Preferential trip is a kind of electrical arrangement on ship which is designed to disconnect the non essential circuit that is non essential load from the main bus bar in case of partial failure or overload of the main supply the non essential circuit all loads on ship are air conditioning, exhaust and ventilation fans, and galley equipments which can be disconnected mementarily and can be connected again after fault finding.
The main advantage of preferential trip is that it helps in preventing the operation of main circuit breaker trip and loss of power on essential services and prevents blackout and overloading of generator.
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