Emergency switchboard

  • During the main power failure the switch board which provides the emergency load that supplied from emergency generator.
  • Switch board has two sections , 440v and 220v.
  • In normal conditions, the 440v supply is taken from E/R main switchboard, through a circuit breaker.
  • The circuit breaker trips(open), when there is loss of power. 
  • Immediately Power is supplied from emergency generator through another circuit breaker.
  • To prevent simultaneous closing of both breaker (both emergency and main generator may be running, simultaneously) , an interlock is provided.

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