AUTOMATED GROUND FAULT INTERRUPT TESTER
    13.
    发明申请
    AUTOMATED GROUND FAULT INTERRUPT TESTER 审中-公开
    自动接地故障中断测试仪

    公开(公告)号:WO2017058668A1

    公开(公告)日:2017-04-06

    申请号:PCT/US2016/053544

    申请日:2016-09-23

    CPC classification number: H02H3/162 G01R31/025 H02H3/17 H02H3/335

    Abstract: A system includes a hot wire and a neutral wire configured to establish a closed circuit between a power source and a load. The system further includes first and second transformers as well as a sensor. The first current transformer is coupled to the hot wire and is configured to introduce a first test current, with a first polarity, into the hot wire. The second current transformer is coupled to the neutral wire and configured to substantially simultaneously introduce a second test current into the neutral wire. The second test current has the same polarity as the first test current. The sensor is configured to sense an asymmetry between the first and second test currents and is further configured to cause interruption of the closed circuit upon sensing the asymmetry.

    Abstract translation: 系统包括热线和中性线,其配置成在电源和负载之间建立闭合电路。 该系统还包括第一和第二变压器以及传感器。 第一电流互感器耦合到热丝,并且被配置为将具有第一极性的第一测试电流引入到热丝中。 第二电流互感器耦合到中性线,并被配置为基本上同时将第二测试电流引入中性线。 第二测试电流具有与第一测试电流相同的极性。 传感器被配置为感测第一和第二测试电流之间的不对称性,并且还被配置为在感测到不对称性时引起闭合电路的中断。

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