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Bay Control for AIS Transmission Substations

The solution warrants operational safety in AIS transmission substations. It comprises all components required for the local supervision and control of a complete feeder including the circuit breaker, all disconnectors and earthing switches.

The separation of functionality and components in the control cubicle and marshaling kiosk warrants optimized wiring between them and to the switchgear itself.

Typical applications

  • AIS transmission substations
  • Single or double busbars plus transfer bus
  • One and a half breaker configurations

Features
  • Guided local control of all motorized switching objects via HMI of the REC 670 bay control IED
  • Two-step operation (select-before-operate)
  • Bay, station and double-operation interlocking
  • Station and double-operation interlocking information via hardwired station bus or IEC 61850 GOOSE messages
  • Primary and secondary system super-vision and alarm visualization
  • Circuit breaker control and supervision
  • Disconnector and earthing switch control and supervision
  • IEC 61850-8-1 interface

Options
  • Transformer voltage regulator
  • Back-up protection
  • Marshalling kiosk for outdoor installation
  • CB emergency control in marshalling kiosk
  • Integration of non-conventional instrument transformers or stand-alone merging units using IEC 61850-9-2 process bus
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