................................................................................................... 128
2.17.3 Power Swing Blocking........................................................................................................ 131
2.17.3.1 Setting Hints....................................................................................................................... 132
2.17.3.2 Settings of the Impedance Protection................................................................................. 135
2.17.3.3 Information from the Impedance Protection ....................................................................... 135
2.18 Out-of-Step Protection (ANSI 78)....................................................................................... 137
2.18.1 Functional Description........................................................................................................ 137
2.18.1.1 Measuring Principle............................................................................................................ 137
2.18.1.2 Out-of-Step Logic ............................................................................................................... 139
2.18.2 Setting Hints....................................................................................................................... 142
2.18.2.1 Settings of the Out-of-Step Protection................................................................................ 146
2.18.2.2 Information for the Out-of-Step Protection.......................................................................... 147
2.19 Undervoltage Protection (ANSI 27).................................................................................... 148
2.19.1 Functional Description........................................................................................................ 148
2.19.2 Setting Hints....................................................................................................................... 149
2.19.2.1 Settings of the Undervoltage Protection............................................................................. 150
2.19.2.2 Information for the Undervoltage Protection....................................................................... 150
2.20 Overvoltage Protection (ANSI 59)...................................................................................... 151
2.20.1 Functional Description........................................................................................................ 151
2.20.2 Setting Hints....................................................................................................................... 151
2.20.2.1 Settings of the Overvoltage Protection............................................................................... 152
2.20.2.2 Information for the Overvoltage Protection......................................................................... 152
2.21 Frequency Protection (ANSI 81)......................................................................................... 154
2.21.1 Functional Description........................................................................................................ 154
2.21.2 Setting Hints....................................................................................................................... 155
2.21.2.1 Settings for the Frequency Protection................................................................................ 157
2.21.2.2 Information for Frequency Protection................................................................................. 157
2.22 Overexcitation (Volt/Hertz) Protection (ANSI 24) ............................................................... 159
2.22.1 Functional Description........................................................................................................ 159
2.22.2 Setting Hints....................................................................................................................... 161
2.22.2.1 Settings of the Overexcitation Protection ........................................................................... 163
2.22.2.2 Information from the Overexcitation Protection.................................................................. 163
2.23 Inverse-Time Undervoltage Protection (ANSI 27).............................................................. 164

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2.23.1 Functional Description........................................................................................................164
2.23.2 Setting Hints .......................................................................................................................165
2.23.2.1 Settings of the Inverse Undervoltage Protection ................................................................166
2.23.2.2 Information for the Inverse Undervoltage Protection.......................................................... 166
2.24 Rate-of-Frequency-Change Protection df/dt (ANSI 81R) ...................................................167
2.24.1 Functional Description........................................................................................................167
2.24.2 Setting Hints .......................................................................................................................168
2.24.2.1 Settings of the Rate-of-Frequency-Change Protection.......................................................170
2.24.2.2 Information for the Rate-of-Frequency-Change Protection.................................................171
2.25 Jump of Voltage Vector ...................................................................................................... 172
2.25.1 Functional Description........................................................................................................173
2.25.2 Setting Hints .......................................................................................................................174
2.25.2.1 Settings of the Vector Jump Detection ...............................................................................175
2.25.2.2 Information for the Vector Jump Detection.........................................................................176
2.26 90–%–Stator Earth Fault Protection (ANSI 59N, 64G, 67G)..............................................177
2.26.1 Functional Description........................................................................................................177
2.26.2 Setting Hints .......................................................................................................................181
2.26.2.1 Settings of the 90% Stator Earth Fault Protection..............................................................183
2.26.2.2 Information for the 90% Stator Earth Fault Protection........................................................184
2.27 Sensitive Earth Fault Protection (ANSI 51GN, 64R)........................................................... 185
2.27.1 Functional Description........................................................................................................185
