AQ-V211 Voltage Protection IED

The AQ-V211 offers a modular voltage protection solution for substations. Voltage and frequency protection with up to five optional I/O or communication cards and powerful logic programming possibility make AQ-V211 optimal for demanding load shedding or automatic transfer applications. The AQ-V211 communicates using various protocols including IEC 61850 substation communication standard.

Highlights

  • 8 frequency stages and 8 setting groups for load shedding
  • Synchrocheck for up to three circuit breakers
  • Anti-islanding protection
Protection
Overvoltage, 4 stages INST, DT or IDMT (59)
Undervoltage, 4 stages INST, DT or IDMT (27)
Negative/positive sequence overvoltage, 4 stages INST, DT or IDMT (47)
Vector jump, 1 stage (78) Over/under frequency, 8 stages INST or DT (81O/81U)
Over/under frequency, 8 stages INST or DT (81O/81U)
Rate of change of frequency, 8 stages INST or DT or IDMT (81R)