Switchgear apparatus contact assembly including slot and ferromagnetic insert for enhancing arc extinguishing characteristics
    1.
    发明授权
    Switchgear apparatus contact assembly including slot and ferromagnetic insert for enhancing arc extinguishing characteristics 有权
    开关装置接触组件包括用于增强灭弧特性的槽和铁磁插入件

    公开(公告)号:US06265685B1

    公开(公告)日:2001-07-24

    申请号:US09453033

    申请日:1999-12-02

    IPC分类号: H01H3304

    CPC分类号: H01H1/2041 H01H9/44 H01H9/443

    摘要: A switch comprises a long, slender stationary contact means and a movable contact means moving between an open position and a closed position. The contact zone of the contact means is separated from the electrical connection zone by a slot which opens out on the side where the movable contact means are situated in the open position. The depth of the slot is sufficient so that, when opening takes place, the current lines passing through the contact means are curved and run approximately parallel to the flank of the slot. This arrangement prevents the foot of the electrical arc from being directed towards the free end of the contact means, away from the arc extinguishing chamber.

    摘要翻译: 开关包括长而细长的固定接触装置和在打开位置和关闭位置之间移动的可动接触装置。 接触装置的接触区域通过在可动接触装置位于打开位置的一侧开口的槽与电连接区分开。 槽的深度足以使得当打开时,通过接触装置的电流线弯曲并且大致平行于槽的侧面延伸。 这种布置防止电弧的脚部朝向灭弧室远离接触装置的自由端。

    Selective trip unit for a multipole circuit breaker
    2.
    发明授权
    Selective trip unit for a multipole circuit breaker 失效
    多极断路器的选择性跳闸单元

    公开(公告)号:US5831499A

    公开(公告)日:1998-11-03

    申请号:US968017

    申请日:1997-11-12

    IPC分类号: H01H71/34 H01H71/44 H01H75/00

    CPC分类号: H01H71/44 H01H71/34

    摘要: A selective magnetic trip unit comprises a fixed magnetic armature located facing a movable magnetic armature and a damping device with a blade mounted on the movable magnetic armature. The damping device is designed to be in an inactive state up to an intermediate non-tripping position when the movable magnetic armature is attracted by polar parts of the fixed magnetic armature during a first travel, switching to the active state resulting from a deformation of the damping device during a second travel of the movable armature between the intermediate position and the final attraction position causing tripping of the circuit breaker.

    摘要翻译: 选择性磁跳闸单元包括面向可移动磁性衔铁的固定磁性衔铁和具有安装在可移动磁性衔铁上的叶片的阻尼装置。 阻尼装置设计成处于非活动状态直到中间非跳闸位置,当可移动磁性衔铁在第一行进期间被固定磁性衔铁的极性部分吸引时,切换到由于 在可移动衔铁在中间位置和最终吸引位置的第二行进期间阻尼装置引起断路器跳闸。