Siemens SIPROTEC 7UM62

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Technical Data

4.5 Unbalanced Load (Negative Sequence) Protection (ANSI 46)

SIPROTEC, 7UM62, Manual

C53000-G1176-C149-7, Release date 03.2010

474

Figure 4-5 Trip times of the Thermal Characteristic for Unbalanced Load Protection

Main Page

Table of Contents9
Introduction21
Overall Operation22
Application Scope25
Characteristics27
Functions35
Introduction, Reference Power System37
Function Description37
Device39
Setting Notes39
Settings40
Information List41
Ethernet EN100 Modul42
Function Description42
Setting Notes42
Information List42
Functional Scope43
Functional Description43
Setting Notes44
Settings48
Power System Data 153
Setting Notes53
Settings60
Information List61
Change Group62
Setting Notes62
Settings62
Information List62
Power System Data 263
Function Description63
Setting Notes63
Settings63
Information List64
Definite-Time Overcurrent Protection (I>, ANSI 50/51) with Undervoltage Seal-In65
Function Description65
Setting Notes66
Settings68
Information List68
Definite-Time Overcurrent Protection (I>>, ANSI 50, 51, 67) with Direction Detection69
Function Description69
Setting Notes72
Settings74
Information List74
Inverse-Time Overcurrent Protection (ANSI 51V)75
Function Description75
Setting Notes79
Settings80
Information List80
Thermal Overload Protection (ANSI 49)81
Function Description81
Setting Notes85
Settings89
Information List90
Unbalanced Load (Negative Sequence) Protection (ANSI 46)91
Function Description91
Setting Notes94
Settings97
Information List97
Startup Overcurrent Protection (ANSI 51)98
Function Description98
Setting Notes99
Settings101
Information List101
Differential Protection and Its Protected Objects102
Differential Protection (ANSI 87G/87M/87T)102
Function Description102
Setting Notes112
Settings112
Information List113
Protected Object Generator or Motor115
Function Description115
Setting Notes116
Protected Object Transformer118
Function Description118
Setting Notes122
Current Transformer Requirements126
Function Description126
Earth Current Differential Protection (ANSI 87GN,TN)128
Function Description128
Setting Notes133
Settings135
Information List135
Underexcitation (Loss-Of-Field) Protection (ANSI 40)136
Function Description136
Setting Notes139
Settings143
Information List144
Reverse Power Protection (ANSI 32R)145
Functional Description145
Setting Notes146
Settings148
Information List148
Forward Active Power Supervision (ANSI 32F)149
Functional Description149
Setting Notes150
Settings151
Information List151
Impedance Protection (ANSI 21)152
Functional Description152
Power Swing Blocking157
Setting Notes158
Settings163
Information List164
Out-Of-Step Protection (ANSI 78)165
Measuring Principle165
Out-Of-Step Protection Logic167
Setting Notes169
Settings174
Information List174
Undervoltage Protection (ANSI 27)175
Functional Description175
Setting Notes176
Settings177
Information List177
Overvoltage Protection (ANSI 59)178
Functional Description178
Setting Notes179
Settings180
Information List180
Frequency Protection (ANSI 81)181
Functional Description181
Setting Notes182
Settings183
Information List184
Overexcitation (Volt/Hertz) Protection (ANSI 24)185
Functional Description185
Setting Notes187
Settings189
Information List189
Inverse-Time Undervoltage Protection (ANSI 27)190
Function Description190
Setting Notes191
Settings192
Information List192
Rate-Of-Frequency-Change Protection Df/Dt (ANSI 81R)193
Function Description193
Setting Notes195
Settings197
Information List198
Jump of Voltage Vector199
Functional Description199
Setting Notes201
Settings202
Information List202
Stator Earth Fault Protection (ANSI 59N, 64G, 67G)203
Functional Description203
Setting Notes208
Settings210
Information List210
Sensitive Earth Fault Protection (ANSI 51GN, 64R)211
Functional Description211
Setting Notes213
Settings214
Information List214
Stator Earth Fault Protection with 3Rd Harmonics (ANSI 27/59TN 3Rd Harm.)215
Functional Description215
Setting Notes219
Settings222
Information List222
Stator Earth Fault Protection with 20 Hz Voltage Injection (ANSI 64G - 100%)223
Function Description223
Setting Notes226
Settings230
Information List230
Sensitive Earth Fault Protection B (ANSI 51GN)231
Function Description231
Setting Notes234
Settings235
Information List235
Interturn Protection (ANSI 59N (IT))236
