AQ200 Series – AQ-V211 Busbar Protection Relay

The AQ V211 Busbar Protection Relay 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.

 

Key features of the AQ V211 Busbar Protection Relay

Protection functions

  • 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)
  • Vector jump, 1 stage (78)
  • Over/under frequency, 8 stages INST or DT (81O/81U)
  • Rate of change of frequency, 8 stages INST or DT or IDMT (81R)

Measuring and monitoring

  • Voltage measurements (UL1-UL3, U12-U31, U0, SS)
  • Voltage THD and harmonics (up to 31st)
  • Disturbance recorder (3.2 kHz)
  • Fuse failure (VTS)
  • Trip circuit supervision (TCS)

Hardware

  • Voltage inputs: 4
  • Digital inputs: 3 (standard)
  • Output relays: 5+1 (standard)

Event recording

  • Non-volatile disturbance records: 100
  • Non-volatile event records: 15000

Communication media

  • RJ 45 Ethernet 100Mb (front standard)
  • RJ 45 Ethernet 100Mb and RS 485 (rear standard)
  • Double LC Ethernet 100Mb (option)
  • RS232 + serial fibre PP/PG/GP/GG (option)