2.27.2 Setting Hints .......................................................................................................................187
2.27.2.1 Settings of the Sensitive Earth Fault Protection .................................................................188
2.27.2.2 Information for the Sensitive Earth Current Detection .......................................................188
2.28 100–%–Stator Earth Fault Protection with 3rd Harmonics
(ANSI 27/59TN 3rd Harm.).................................................................................................189
2.28.1 Functional Description........................................................................................................189
2.28.2 Setting Hints .......................................................................................................................191
2.28.2.1 Settings of the 100–%–Stator Earth Fault Protection with 3rd Harmonics ........................ 192
2.28.2.2 Information for the 100–% Stator Earth Fault Protection with 3rd Harmonics....................193
2.29 100–% Stator Earth Fault Protection with 20 Hz Voltage Injection (ANSI 64G - 100%).....194
2.29.1 Functional Description........................................................................................................194
2.29.2 Setting Hints .......................................................................................................................197
2.29.2.1 Settings of the 100-% Stator Earth Fault Protection........................................................... 199
2.29.2.2 Information for the 100-% Stator Earth Fault Protection..................................................... 200
2.30 Rotor Earth Fault Protection R, fn (ANSI 64R)...................................................................201
2.30.1 Functional Description........................................................................................................201
2.30.2 Setting Hints .......................................................................................................................203
2.30.2.1 Settings of the Rotor Earth Fault Protection.......................................................................204
2.30.2.2 Information for the Rotor Earth Fault Protection.................................................................205
2.31 Sensitive Rotor Earth Fault Protection with 1 to 3 Hz Square
Wave Voltage Injection (ANSI 64R - 1 to 3 Hz)..................................................................206
2.31.1 Functional Description........................................................................................................206
2.31.2 Setting Hints .......................................................................................................................211
2.31.2.1 Settings of the Sensitive Rotor Earth Fault Protection........................................................212

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2.31.2.2 Information for the Sensitive Earth Fault Protection........................................................... 212
2.32 Motor Starting Time Supervision (ANSI 48) ....................................................................... 213
2.32.1 Functional Description........................................................................................................ 213
2.32.2 Setting Hints....................................................................................................................... 215
2.32.2.1 Settings of the Motor Starting Time Supervision................................................................ 216
2.32.2.2 Information for the Motor Starting Time Supervision.......................................................... 216
2.33 Restart Inhibit for Motors (ANSI 66, 49Rotor)..................................................................... 217
2.33.1 Functional Description........................................................................................................ 217
2.33.2 Setting Hints....................................................................................................................... 220
2.33.2.1 Settings of the Restart Inhibit for Motors............................................................................ 223
2.33.2.2 Information for the Motor Restart Inhibit............................................................................. 224
2.34 Breaker Failure Protection (ANSI 50BF) ............................................................................ 225
2.34.1 Functional Description........................................................................................................ 225
2.34.2 Setting Hints....................................................................................................................... 227
2.34.2.1 Settings for Breaker Failure Protection............................................................................... 228
2.34.2.2 Information for the Breaker Failure Protection.................................................................... 229
2.35 Inadvertent Energization (ANSI 50, 27).............................................................................. 230
2.35.1 Functional Description........................................................................................................ 230
2.35.2 Setting Hints....................................................................................................................... 231
2.35.2.1 Settings of the Inadvertent Energizing Protection .............................................................. 232
2.35.2.2 Information for the Inadvertent Energizing Function........................................................... 232
2.36 DC Voltage/DC Current Protection (ANSI 59NDC/51NDC) ............................................... 234
2.36.1 Functional Description........................................................................................................ 234
2.36.2 Setting Hints....................................................................................................................... 236
2.36.2.1 Settings of the DC Voltage Protection................................................................................ 238
2.36.2.2 Information from the DC Voltage Protection....................................................................... 238
2.37 Analog Outputs................................................................................................................... 239
2.37.1 Functional Description........................................................................................................ 239
2.37.2 Setting Hints....................................................................................................................... 239
2.37.3 Settings of the Analog Outputs........................................................................................... 240
2.38 Measured Value Monitoring Functions............................................................................... 241