Functional Description236
Setting Notes238
Settings239
Information List239
Rotor Earth Fault Protection R, Fn (ANSI 64R)240
Function Description240
Setting Notes242
Settings244
Information List244
Sensitive Rotor Earth Fault Protection with 1 to 3 Hz Square Wave Voltage Injection (ANSI 64R - 1 to 3 Hz)245
Function Description245
Setting Notes249
Settings250
Information List250
Motor Starting Time Supervision (ANSI 48)251
Functional Description251
Setting Notes253
Settings254
Information List254
Restart Inhibit for Motors (ANSI 66, 49Rotor)255
Functional Description255
Setting Notes259
Settings262
Information List262
Breaker Failure Protection (ANSI 50BF)263
Function Description263
Setting Notes266
Settings267
Information List267
Inadvertent Energization (ANSI 50, 27)268
Functional Description268
Setting Notes269
Settings270
Information List270
DC Voltage/Current Protection (ANSI 59NDC/51NDC)271
Functional Description271
Setting Notes273
Settings274
Information List274
Analog Outputs275
Function Description275
Setting Notes277
Settings281
Monitoring Functions282
Measurement Supervision282
Hardware Monitoring282
Software Monitoring284
Monitoring of External Transformer Circuits285
Setting Notes287
Settings287
Information List288
Supervision289
Fuse Failure Monitor289
Malfunction Responses of the Monitoring Functions291
Setting Notes293
Settings293
Information List294
Trip Circuit Supervision295
Functional Description295
Setting Notes299
Settings301
Information List301
Threshold Supervision302
Functional Description302
Setting Notes306
Settings306
Information List312
External Trip Functions313
Functional Description313
Setting Notes313
Settings313
Information List315
Temperature Detection by Thermoboxes316
Function Description316
Setting Notes317
Settings319
Information List324
Phase Rotation325
Functional Description325
Setting Notes326
Protection Function Control327
Pickup Logic for the Entire Device327
Function Description327
Tripping Logic for the Entire Device328
Functional Description328
Setting Notes328
Auxiliary Functions329
Processing of Annunciation329
Function Description329
Statistics331
Functional Description331
Information List332
Measurement (Secondary/Primary/Percentage Values)333
Functional Description333
Information List337
Thermal Measurement338
Description338
Information List339
Diff- and Rest. Measurement340
Information List340
Min/Max Measurement Setup341
Information List341
Energy342
Information List342
Set Points (Measured Values)343
Information List343
Set Points (Statistic)343
Oscillographic Fault Records344
Function Description344
Setting Notes344
Settings345
Information List345
Date and Time Stamping346
Functional Description346
Commissioning Aids347
Test Messages to the SCADA Interface During Test Operation347
Checking the System Interface347
Checking the Binary Inputs and Outputs348
Creating a Test Fault Record348
Command Processing349
Control Device349
Description349
Types of Commands350
Description350
Command Processing351
Description351
Interlocking352
Description352
Command Logging359
Description359
Mounting and Commissioning361
Mounting and Connections362
Configuration Information362
Hardware Modifications365
General365
Disassembly367
Switching Elements on the Printed Circuit Boards370
Interface Modules383
Reassembly386
Mounting386
Panel Flush Mounting386
Rack and Cubicle Mounting388
Panel Surface Mounting389
Checking Connections390
Checking Data Connections of Interfaces390
System Interface391
Termination391
Analog Output392
Time Synchronization Interface392
Optical Fibres393
Checking the Device Connections393
Checking System Incorporation397
Commissioning400
Test Mode / Transmission Block401
Testing System Interfaces401
Checking the Binary Inputs and Outputs403
Tests for Circuit Breaker Failure Protection406
Testing Analog Output406
Testing User-Defined Functions406
Checking the Rotor Ground Fault Protection at Standstill407
Checking the 100 % Stator Earth Fault Protection411
Checking the DC Voltage / DC Current Circuit414
Trip/Close Tests for the Configured Operating Devices414
Commissioning Test with the Machine414
Checking the Current Circuits419
Checking the Differential Protection421
Checking the Earth Current Differential Protection424
Checking the Voltage Circuits428
Checking the Stator Ground Fault Protection430
