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Abstract

A leakage current detection interrupter (LCDI) with self-testing function, which includes: a leakage current detection unit, including multiple current-carrying wires and at least one leakage current detection wire for detecting a leakage current of the current-carrying wires; a phase protection unit, coupled to at least one current-carrying wire on the input side of the multiple current-carrying wires, and coupled to at least one current-carrying wire on the output side of the multiple current-carrying wires via the leakage current detection unit, to form a current loop; wherein the phase protection unit can generate a control signal to disconnect the electrical coupling between the LCDI and the power source. By using a temperature controlled module, the leakage current detection unit and the phase protection unit, an LCDI with self-testing function is achieved. When there is a leakage current in the current-carrying wires, or the current-carrying wire is open, or the temperature of the electrical appliance exceeds a predefined range, or the leakage current detection wire is broken, the LCDI can disconnect its electrical coupling with the power source, ensuring the safety of the appliance and enhancing the quality of the electrical grid.

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First Claim