AQ-G215 Generator Protection IED

The AQ-G215 generator protection IED is well suited for machines requiring complete generator protections. It can be combined with AQ-T216 to protect larger machines requiring differential protection and greater protection redundancy. The AQ-G215 communicates using various protocols including IEC 61850 substation communication standard.

Highlights

  • Cost efficient synchronous machine protection
Protection
Three-phase overcurrent, 2 stages INST, DT or IDMT (50/51)
Earth-fault (sensitive), 2 stages INST, DT or IDMT (50/51N)
Harmonic overcurrent / inrush blocking, 1 stage INST, DT or IDMT (50/51H, 68)
Current unbalance / broken conductor, 2 stages INST, DT or IDMT (46/46R/46L)
High/low impedance restricted earth fault / cable end differential * (87N)
Directional overcurrent, 4 stages INST, DT or IDMT (67)
Directional (sensitive) earth-fault, 4 stages INST, DT or IDMT (67N)
Overvoltage, 2 stages INST, DT or IDMT (59)
Undervoltage, 2 stages INST, DT or IDMT (27)
Zero sequence overvoltage, 2 stages INST, DT or IDMT (59N)
Positive/Negative sequence overvoltage, 2 stages INST, DT or IDMT (59N/47)
Over/under frequency, 4 stages INST or DT (81O/81U)
Rate of change of frequency, 4 stages INST or DT or IDMT (81R)
Loss of field (40)
Voltage restrained overcurrent (51V)
Field ground / 100% stator earth-fault (64S)
Over/Under/Reverse power (32/37/32R)
Generator thermal overload (49G/49RTD)
Under impedance (21U)
Volts per hertz (24)
Breaker failure protection (50BF/52BF)
Arc protection (option) (50ARC/50NARC)