GE P54C User Manual

3.1 Overvoltage Protection Implementation 227
3.2 Overvoltage Protection Logic 228
3.3 Application Notes 229
3.3.1 Overvoltage Setting Guidelines 229
4 Compensated Overvoltage 230
5 Residual Overvoltage Protection 231
5.1 Residual Overvoltage Protection Implementation 231
5.2 Residual Overvoltage Logic 232
5.3 Application Notes 232
5.3.1 Calculation for Solidly Earthed Systems 232
5.3.2 Calculation for Impedance Earthed Systems 233
5.3.3 Setting Guidelines 234
Chapter 11 Frequency Protection Functions 235
1 Chapter Overview 237
2 Frequency Protection 238
2.1 Underfrequency Protection 238
2.1.1 Underfrequency Protection Implementation 238
2.1.2 Underfrequency Protection logic 239
2.1.3 Application Notes 239
2.2 Overfrequency Protection 239
2.2.1 Overfrequency Protection Implementation 239
2.2.2 Overfrequency Protection logic 240
2.2.3 Application Notes 240
3 Independent R.O.C.O.F Protection 241
3.1 Indepenent R.O.C.O.F Protection Implementation 241
3.2 Independent R.O.C.O.F Protection Logic 241
Chapter 12 Monitoring and Control 243
1 Chapter Overview 245
2 Event Records 246
2.1 Event Types 246
2.1.1 Opto-input Events 247
2.1.2 Contact Events 247
2.1.3 Alarm Events 247
2.1.4 Fault Record Events 248
2.1.5 Maintenance Events 248
2.1.6 Protection Events 248
2.1.7 Security Events 249
2.1.8 Platform Events 249
3 Disturbance Recorder 250
4 Measurements 251
4.1 Measured Quantities 251
4.2 Measurement Setup 251
4.3 Fault Locator 251
4.4 Opto-input Time Stamping 251
5 CB Condition Monitoring 252
5.1 Broken Current Accumulator 253
5.2 CB Trip Counter 253
5.3 CB Operating Time Accumulator 254
5.4 Excessive Fault Frequency Counter 254
5.5 Reset Lockout Alarm 255
5.6 CB Condition Monitoring Logic 256
5.7 Reset Circuit Breaker Lockout 256
5.7.1 Reset CB Lockout Logic Diagram 257
5.8 Application Notes 257
P54A/B/C/E Contents
P54xMED-TM-EN-1 vii

GE P54C Specifications

General

Brand	GE
Model	P54C
Category	Relays
Language	English