2.38.1 Functional Description........................................................................................................ 241
2.38.1.1 Hardware Monitoring.......................................................................................................... 241
2.38.1.2 Software Monitoring............................................................................................................ 243
2.38.1.3 Monitoring of External Current Transformer Circuits.......................................................... 243
2.38.1.4 Fuse Failure Monitoring...................................................................................................... 245
2.38.1.5 Malfunction Responses of the Monitoring Functions.......................................................... 247
2.38.2 Setting Hints....................................................................................................................... 249
2.38.2.1 Settings .............................................................................................................................. 250
2.38.2.2 Information of the Monitoring Functions............................................................................. 251
2.38.2.3 Sum Events of the Monitoring Functions............................................................................ 252
2.39 Trip Circuit Supervision ...................................................................................................... 254
2.39.1 Functional Description........................................................................................................ 254
2.39.2 Setting Hints....................................................................................................................... 258
2.39.2.1 Settings for the Trip Circuit Supervision............................................................................. 260

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2.39.2.2 Information..........................................................................................................................260
2.40 Threshold Supervision........................................................................................................261
2.40.1 Functional Description........................................................................................................261
2.40.2 Setting Hints .......................................................................................................................263
2.40.2.1 Settings of the Threshold Supervision................................................................................264
2.40.2.2 Information for the Threshold Supervision..........................................................................266
2.41 External Trip Coupling........................................................................................................267
2.41.1 Functional Description........................................................................................................267
2.41.2 Setting Hints .......................................................................................................................267
2.41.2.1 Settings............................................................................................................................... 268
2.41.2.2 Information for the Function Control...................................................................................268
2.42 Temperature Detection by Thermoboxes...........................................................................270
2.42.1 Functional Description........................................................................................................270
2.42.2 Setting Hints .......................................................................................................................271
2.42.2.1 Settings of the Temperature Detection Function................................................................273
2.42.2.2 Information for the Temperature Detection Function .........................................................277
2.43 Inversion of Phase Sequence (Phase Sequence Reversal)...............................................279
2.43.1 Functional Description........................................................................................................279
2.43.2 Setting Hint.........................................................................................................................280
2.44 Protection Function Logic...................................................................................................281
2.44.1 Functional Description........................................................................................................281
2.44.1.1 Processing Tripping Logic .................................................................................................. 281
2.44.2 Processing Tripping Logic ..................................................................................................282
2.44.2.1 Functional Description........................................................................................................282
2.44.2.2 Settings for the Tripping Logic............................................................................................ 283
2.44.3 Fault Display on the LEDs/LCD..........................................................................................283
2.44.3.1 Principle of Function...........................................................................................................283
2.44.3.2 Settings............................................................................................................................... 283
2.44.4 Statistical Counters.............................................................................................................284
2.44.4.1 Functional Description........................................................................................................284
2.44.4.2 Setting/Resetting ................................................................................................................ 284
2.44.4.3 Information for the Statistical Counter ............................................................................... 285
2.45 Auxiliary Functions.............................................................................................................. 286
2.45.1 Processing of Messages..................................................................................................... 286
2.45.1.1 Operational Annunciations..................................................................................................287
2.45.1.2 Fault Annunciations............................................................................................................287
2.45.1.3 General Interrogation.......................................................................................................... 288
2.45.1.4 Spontaneous Annunciations...............................................................................................288
