What is preferential trip?

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Asked on June 21, 2021
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Preferential trips are designed to disconnect the non-essential circuits (breakers controlling air conditioning, ventilation fans, galley equipment’s) in the event of overload or partial failure of power supply, with the aim of preventing operation of the main breaker trip and loss of power on essential trip. The relays will disconnect the non-essential circuit at 5(galley exhaust fan, vent fans, air conditioning etc.) and 10 seconds (refrigerating panel) time delay and if the overload persists will trip the main circuit breaker at 15 seconds interval.

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Posted by marinetales
Answered on June 21, 2021