GE MI-869 Instruction Manual page 6

IV
Thermal Model....................................................................................................................................... 4 - 112
Current Unbalance.............................................................................................................................. 4 - 134
Mechanical Jam ................................................................................................................................... 4 - 139
Undercurrent.......................................................................................................................................... 4 - 142
Loss of Excitation ................................................................................................................................. 4 - 145
Overload Alarm..................................................................................................................................... 4 - 151
Short Circuit ............................................................................................................................................ 4 - 153
Ground Fault .......................................................................................................................................... 4 - 156
Acceleration Time ................................................................................................................................ 4 - 160
Underpower............................................................................................................................................ 4 - 163
2-Speed Motor.......................................................................................................................................4 - 166
Speed2 Thermal Model ..................................................................................................................... 4 - 166
Speed2 Acceleration .......................................................................................................................... 4 - 168
Speed2 Undecurrent .......................................................................................................................... 4 - 170
Current Elements .................................................................................................................................4 - 172
Inverse Time Overcurrent Curves................................................................................................. 4 - 172
Percent of Load-To-Trip.................................................................................................................... 4 - 180
Phase Time Overcurrent Protection............................................................................................ 4 - 180
Phase Instantaneous Overcurrent Protection........................................................................ 4 - 184
Phase Directional Overcurrent Protection ............................................................................... 4 - 186
Neutral Time Overcurrent Protection ......................................................................................... 4 - 189
Neutral Instantaneous Overcurrent Protection..................................................................... 4 - 192
Neutral Directional Overcurrent Protection ............................................................................ 4 - 195
Ground Time Overcurrent Protection......................................................................................... 4 - 200
Ground Instantaneous Overcurrent Protection..................................................................... 4 - 202
Negative Sequence Instantaneous Overcurrent Protection ........................................... 4 - 204
Voltage Elements .................................................................................................................................4 - 207
Phase Reversal...................................................................................................................................... 4 - 207
Undervoltage Curves ......................................................................................................................... 4 - 210
Phase Undervoltage Protection .................................................................................................... 4 - 211
Phase Overvoltage Protection ....................................................................................................... 4 - 214
Auxiliary Undervoltage...................................................................................................................... 4 - 217
Auxiliary Overvoltage Protection.................................................................................................. 4 - 220
Neutral Overvoltage Protection .................................................................................................... 4 - 223
Negative Sequence Overvoltage Protection........................................................................... 4 - 226
Volts per Hertz....................................................................................................................................... 4 - 228
Impedance Elements .........................................................................................................................4 - 234
Out-of-step ............................................................................................................................................. 4 - 234
Power Elements ....................................................................................................................................4 - 240
Directional Power................................................................................................................................. 4 - 240
Reactive Power ..................................................................................................................................... 4 - 246
Frequency Elements ...........................................................................................................................4 - 249
Underfrequency.................................................................................................................................... 4 - 249
Overfrequency....................................................................................................................................... 4 - 252
Frequency Rate of Change.............................................................................................................. 4 - 255
Monitoring...................................................................................................................................... 4 - 259
Breaker......................................................................................................................................................4 - 259
Trip and Close Circuit Monitoring ................................................................................................. 4 - 259
Breaker Arcing Current...................................................................................................................... 4 - 267
Breaker Health ...................................................................................................................................... 4 - 270
Broken Rotor Bar..................................................................................................................................4 - 274
Stator Inter-Turn Fault.......................................................................................................................4 - 279
Functions .................................................................................................................................................4 - 284
Power Factor.......................................................................................................................................... 4 - 284
Demand.................................................................................................................................................... 4 - 289
Pulsed Outputs...................................................................................................................................... 4 - 297
Digital Counters .................................................................................................................................... 4 - 300
Harmonic Detection ...........................................................................................................................4 - 304
869 MOTOR PROTECTION SYSTEM - INSTRUCTION MANUAL