Importance

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Abstract

A digital electric leakage detecting and monitoring device includes a leakage current detection element connected to an AC power supply loop. When an outgoing current supplied from an AC line source to a load is not equal to a backflow current flowed from the load back to the AC line source, a leakage signal is generated by the leakage current detection element and sent to a microprocessor via a leakage signal processing circuit, so that the microprocessor generates a switch control signal to switch a switch unit from a close-circuit position to an open-circuit position and thereby cuts off the power supplied from the AC line source to the load. A switch status monitoring circuit is parallelly connected to the load for monitoring the switch status of the switch unit, and timely generating and sending a switch status signal to the microprocessor.

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First Claim