2.45.1.5 Statistical Counters............................................................................................................. 288
2.45.2 Measurements....................................................................................................................289
2.45.3 Oscillographic Fault Recording (Waveform Capture).........................................................292
2.45.4 Date and Time Stamping....................................................................................................293
2.45.5 Commissioning Aids...........................................................................................................294
2.45.5.1 Influencing Information on the System Interface During Test Operation............................294
2.45.5.2 Testing the System Interface.............................................................................................. 294
2.45.5.3 Testing the States of the Binary Inputs/Outputs.................................................................295
2.45.5.4 Creating a Test Oscillographic Recording..........................................................................295

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2.45.6 Setting Hints....................................................................................................................... 295
2.45.6.1 Settings for Oscillographic Fault Recording ....................................................................... 296
2.45.6.2 Information for the Oscillographic Fault Recording ............................................................ 296
2.45.6.3 Information for Minimum and Maximum Values................................................................. 297
2.46 Breaker Control .................................................................................................................. 298
2.46.1 Types of Commands .......................................................................................................... 299
2.46.2 Steps in the Command Sequence...................................................................................... 299
2.46.3 Interlocking......................................................................................................................... 300
2.46.3.1 Interlocked / Non-Interlocked Switching............................................................................. 301
2.46.4 Recording and Acknowledgement of Commands .............................................................. 308
3 Installation and Commissioning .................................................................................................... 309
3.1 Installation and Connections .............................................................................................. 310
3.1.1 Installation .......................................................................................................................... 310
3.1.2 Connections ....................................................................................................................... 314
3.1.3 Hardware Modifications...................................................................................................... 316
3.1.3.1 General............................................................................................................................... 316
3.1.3.2 Disassembling the Device.................................................................................................. 318
3.1.3.3 Switching Elements on Printed Circuit Boards................................................................... 321
3.1.3.4 Interface Modules............................................................................................................... 332
3.1.3.5 To Reassemble the Device: ............................................................................................... 335
3.2 Checking Connections and System (Plant) Integration...................................................... 336
3.2.1 Checking the Data Connections of Serial Interfaces.......................................................... 336
3.2.2 Checking the Device Connections...................................................................................... 338
3.2.3 Checking the Integration in the Plant.................................................................................. 343
3.2.3.1 General Hints ..................................................................................................................... 343
3.3 Commissioning................................................................................................................... 346
3.3.1 Test Mode and Blocking Data Transmission...................................................................... 347
3.3.2 Testing the System Interface.............................................................................................. 347
3.3.3 Checking the Binary Inputs and Outputs............................................................................ 349
3.3.4 Testing the Breaker Failure Scheme.................................................................................. 351
3.3.5 Checking the Analog Outputs............................................................................................. 352
3.3.6 Testing User-Defined Functions (CFC).............................................................................. 352
3.3.7 Checking the Rotor Earth Fault Protection at Stand-Still.................................................... 352
3.3.7.1 Rotor Earth Fault Protection (R, fn).................................................................................... 352
3.3.7.2 Rotor Earth Fault Protection (1 to 3 Hz)............................................................................. 354
3.3.8 Checking the 100–% Stator Earth Fault Protection............................................................ 356
3.3.9 Checking the DC Voltage/DC Current Circuit..................................................................... 358
3.3.10 Trip/Close Tests for Primary Equipment............................................................................. 359
3.4 Primary Commissioning Tests with the Generator............................................................. 360
3.4.1 General Hints ..................................................................................................................... 360
3.4.2 Checking the Current Circuits............................................................................................. 364
3.4.3 Checking the Differential Protection................................................................................... 366
3.4.4 Checking the Earth Current Differential Protection............................................................. 368
3.4.5 Checking the Voltage Circuits ............................................................................................ 373

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3.4.6 Checking the Stator Earth Fault Protection ........................................................................374
