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    AUTOMATED GROUND FAULT INTERRUPT TESTER
    21.
    发明申请
    AUTOMATED GROUND FAULT INTERRUPT TESTER 审中-公开

    公开(公告)号：US20170093147A1

    公开(公告)日：2017-03-30

    申请号：US15271719

    申请日：2016-09-21

    Applicant: Cooper Technologies Company

    Inventor： Benjamin Avery Freer ,  Stephan P. Iannce ,  Joseph Michael Manahan

    IPC: H02H3/16 ,  G01R31/02

    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.

    Systems And Methods For Testing Ground Fault Circuit Interrupter Breakers
    25.
    发明申请
    Systems And Methods For Testing Ground Fault Circuit Interrupter Breakers 审中-公开

    公开(公告)号：US20170261558A1

    公开(公告)日：2017-09-14

    申请号：US15448211

    申请日：2017-03-02

    Applicant: Cooper Technologies Company

    Inventor： Benjamin Avery Freer

    IPC: G01R31/327 ,  H01H9/54

    CPC classification number: G01R31/3277 ,  G01R31/2827 ,  H01H9/54 ,  H01H83/04

    Abstract: A testing circuit assembly can include a first variable resistive load configurable for a range of electrical resistances, where the first variable resistive load is configured to couple to at least one first ground fault circuit interrupter (GFCI) breaker and a current source. The testing circuit assembly can also include a first local controller coupled to the first variable resistive load, where the first local controller controls the first variable resistive load to simulate a range of fault currents, corresponding to the range of electrical resistances, flowing to the at least one first GFCI breaker to determine at least one actual trip point of the at least one first GFCI breaker. Each electrical resistance in the range of electrical resistances can correspond to a fault current in the range of fault currents.

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