EMERGENCY SWITCHBOARD

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 what is Em'cy switchboard?

  • It is a switchboard which distributes emergency load that power is supplied from emergency generator during main switchboard failure.
  • It has two sections. one for 440V another is 220V.
  • Under normal conditions, 440V supply is taken from Engine Room MSB through a circuit breaker.
  • when main power is lost, this circuit breaker is tripped (opened)
  • Emergency generator comes into action and supplies power through another circuit breaker. 
  • An interlock is given to prevent closing of both breakers simultaneously.

Em'cy switchboard distribution:

  1. Em'cy bilge p/p (440V)
  2. sprinkler system (440V)
  3. one of the steering gear motor(440V)
  4. Navigation equipment.(220V)
  5. Radio Communication.(220V)
  6. Transformed and rectified supply to battery system (220V)
  7. Transitional em'cy power battery(em'cy lights for 30 mins)
  8. Low power DC system battery(Alarms and control system)

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