AQ-F205 Feeder Protection Relay

The AQ-F205 is suitable for any application requiring directional overcurrent and earthfault protection along with voltage and frequency protections. The AQ-F205 comes with complimentary measurement, monitoring, control and communication features. Its standard configuration of 11 digital inputs and 10 relay outputs along with large programmable HMI allows for variety of adaptations.

Highlights

  • Integrated protection, control and measurement
  • Price performance ratio
Protection
Three-phase overcurrent, 4 stages INST, DT or IDMT (50/51)
Earth-fault (sensitive), 4 stages INST, DT or IDMT (50/51N)
Directional overcurrent, 4 stages INST, DT or IDMT (67)
Directional earth-fault, 4 stages INST, DT or IDMT (67N)
Harmonic overcurrent / inrush blocking, 4 stages INST, DT or IDMT (50/51H, 68)
Current unbalance / broken conductor, 4 stages INST, DT or IDMT (46/46R/46L)
High/low impedance restricted earth fault / cable end differential (87N)
Cable thermal protection (49L)
Overvoltage, 4 stages INST, DT or IDMT (59)
Undervoltage, 4 stages INST, DT or IDMT (27)
Zero sequence overvoltage, 4 stages INST, DT or IDMT (59N)
Negative/positive sequence overvoltage, 4 stages INST, DT or IDMT (47)
Over/under frequency, 8 stages INST or DT (81O/81U)
Rate of change of frequency, 8 stages INST or DT or IDMT (81R)
Over/Under/Reverse power (32/37/32R)
Breaker failure protection (50BF/52BF)