Portable test apparatus for low current circuit breakers
    1.
    发明授权
    Portable test apparatus for low current circuit breakers 失效
    低电流断路器便携式测试装置

    公开(公告)号:US4998067A

    公开(公告)日:1991-03-05

    申请号:US418572

    申请日:1989-10-10

    IPC分类号: G01R31/327

    CPC分类号: G01R31/3277 G01R1/04

    摘要: Portable testing apparatus for low current circuit breakers which enables short circuit and constant current tests to be conducted at the breaker panel. A first container includes a parallel array of resistive loads each under control of a corresponding relay. Low voltage control circuitry is provided in a second container and permits variation of the load appearing in series with the circuit breaker under test. The short circuit test can be performed at the first container which operates at the line voltage.

    摘要翻译: 用于低电流断路器的便携式测试装置,可在断路器面板上进行短路和恒流测试。 第一容器包括各自在相应的继电器的控制下的并联的电阻性负载阵列。 低压控制电路设置在第二容器中,并允许与被测断路器串联出现的负载变化。 短路测试可以在以线路电压工作的第一个容器上进行。