Method for checking electric contacts of an enclosed-type switching
device and an auxiliary apparatus for use with the switching device to
use the method
    4.
    发明授权
    Method for checking electric contacts of an enclosed-type switching device and an auxiliary apparatus for use with the switching device to use the method 失效
    用于检查封闭式开关装置的电触头的方法和与开关装置一起使用的辅助装置以使用该方法

    公开(公告)号:US4263491A

    公开(公告)日:1981-04-21

    申请号:US889535

    申请日:1978-03-23

    CPC分类号: G01R31/02 H01H1/0015

    摘要: In an enclosed-type switching device having at least a pair of electric contacts, a method for checking the contacts without visual inspection wherein with the contacts closed, the resistance value between outer terminals connected to the contacts is measured and compared with a reference resistance value, so that the result of comparison is used to determine the degree of damage of the contacts. Also disclosed is an auxiliary apparatus for use with an enclosed-type switching device to facilitate application of the above-mentioned method, especially when the switching device is equipped with a plurality of parallel-connected sequentially closed or opened contact pairs. The auxiliary apparatus is arranged to interrupt the sequential operation of the contact pairs so that the resistance is measured during the interruption of the operation.

    摘要翻译: 在具有至少一对电触点的封闭式开关装置中,用于在不进行目视检查的情况下检查触点的方法,其中触点闭合时,测量与触点相连接的外部端子之间的电阻值,并将其与参考电阻值进行比较 ,因此比较结果用于确定触点的损坏程度。 还公开了一种用于封闭式开关装置的辅助装置,以便于应用上述方法,特别是当开关装置配备有多个并联连接的顺序关闭或开放的触点对时。 辅助装置被布置成中断触点对的顺序操作,使得在操作中断期间测量电阻。