CIRCUIT BREAKER AND OPENING AND CLOSING METHOD THEREOF
    3.
    发明申请
    CIRCUIT BREAKER AND OPENING AND CLOSING METHOD THEREOF 有权
    断路器及其开路及闭合方法

    公开(公告)号:US20080156775A1

    公开(公告)日:2008-07-03

    申请号:US11961607

    申请日:2007-12-20

    IPC分类号: H01H33/66

    CPC分类号: H01H33/6662 H01H33/596

    摘要: A circuit breaker comprising a vacuum valve; an electromagnet including a first coil for driving an operating shaft of the vacuum valve toward an opening direction by electromagnetic repulsion, a movable core and a permanent magnet; and an operating mechanism which excites the first coil to close the vacuum valve, holds the vacuum valve closed by an attractive force of the permanent magnet and excites the first coil in a direction reverse to an excitation direction in closing operation to open the vacuum valve. In the circuit breaker, together with the first coil, a second coil which is excited simultaneously with an electromagnetic repulsion coil for electromagnetic repulsion in quick opening operation by electromagnetic repulsion is provided in the electromagnet.

    摘要翻译: 一种包括真空阀的断路器; 电磁体,包括用于通过电磁排斥驱动真空阀的操作轴朝向打开方向驱动的第一线圈,可动芯和永磁体; 以及激励第一线圈关闭真空阀的操作机构,通过永久磁铁的吸引力使真空阀保持关闭,并且在关闭操作中沿与激励方向相反的方向激励第一线圈以打开真空阀。 在断路器中,与第一线圈一起,在电磁体中设置有与通过电磁排斥的快速打开操作中的用于电磁排斥的电磁排斥线圈同时激励的第二线圈。