3.4.6.1 Unit Connection..................................................................................................................375
3.4.6.2 Busbar Connection.............................................................................................................378
3.4.7 Testing the 100–% Stator Earth Fault Protection ...............................................................382
3.4.8 Checking the Sensitive Earth Fault Protection when Used
for Rotor Earth Fault Protection..........................................................................................384
3.4.9 Checking the Rotor Earth Fault Protection During Operation.............................................384
3.4.9.1 Rotor Earth Fault Protection (R, fn)....................................................................................384
3.4.9.2 Rotor Earth Fault Protection (1 to 3 Hz) .............................................................................385
3.4.10 Tests with the Generator Connected to the Network..........................................................386
3.4.10.1 Checking the Correct Connection Polarity..........................................................................386
3.4.10.2 Measurement of Motoring Power (Reverse Power) and Angle Error Correction................386
3.4.10.3 Calibrating the Reverse Power Protection..........................................................................387
3.4.10.4 Checking the Underexcitation Protection............................................................................388
3.4.10.5 Checking the Directional Function of the Overcurrent Time Protection..............................389
3.4.11 Triggering Oscillographic Recordings.................................................................................389
3.5 Final Preparation of the Device .......................................................................................... 391
4 Technical Data..................................................................................................................................393
4.1 General Device Data ..........................................................................................................395
4.1.1 Analog Inputs...................................................................................................................... 395
4.1.2 Power Supply...................................................................................................................... 396
4.1.3 Binary Inputs and Outputs.................................................................................................. 396
4.1.4 Communications Interfaces................................................................................................397
4.1.5 Electrical Tests ...................................................................................................................401
4.1.6 Mechanical Stress Tests..................................................................................................... 403
4.1.7 Climatic Stress Tests..........................................................................................................403
4.1.8 Service Conditions..............................................................................................................404
4.1.9 Certifications.......................................................................................................................404
4.1.10 Construction........................................................................................................................405
4.2 Definite-Time Overcurrent Protection (ANSI 50, 67) ..........................................................406
4.3 Inverse-Time Overcurrent Protection (ANSI 51, 67)........................................................... 407
4.4 Thermal Overload Protection (ANSI 49).............................................................................412
4.5 Unbalanced Load (Negative Sequence) Protection (ANSI 46)...........................................414
4.6 Startup Overcurrent Protection (ANSI 51)..........................................................................416
4.7 Differential Protection for Generators and Motors (ANSI 87G/87M)...................................417
4.8 Differential Protection for Transformers (ANSI 87T)...........................................................419
4.9 Earth Current Differential Protection (ANSI 87GN/TN).......................................................422
4.10 Underexcitation (Loss-of-Field) Protection (ANSI 40).........................................................423
4.11 Reverse Power Protection (ANSI 32R)............................................................................... 424
4.12 Forward Power Supervision (ANSI 32F).............................................................................425

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4.13 Impedance Protection (ANSI 21)........................................................................................ 426
4.14 Out-of-Step Protection (ANSI 78)....................................................................................... 427
4.15 Undervoltage Protection (ANSI 27).................................................................................... 428
4.16 Overvoltage Protection (ANSI 59)...................................................................................... 430
4.17 Frequency Protection (ANSI 81)......................................................................................... 431
4.18 Overexcitation (Volt/Hertz) Protection (ANSI 24) .............................................................. 432
4.19 Rate-of-Frequency-Change Protection (ANSI 81R)........................................................... 434
4.20 Jump of Voltage Vector...................................................................................................... 435
4.21 90–%–Stator Earth Fault Protection (ANSI 59N, 64G, 67G).............................................. 436
4.22 Sensitive Earth Fault Protection (ANSI 51GN, 64R) .......................................................... 437
4.23 100–%–Stator Earth Fault Protection with 3rd Harmonics
(ANSI 27/59TN 3rd Harm.)................................................................................................. 438
4.24 100–% Stator Earth Fault Protection with 20 Hz Voltage Injection (ANSI 64G, –100 %)... 439
4.25 Rotor Earth Fault Protection (R, fn, ANSI 64R).................................................................. 440
4.26 Sensitive Rotor Earth Fault Protection with 1 to 3 Hz (ANSI 64R)..................................... 441
4.27 Motor Starting Time Supervision (ANSI 48) ....................................................................... 442
4.28 Restart Inhibit for Motors (ANSI 66, 49Rotor) ...................................................................... 443
4.29 Breaker Failure Protection (ANSI 50BF) ............................................................................ 444
