AQ-V211 Voltage protection IED

The AQ-V211 voltage protection IED offers a modular voltage protection solution for substations. The relay includes both voltage and frequency protections as well as powerful logic programming, and you can add up to five (5) I/O or communication cards. All this makes AQ-V211 optimal for demanding load shedding and automatic transfer applications. AQ-V211 communicates using various protocols, including the IEC 61850 substation communication standard.

 

Highlights

  • Eight (8) frequency stages and eight (8) setting groups for load shedding
  • Synchrocheck for up to three (3) circuit breakers
  • Optional synchronizer function
  • Anti-islanding protection.


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  • Overvoltage (U>; 59) - 4 stages (INST, DT or IDMT)
  • Undervoltage (U<; 27) - 4 stages (INST, DT or IDMT)
  • Neutral overvoltage (U0>; 59N) - 4 stages (INST, DT or IDMT)
  • Sequence voltage (U1/U2>/<; 47/27P/59PN) - 4 stages (INST, DT or IDMT)
  • Circuit breaker failure protection (CBFP; 50BF/52BF)
  • Overfrequency and underfrequency (f>/<; 81O/81U) - 8 stages (INST or DT)
  • Volts-per-hertz overexcitation (V/Hz>; 24)
  • Voltage memory
  • Programmable stage (PGx>/<; 99)
  • Number of objects to control and monitor: 5
  • Number of indicators to monitor: 5
  • Number of setting groups: 8
  • Switch-on-to-fault
  • Vector jump (Δφ; 78)
  • Synchrocheck (ΔV/Δa/Δf; 25)
  • Synchronizer (ΔV/Δa/Δf; 25) (optional)
  • Phase, sequence and residual voltages (UL1, UL2, UL3, U12, U23, U31, U0)
  • Voltage transformer supervision (60)
  • Disturbance recorder (max. 15 000 permanent event records)
  • Measurement recorder
  • Measurement value recorder
  • Voltage inputs: 4
  • Digital inputs (fixed): 3
  • Digital outputs (fixed): 5
  • Options (5 slots)
  • Digital inputs: +8/16/24/32/40
  • Digital outputs: +5/10
  • RTD & mA input module (8 RTD inputs OR 4 RTD inputs + 2 mA inputs)
  • Milliampere I/O module (4 mA outputs + 1 mA input)
  • Communication media (specified in the "Communication" tab)
  • RJ-45 100 Mbps Ethernet (front panel, fixed)
  • RJ-45 100 Mbps Ethernet and RS-485 (rear panel, fixed)
  • Double LC 100 Mbps Ethernet (optional)
  • RS-232 & serial fibre (PP/PG/GP/GG) (optional)
  • Communication protocols
  • IEC 61850
  • IEC 60870-5-101/104
  • IEC 60870-5-103
  • Modbus/RTU and Modbus/TCP
  • DNP3
  • SPA