GE P54C User Manual

9.5 Configuring the Protection Communications 118
9.6 Setting Up the Phase Differential Characteristic 119
9.7 Sensitivity Under Heavy Loads 119
9.8 Permissive Intertripping 121
9.9 CT Ratio Correction Setting Guidelines 121
9.10 Feeders with Small Tapped Loads 122
Chapter 7 Autoreclose 123
1 Chapter Overview 125
2 Introduction to Autoreclose 126
3 Autoreclose Implementation 127
3.1 Autoreclose Logic Inputs from External Sources 128
3.1.1 Circuit Breaker Healthy Input 128
3.1.2 Inhibit Autoreclose Input 128
3.1.3 Block Autoreclose Input 128
3.1.4 Reset Lockout Input 129
3.1.5 Pole Discrepancy Input 129
3.1.6 External Trip Indication 129
3.2 Autoreclose Logic Inputs 129
3.2.1 Trip Initiation Signals 129
3.2.2 Circuit Breaker Status Inputs 129
3.2.3 System Check Signals 129
3.3 Autoreclose Logic Outputs 129
3.4 Autoreclose Operating Sequence 130
3.4.1 AR Timing Sequence - Transient Fault 130
3.4.2 AR Timing Sequence - Evolving/Permanent Fault 130
3.4.3 AR Timing Sequence - Evolving/Permanent Fault Single-phase 131
4 Autoreclose System Map 132
4.1 Autoreclose System Map Diagrams 134
4.2 Autoreclose Internal Signals 139
4.3 Autoreclose DDB Signals 141
5 Logic Modules 147
5.1 Circuit Breaker Status Monitor 147
5.1.1 CB State Monitor Logic diagram 148
5.2 Circuit Breaker Open Logic 149
5.2.1 Circuit Breaker Open Logic Diagram 149
5.3 Circuit Breaker in Service Logic 149
5.3.1 Circuit Breaker in Service Logic Diagram 149
5.3.2 Autoreclose OK Logic Diagram 150
5.4 Autoreclose Enable 150
5.4.1 Autoreclose Enable Logic Diagram 150
5.5 Autoreclose Modes 150
5.5.1 Single-Phase and Three-Phase Autoreclose 151
5.5.2 Autoreclose Modes Enable Logic Diagram 152
5.6 AR Force Three-Phase Trip Logic 152
5.6.1 AR Force Three-Phase Trip Logic Diagram 152
5.7 Autoreclose Initiation Logic 152
5.7.1 Autoreclose Initiation Logic Diagram 154
5.7.2 Autoreclose Trip Test Logic Diagram 154
5.7.3 AR External Trip Initiation Logic Diagram 155
5.7.4 Protection Reoperation and Evolving Fault Logic Diagram 156
5.7.5 Fault Memory Logic Diagram 156
5.8 Autoreclose In Progress 156
5.8.1 Autoreclose In Progress Logic Diagram 157
5.9 Sequence Counter 157
5.9.1 Autoreclose Sequence Counter Logic Diagram 158
5.10 Autoreclose Cycle Selection 158
Contents P54A/B/C/E
iv P54xMED-TM-EN-1

GE P54C Specifications

General

Brand	GE
Model	P54C
Category	Relays
Language	English