4.30 Inadvertent Energization (ANSI 50/27)............................................................................... 445
4.31 DC Voltage/DC Current Protection (ANSI 59NDC/51NDC) ................................................. 446
4.32 Thermoboxes for Temperature Detection........................................................................... 447
4.33 Additional Functions........................................................................................................... 448
4.34 Operating Ranges of the Protection Functions ................................................................ 455
4.35 Dimensions......................................................................................................................... 457
A Appendix .......................................................................................................................................... 461
A.1 Ordering Information and Accessories .............................................................................. 462
A.1.1 Accessories........................................................................................................................ 464
A.1.1.1 Schematic Diagram of the Accessories.............................................................................. 467
1.1.1.2 Dimensional Drawing of the Accessories........................................................................... 471
A.2 General Diagrams (IEC)..................................................................................................... 482
A.2.1 Housing for Panel Flush Mounting or Cubicle Installation.................................................. 482
A.2.2 Housing for Panel Surface Mounting.................................................................................. 484
A.3 General Diagrams (ANSI)................................................................................................... 486

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A.4 Connection Examples.........................................................................................................488
A.4.1 Connection Examples for RTD-Box....................................................................................498
A.5 100–% Stator Earth Fault Protection with Primary Load Resistor...................................... 499
A.5.1 Protection Settings.............................................................................................................. 500
A.5.2 Commissioning...................................................................................................................500
A.6 Definition of the Active Power Measurement......................................................................502
A.7 Current Transformer Requirements....................................................................................504
A.8 Overview of the Masking Features of the User Defined Information.................................. 506
A.8.1 Source: BI, F, C; Destination: BO, LED, C .........................................................................506
A.8.2 Destination: Indication Buffer, System Interface.................................................................510
A.9 Default Settings ..................................................................................................................511
A.9.1 Binary Inputs.......................................................................................................................511
A.9.2 Binary Outputs (output relays)............................................................................................ 511
A.9.3 LED Indicators....................................................................................................................514
A.9.4 Function Keys..................................................................................................................... 514
A.9.5 Establishing a Default Display............................................................................................ 515
A.9.6 Spontaneous Display Messages ........................................................................................515
A.9.7 Pre–Defined CFC Charts.................................................................................................... 516
A.10 Interoperability List..............................................................................................................517
A.11 Functions Overview............................................................................................................519
A.12 Settings...............................................................................................................................522
A.13 List of Information............................................................................................................... 548
A.14 List of Measured Values.....................................................................................................578
A.15 Protocol-Dependent Functions...........................................................................................584
Index.................................................................................................................................................. 585

17UM62 Manual
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Introduction 1
The SIPROTEC®4 7UM62 devices are introduced in this section. An overview of the
devices is presented in their application, characteristics, and scope of functions.
1.1 Overall Operation 2
1.2 Applications 5
1.3 Features 7

1Introduction
27UM62 Manual
C53000-G1176-C149-3
1.1 Overall Operation
The SIPROTEC®4 7UM62 is a numerical, multi-functional, protective and control
device equipped with a powerful microprocessor. All tasks, such as the acquisition of
the measured quantities, issuing of commands to circuit breakers and other primary
power system equipment, are processed in a completely digital way. Figure 1-1
illustrates the basic structure of the 7UM62.
Analog Inputs The measuring inputs (MI) section consists of current and voltage transformers. They
convert the signals from the primary transformers to levels appropriate for the internal
processing of the 7UM62.
Eight current inputs are available in the MI section. Three inputs are used on each side
of the protected object for measuring of the phase currents. 2 current inputs are
To
PC
To
SCADA
Operator
Control Panel
U
aux.
up to 15 Binary Inputs,
Power Supply
MI IA AD µC AV
Figure 1-1 Hardware Structure of the Numerical Device 7UM62 (Maximum Configuration)
Status
PC/
Modem
Programmable
µC
∩
#
Error
Run
Output
Relays, User-
Programmable
LEDs
on the Front
Panel, User-
Programmable
Display on
Front
Operator Interface
System
Serial Interface
I
L1, S1
I
L2, S1
I
L3, S1
I
EE1
U
L1
U
L2
U
L3
789
456
123
.0+/-
ESC ENTER
Rear
Service Interface
U
N
I
EE2
I
L1, S2
I
L2, S2
I
L3, S2
3 Measuring
Transducers
Analog
Outputs
the Front Panel
Analog
pro-
cessing
~
(PC Port)

1.1 Overall Operation
3
7UM62 Manual
C53000-G1176-C149-3
equipped with sensitive input transformers (IEE) and can measure secondary currents
in the mA range.
