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Complex installation - multiple grids

Description:

  • Essential load is fed by two mains feeders during normal operation to achieve maximum reliability of the power delivery. Bus-tie breaker (BTB) is closed.
  • Complex switching algorithm running in external PLC defines which breakers are opened and which are closed independent on availability of two mains and gen-sets.
  • Reverse synchronizing on both feeders and on bus-tie breaker is accomplished by 5 InteliMains NT modules controlled by external PLC.
  • Active and reactive load-sharing can operate in two modes:
    • Sharing the load between all running gensets - if BTB is closed
    • Sharing the load in two independent groups - if BTB is opened
  • Automatic power dependant start/stop can operate in two modes as well:
    • Running on all gen-sets - if BTB is closed
    • Running in two independent groups - if BTB is opened
  • All controllers are interconnected by one CAN bus all the time, disregarded if BTB is closed or open, no need for relays reconnecting the CAN bus.
  • Complete system is remotely controlled and supervised from Control room connected via company LAN and IG-IB to all controllers.

Scope of supply: