METHOD AND DEVICE FOR SWITCHING A CONTACTOR
    3.
    发明公开
    METHOD AND DEVICE FOR SWITCHING A CONTACTOR 有权
    方法和装置用于开关接触器

    公开(公告)号:EP2856483A1

    公开(公告)日:2015-04-08

    申请号:EP12729905.5

    申请日:2012-05-30

    申请人: ABB Research Ltd.

    IPC分类号: H01H9/56

    CPC分类号: H01H9/563 Y10T307/944

    摘要: The present invention relates to a low voltage contactor (1) for connecting and disconnecting a three-phase load (2) to an electric power including a coil (16), main contacts (12) operated by the coil (10) and an electronic control circuit (20) for controlling voltage supplied to the coil. The electronic control circuit includes a pre-arranged time point selection scheme (22) and is further adapted to select a time point from the pre-arranged time point selection scheme (22) as a time delay, and initiate an instant opening command based on the selected time point.