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Trip unit and circuit breaker to prevent nuissance tripping
Trip unit and circuit breaker to prevent nuissance tripping
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机译:跳闸装置和断路器,以防止误跳闸
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摘要
A trip unit and circuit breaker including the trip unit include phase protection circuits, a ground fault protection circuit, and, a phase current qualification circuit intermediate the phase protection circuits and the ground fault protection circuit, wherein the phase current qualification circuit includes circuitry for determining a minimum ground fault setting for detected phase currents.
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