GE MiCOM P40 User Manual

5.12.5 Single-phase Follower Timing Logic Diagram 312
5.12.6 Three-phase Follower Timing Logic Diagram 313
5.13 Circuit Breaker Autoclose 313
5.13.1 Circuit Breaker Autoclose Logic Diagram 314
5.14 Reclaim Time 314
5.14.1 Prepare Reclaim Initiation Logic Diagram 315
5.14.2 Reclaim Time Logic Diagram 316
5.14.3 Succesful Autoreclose Signals Logic Diagram 317
5.14.4 Autoreclose Reset Successful Indication Logic Diagram 318
5.15 CB Healthy and System Check Timers 318
5.15.1 CB Healthy and System Check Timers Logic Diagram 319
5.16 Autoreclose Shot Counters 319
5.16.1 Autoreclose Shot Counters Logic Diagram 321
5.17 Circuit Breaker Control 322
5.17.1 CB Control Logic Diagram 322
5.18 Circuit Breaker Trip Time Monitoring 323
5.18.1 CB Trip Time Monitoring Logic Diagram 324
5.19 Autoreclose Lockout 325
5.19.1 CB Lockout Logic Diagram 326
5.20 Reset Circuit Breaker Lockout 327
5.20.1 Reset CB Lockout Logic Diagram 329
5.21 Pole Discrepancy 329
5.21.1 Pole Discrepancy Logic Diagram 330
5.22 Circuit Breaker Trip Conversion 330
5.22.1 CB Trip Conversion Logic Diagram 331
5.23 Monitor Checks for CB Closure 331
5.23.1 Voltage Monitor for CB Closure 332
5.23.2 Check Synchronisation Monitor for CB Closure 333
5.24 Synchronisation Checks for CB Closure 334
5.24.1 Three-phase Autoreclose Leader Check Logic Diagram 336
5.24.2 Three-phase Autoreclose Follower Check Logic Diagram 338
5.24.3 CB Manual Close System Check Logic Diagram 340
6 Setting Guidelines 341
6.1 De-ionising Time Guidance 341
6.2 Dead Timer Setting Guidelines 341
6.2.1 Example Dead Time Calculation 341
6.3 Reclaim Time Setting Guidelines 342
6.4 Autoreclose Shot Counters 342
Chapter 12 CB Fail Protection 345
1 Chapter Overview 347
2 Circuit Breaker Fail Protection 348
3 Circuit Breaker Fail Implementation 349
3.1 Circuit Breaker Fail Timers 349
3.2 Zero Crossing Detection 349
4 Circuit Breaker Fail Logic 351
4.1 Circuit Breaker Fail Logic - Part 1 351
4.2 Circuit Breaker Fail Logic - Part 2 352
4.3 Circuit Breaker Fail Logic - Part 3 353
4.4 Circuit Breaker Fail Logic - Part 4 354
5 Application Notes 355
5.1 Reset Mechanisms for CB Fail Timers 355
5.2 Setting Guidelines (CB fail Timer) 355
5.3 Setting Guidelines (Undercurrent) 356
Chapter 13 Current Protection Functions 357
Contents P446SV
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GE MiCOM P40 Specifications

General

Brand	GE
Model	MiCOM P40
Category	Relays
Language	English