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circuit breaker leakage test factorys

Insulation Power Factor Testing MV Indoor Circuit Breakers· PDF filedielectrically using an AC high potential test set at the factory. Therefore, Power Factor testing is not a recommended practice. Proper cleaning and maintence is recommended with a field hipot test in accordance with IEEE C37.20.2 performed before placing the circuit breaker back into service. Michael Wactor, P.E. Technical Director – R&D

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