Provided is a leakage current braking apparatus for an electric vehicle charger capable of performing self-diagnosis in real time in the electric vehicle charger. The leakage current braking apparatus comprises: a plurality of switches connected respectively to a current transfer line and a feedback transfer line between an external power source and a load; a diagnostic unit connected to a diagnostic line so as to output diagnostic current; an earth leakage sensor arranged to encompass the current transfer line, the feedback transfer line, and the diagnostic line, and sensing leakage current therefrom; and a control unit controlling opening/closing operations of the plurality of switches according to a comparison result between the leakage current and a reference value so as to control the connection between the external power source and the load.
전기자동차 충전기에서 실시간으로 자가진단을 수행할 수 있는 전기자동차 충전기의 누전차단장치가 제공된다. 누전차단장치는, 외부전원과 부하 사이의 전류전송라인 및 피드백전송라인에 각각 연결된 다수의 스위치, 진단라인에 연결되어 진단전류를 출력하는 진단부, 전류전송라인, 피드백전송라인 및 진단라인을 둘러싸며 배치되고, 이들로부터 누설전류를 감지하는 누전센서 및 누설전류와 기준값의 비교 결과에 따라 다수의 스위치의 개폐동작을 제어하여 외부전원과 부하의 연결을 제어하는 제어부를 포함한다.
LEAKAGE CURRENT BRAKING APPARATUS FOR ELECTRIC VEHICLE CHARGER
전기자동차 충전기의 누전차단장치
04.07.2018
Patent
Elektronische Ressource
Koreanisch
EARTH LEAKAGE CIRCUIT BREAKER FOR ELECTRIC VEHICLE CHARGER
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