GE P54C User Manual

5.10.1 Single-Phase Autoreclose Cycle Selection Logic Diagram 158
5.10.2 3-phase Autoreclose Cycle Selection 159
5.11 Dead Time Control 159
5.11.1 Dead Time Start Enable Logic Diagram 160
5.11.2 1-phase Dead Time Logic Diagram 161
5.11.3 3-phase Dead Time Logic Diagram 162
5.12 Circuit Breaker Autoclose 162
5.12.1 Circuit Breaker Autoclose Logic Diagram 163
5.13 Reclaim Time 163
5.13.1 Prepare Reclaim Initiation Logic Diagram 164
5.13.2 Reclaim Time Logic Diagram 164
5.13.3 Succesful Autoreclose Signals Logic Diagram 165
5.13.4 Autoreclose Reset Successful Indication Logic Diagram 165
5.14 CB Healthy and System Check Timers 165
5.14.1 CB Healthy and System Check Timers Logic Diagram 166
5.15 Autoreclose Shot Counters 166
5.15.1 Autoreclose Shot Counters Logic Diagram 167
5.16 Circuit Breaker Control 168
5.16.1 CB Control Logic Diagram 168
5.17 Circuit Breaker Trip Time Monitoring 169
5.17.1 CB Trip Time Monitoring Logic Diagram 169
5.18 Autoreclose Lockout 169
5.18.1 CB Lockout Logic Diagram 170
5.19 Reset Circuit Breaker Lockout 171
5.19.1 Reset CB Lockout Logic Diagram 171
5.20 Pole Discrepancy 172
5.20.1 Pole Discrepancy Logic Diagram 172
5.21 Circuit Breaker Trip Conversion 172
5.21.1 CB Trip Conversion Logic Diagram 173
5.22 Monitor Checks for CB Closure 173
5.22.1 Check Synchronisation Monitor for CB Closure 174
5.22.2 Voltage Monitor for CB Closure 175
5.23 Synchronisation Checks for CB Closure 175
5.23.1 Three-phase Autoreclose System Check Logic Diagram 177
5.23.2 CB Manual Close System Check Logic Diagram 178
6 Setting Guidelines 179
6.1 De-ionising Time Guidance 179
6.2 Dead Timer Setting Guidelines 179
6.2.1 Example Dead Time Calculation 179
6.3 Reclaim Time Setting Guidelines 180
Chapter 8 CB Fail Protection 181
1 Chapter Overview 183
2 Circuit Breaker Fail Protection 184
3 Circuit Breaker Fail Implementation 185
3.1 Circuit Breaker Fail Timers 185
3.2 Zero Crossing Detection 185
4 Circuit Breaker Fail Logic 187
4.1 Circuit Breaker Fail Logic - Part 1 187
4.2 Circuit Breaker Fail Logic - Part 2 188
4.3 Circuit Breaker Fail Logic - Part 3 189
4.4 Circuit Breaker Fail Logic - Part 4 190
5 Application Notes 191
5.1 Reset Mechanisms for CB Fail Timers 191
5.2 Setting Guidelines (CB fail Timer) 191
5.3 Setting Guidelines (Undercurrent) 192
P54A/B/C/E Contents
P54xMED-TM-EN-1 v

GE P54C Specifications

General

Brand	GE
Model	P54C
Category	Relays
Language	English