GE 845 Instruction Manual page 6

5.STATUS
TOC-IV
Voltage Elements .................................................................................................................................4 - 203
Undervoltage Curves ......................................................................................................................... 4 - 203
Phase Undervoltage Protection .................................................................................................... 4 - 203
Auxiliary Undervoltage...................................................................................................................... 4 - 207
Phase Overvoltage Protection ....................................................................................................... 4 - 210
Auxiliary Overvoltage Protection.................................................................................................. 4 - 213
Neutral Overvoltage Protection .................................................................................................... 4 - 216
Negative Sequence Overvoltage Protection........................................................................... 4 - 219
Volts per Hertz....................................................................................................................................... 4 - 221
Power Elements ....................................................................................................................................4 - 228
Directional Power................................................................................................................................. 4 - 228
Frequency Elements ...........................................................................................................................4 - 235
Underfrequency.................................................................................................................................... 4 - 235
Overfrequency....................................................................................................................................... 4 - 239
Frequency Rate of Change.............................................................................................................. 4 - 242
Monitoring...................................................................................................................................... 4 - 248
Transformer............................................................................................................................................4 - 248
Harmonic Derating.............................................................................................................................. 4 - 248
Thermal Elements................................................................................................................................ 4 - 251
Tap Changer Failure ........................................................................................................................... 4 - 257
Trip and Close Circuit Monitoring .................................................................................................4 - 259
Breaker Arcing Current......................................................................................................................4 - 267
Breaker Health ......................................................................................................................................4 - 270
Functions .................................................................................................................................................4 - 275
Power Factor.......................................................................................................................................... 4 - 275
Demand.................................................................................................................................................... 4 - 282
Pulsed Outputs...................................................................................................................................... 4 - 286
Digital Counters .................................................................................................................................... 4 - 288
Control ............................................................................................................................................. 4 - 293
Setpoint Group ......................................................................................................................................4 - 293
Breaker Control.....................................................................................................................................4 - 296
Trip Bus .....................................................................................................................................................4 - 302
Breaker Failure ......................................................................................................................................4 - 305
Setup.......................................................................................................................................................... 4 - 306
Initiate ....................................................................................................................................................... 4 - 309
Synchrocheck ........................................................................................................................................4 - 310
VT Fuse Failure ......................................................................................................................................4 - 316
FlexLogic ......................................................................................................................................... 4 - 319
Timers........................................................................................................................................................4 - 327
Non-volatile Latches ..........................................................................................................................4 - 328
FlexLogic Equation ..............................................................................................................................4 - 329
Viewing FlexLogic Graphics ............................................................................................................ 4 - 329
FlexElements ..........................................................................................................................................4 - 330
RTD Temperature........................................................................................................................ 4 - 337
Breakers ................................................................................................................................................5 - 1
Contact Inputs....................................................................................................................................5 - 2
Output Relays .....................................................................................................................................5 - 2
Virtual Inputs.......................................................................................................................................5 - 2
Virtual Outputs...................................................................................................................................5 - 3
Flex State ..............................................................................................................................................5 - 4
Communications...............................................................................................................................5 - 4
GOOSE Rx and Tx ...................................................................................................................................... 5 - 4
Information..........................................................................................................................................5 - 5
Main CPU....................................................................................................................................................... 5 - 5
845 TRANSFORMER PROTECTION SYSTEM - INSTRUCTION MANUAL