Checking the 100 % Stator Ground Fault Protection438
Checking the Sensitive Ground Fault Protection as Rotor Ground Fault Protection439
Checking the Rotor Ground Fault Protection During Operation440
Checking the Interturn Fault Protection441
Checks with the Network443
Creating Oscillographic Fault Recordings for Tests447
Final Preparation of the Device449
Technical Data451
General453
Analog Inputs/Outputs453
Auxiliary Voltage454
Binary Inputs and Outputs455
Communication Interfaces457
Electrical Tests461
Mechanical Stress Tests462
Climatic Stress Tests463
Service Conditions464
Certifications464
Design464
Definite-Time Overcurrent Protection (ANSI 50, 51 67)465
Inverse-Time Overcurrent Protection (ANSI 51V)466
Thermal Overload Protection (ANSI 49)471
Unbalanced Load (Negative Sequence) Protection (ANSI 46)473
Startup Overcurrent Protection (ANSI 51)475
Differential Protection (ANSI 87G/87M/87T) for Generators and Motors476
Differential Protection (ANSI 87G/87M/87T) for Transformers478
Earth Current Differential Protection (ANSI 87GN,TN)481
Underexcitation (Loss-Of-Field) Protection (ANSI 40)482
Reverse Power Protection (ANSI 32R)483
Forward Active Power Supervision (ANSI 32F)484
Impedance Protection (ANSI 21)485
Out-Of-Step Protection (ANSI 78)487
Undervoltage Protection (ANSI 27)488
Overvoltage Protection (ANSI 59)490
Frequency Protection (ANSI 81)491
Overexcitation (Volt/Hertz) Protection (ANSI 24)492
Rate-Of-Frequency-Change Protection Df/Dt (ANSI 81R)494
Jump of Voltage Vector495
Stator Earth Fault Protection (ANSI 59N, 64G, 67G)496
Sensitive Earth Fault Protection (ANSI 51GN, 64R)497
Stator Earth Fault Protection with 3Rd Harmonics (ANSI 27/59TN 3Rd Harm.)498
Stator Earth Fault Protection with 20 Hz Voltage Injection (ANSI 64G - 100%)499
Sensitive Earth Fault Protection B (ANSI 51GN)500
Interturn Protection (ANSI 59N (IT))501
Rotor Earth Fault Protection R, Fn (ANSI 64R)502
Sensitive Rotor Earth Fault Protection with 1 to 3 Hz Square Wave Voltage Injection (ANSI 64R - 1 to 3 Hz)504
Motor Starting Time Supervision (ANSI 48)505
Restart Inhibit for Motors (ANSI 66, 49Rotor)506
Breaker Failure Protection (ANSI 50BF)507
Inadvertent Energization (ANSI 50, 27)508
DC Voltage/Current Protection (ANSI 59NDC/51NDC)509
Temperature Detection by Thermoboxes510
Threshold Supervision511
User-Defined Functions (CFC)512
Additional Functions517
Operating Range of the Protection Functions523
Dimensions525
Panel Flush and Cubicle Mounting (Housing Size 1 / 2 )525
Housing for Panel Flush Mounting or Cubicle Mounting (Size )526
Panel Flush Mounting (Housing Size )527
Housing for Panel Surface Mounting (Size )527
Dimensional Drawing of Coupling Device 7XR6100-0CA0 for Panel Flush Mounting528
Dimensions of Coupling Unit 7XR6100-0BA0 for Panel Surface Mounting529
Dimensional Drawing of 3PP13530
Dimensional Drawing of Series Device 7XT7100-0BA00 for Panel Surface Mounting531
Dimensions of Series Unit 7XT7100-0EA00 for Panel Flash Mounting532
Dimensional Drawing of Resistor Unit 7XR6004-0CA00 for Panel Surface Mounting or Cubicle Flush Mounting533
Dimensions of Resistor Unit 7XR6004-0BA00 for Panel Surface Mounting534
Dimensional Drawing of 20 Hz Generator 7XT3300-0CA00 for Panel Surface Mounting or Cubicle Flush Mounting535
Maßbild 20 Hz-Generator 7XT3300-0CA00/DD für Schalttafel- oder Schrankeinbau536
Dimensional Drawing of 20 Hz Generator 7XT3300-0BA00 for Panel Surface Mounting537
Maßbild 20 Hz-Generator 7XT3300-0BA00/DD für Schalttafelaufbau538
Dimensional Drawing of 20 Hz Bandpass 7XT3400-0CA00 for Panel Surface Mounting or Cubicle Flush Mounting539
Dimensional Drawing of 20 Hz Bandpass 7XT3400-0BA00 for Panel Surface Mounting540
Appendix541
Ordering Information and Accessories542
Ordering Information542
Order Key542
Accessories546
Terminal Assignments549
Panel Flush Mounting or Cubicle Mounting549
Panel Surface Mounting551
Connection Examples553
7UM62 - Connection Examples553
Connection Examples for RTD Box561
Schematic Diagram of Accessories562
Default Settings565
Leds565
Binary Input566
Binary Output566
Function Keys567
Default Display568
Pre-Defined CFC Charts569
Protocol-Dependent Functions570
Functional Scope571
Settings576
Information List593
Group Alarms615
Measured Values616
Literature619
Glossary621
Index633

Siemens SIPROTEC 7UM62 - Page 474

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