A voltage measuring input is provided for each phase-earth voltage (connection to
phase-to-phase voltages and voltage transformers in V connection is possible as
well). A further voltage input (UN) may optionally be used to measure either the
displacement voltage or any other voltage UX(for injected voltage of rotor protection).
The analog-to-digital (AD) stage consists of memory components, a multiplexer, and
an multichannel analog-to-digital converter. The A/D converter processes the analog
signals from the IA stage. The digital signals from the converter are input to the
microcomputer system where they are processed as numerical values in the residing
algorithms.
Microcomputer
System The actual protection and control functions of the 7UM62 are processed in the microcomputer system (µC). Specifically, the µC performs:
−Filtering and preparation of the measured quantities
−Permanent supervision of the measured quantities
−Monitoring of the pickup conditions for the individual protection functions
−Evaluation of limit values and sequences in time
−Control of signals for the logic functions
−Decision for trip commands
−Signalling of protection behaviour via LED, LCD, relay or serial interface
−Recording of messages and data for events, alarms, faults, and control actions, and
provision of their data for analysis
−Management of the operating system and the associated functions such as data
recording, real-time clock, communications, interfaces, etc.
Adaptation of
Sampling
Frequency
The frequency of the measured quantities is continuously measured and used for
determination of the actual sampling frequency. This ensures that the protection
functions are always processed with algorithms matched to the actual frequency.
Thus, a wide frequency range from 11 Hz to 69 Hz is specified with small frequency
influence.
The sampling frequency adaptation can, however, operate only when at least one a.c.
measured quantity is present at one of the analog inputs, with an amplitude of at least
5 % of rated value (“operational condition 1”).
If no suitable a.c. measured values are present, or if the frequency is below 11 Hz or
above 70 Hz, the relay operates in mode “operational condition 0” (refer to Section
4.34).
Binary Inputs and
Outputs The µC obtains external information through the binary inputs such as blocking commands for protective functions or position indications of circuit breakers. The µC
issues commands to external equipment via the output contacts. These output
commands are generally used to operate circuit breakers or other switching devices.
They can also be connected to other protective devices, annunciators, or external
carrier equipment for use in Pilot-Relaying schemes.
Front Elements Light-emitting diodes (LEDs) and a display screen (LCD) on the front panel provide
information such as messages related to events and functional status of the 7UM62.

1Introduction
47UM62 Manual
C53000-G1176-C149-3
Integrated control and numeric keys in conjunction with the LCD facilitate local
interaction with the 7UM62. All information of the device can be accessed using the
integrated control and numeric keys. The information includes protective and control
settings, operating and fault messages, and metering values (see also SIPROTEC®
4–System Manual). The settings can be modified; the procedures are discussed in
Chapter 2.
Serial Interfaces Aserialoperator interface (PC port) on the front panel is provided for local
communications with the 7UM62 through a personal computer. Convenient operation
of all functions of the device is possible using the SIPROTEC®4 operating program
DIGSI®4.
A separate serial service interface is provided for remote communications via a
modem, or local communications via a substation master computer that is
permanently connected to the 7UM62. DIGSI®4 is required.
All 7UM62 data can be transferred to a central master or main control system through
the serial system (SCADA) interface. Various protocols and physical arrangements
are available for this interface to suit the particular application.
A fourth interface is provided for time synchronization of the internal clock by
external sources.
Further communications protocols can be realized via additional interface modules.
Analog Outputs/
Temperature Input Depending on the ordering variant and configuration, Port B and D can be equipped with analog output modules for the output of selected measured values (0 to 20 mA).
If these ports are equipped with input modules (RS485 or optical) instead, tempera-
tures can be fed in from an external temperature detection unit.
Power Supply The 7UM62 can be supplied with any of the common power supply voltages from 24
VDC to 250 VDC. The device can also be supplied with 115 VAC. Momentary dips of
the supply voltage up to 50 ms are bridged by a capacitor (see Technical Data, Sub-
section 4.1.2). Voltage dips can occur, for example, if the voltage supply system
(substation battery) becomes short-circuited or experiences a severe variation in load.