AQ-S215 Bay control device


The AQ-S215 bay control device can be applied to various types of control applications. AQ-S215 comes with full current, voltage, power and energy measurement capabilities, and the relay can be equipped with up to three (3) I/O or communication cards, depending on the requirements of your application. The logic programming is powerful and easy to use, and it further expands the device’s application range. The HMI is large and can be freely programmed, and provides a quick visualization of the status of objects, alarms and events. AQ-S215 communicates using various protocols, including the IEC 61850 substation communication standard.


  • Smart grid control.
  • Benefits of a smart distributed solution:
    • reduced wiring,
    • operational redundancy,
    • bay-oriented alarms and status windows,
    • an integrated disturbance recorder function.

Technical data

  • Resistance temperature detectors (RTD)
  • Voltage memory
  • Programmable stage (PGx>/<; 99)

  • Number of objects to control and monitor: 10
  • Number of indicators to monitor: 5
  • Number of setting groups: 8
  • Auto-recloser (0 → 1; 79)
  • Synchrocheck (ΔV/Δa/Δf; 25)

  • Phase, sequence and residual currents (IL1, IL2, IL3, I01, I02)
  • Phase, sequence and residual voltages (UL1, UL2, UL3, U12, U23, U31, U0)
  • Frequency (f)
  • Power (P, Q, S, pf) and Energy (E+, E-, Eq+, Eq-)
  • Power and energy class 0.5
  • Power and energy measurement accuracy of up to 0.2 % (optional)
  • Current transformer supervision
  • Voltage transformer supervision (60)
  • Total harmonic distortion (current)
  • Total harmonic distortion (voltage)
  • Fault locator (21FL)
  • Measurement recorder
  • Measurement value recorder
  • Event recorder (max. 15 000 permanent event records)
  • Disturbance recorder (max. 100 records á 5 seconds at 3.2 kHz sampling)

  • Current inputs: 5
  • Voltage inputs: 4
  • Digital inputs (fixed): 3
  • Digital outputs (fixed): 5
  • Number of empty slots: 3
  • Digital inputs: +8/16/24 (optional)
  • Digital outputs: +5/10 (optional)
  • Milliampere I/O module (4 mA outputs + 1 mA input)
  • Communication media (see "Communication" below)
  • External I/O modules (see "Accessories" below)

  • Communication inputs
  • RJ-45 100 Mbps Ethernet (front panel, fixed)
  • RJ-45 100 Mbps Ethernet and RS-485 (rear panel, fixed)
  • 2 x RJ-45 100 Mbps Ethernet with an IRIG-B input (optional)
  • 2 x ST 100 Mbps Ethernet with an IRIG-B input (optional)
  • 2 x LC 100 Mbps Ethernet (PRP/HSR) (optional)
  • RS-232 serial fiber (PP/PG/GP/GG) (optional)
  • Communication protocols
  • IEC 61850 (edition 1)
  • IEC 60870-5-101/104
  • IEC 60870-5-103
  • Modbus/RTU and Modbus/TCP
  • DNP3
  • SPA

  • AX007 External 6-channel 2-/3-wire RTD input module (pre-configured)
  • AX008 External 8-channel thermocouple and mA input module (pre-configured)
  • AX009 Raising frame (87 mm)
  • AX010 Raising frame (40 mm)
  • AX011 Combiflex frame
  • AX012 Wall mounting bracket

Additional material

Application Drawing

An application image for AQ-S215 bay control device, with one version drawn according to IEC standard symbols and the other according to IEEE/ANSI standard symbols.

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