• Posts Tagged ‘fault current’

    Transfer Switch Withstand Ratings: 3-cycle or 30-cycle?

    by  • October 11, 2011 • FAQ's, General • 0 Comments

    How and when to apply “3-cycle rated” vs. “30-cycle rated” transfer switches should be a rather important consideration for a design engineer.  A coordination study is a critical element that must go hand-in-hand with the design and specification of a safe and reliable emergency power system. Some basic definitions Interrupting ratings  – the highest current at rated voltage that a device is intended […]

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