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9 条记录 (耗时 0.056 秒)

    Current limiting circuit breaker
    5.
    发明授权
    Current limiting circuit breaker 失效
    限流断路器

    公开(公告)号：US4071836A

    公开(公告)日：1978-01-31

    申请号：US721012

    申请日：1976-09-07

    申请人： James W. Cook ,  Joseph M. Khalid ,  Clark L. Oster

    发明人： James W. Cook ,  Joseph M. Khalid ,  Clark L. Oster

    IPC分类号： H01H77/10

    CPC分类号： H01H77/10

    摘要： A current limiting circuit breaker having for each pole, a pair of main contacts separable upon operation of a thermally and electromagnetically operable tripping device and a pair of auxiliary contacts for current limiting in series with the main contacts and in parallel with a transformable resistor having a positive temperature coefficient of resistance. The auxiliary contacts are separable when an electromagnet is energized by a fault current which simultaneously energizes a field magnet to produce a transverse magnetic field across the auxiliary contacts and the arc formed between them when separating. This simultaneous action of electromagnet and field magnet coacting for rapid contact separation and lengthening of the arc upon flow of a fault current serves to increase arc voltage almost instantaneously to that of the source, about which time the fault current is totally shunted into the resistor. The auxiliary contacts are carried on a pair of minimum inertia movable contact blades to facilitate rapid separation of the auxiliary contacts. The minimum inertia contact blades are elongated between a pivot point and the point at which the contacts are mounted, where they terminate without providing an arc runner portion.

    摘要翻译： 一种用于每个极的限流断路器，一对主触头在操作热和电磁可操作的跳闸装置时可分离，并且一对辅助触点用于与主触点串联限流，并与具有 正温度系数的电阻。 当电磁铁由故障电流通电时，辅助触点可分离，同时激励磁场磁体，以在分离时在辅助触点之间产生横向磁场，并在它们之间形成电弧。 在故障电流流动时，电磁体和磁场磁共振的同时动作用于快速接触分离和电弧延长，用于几乎瞬时地将电弧电压提高到源的电压，故障电流在该时间内完全分流到电阻器中。 辅助触点承载在一对最小惯性活动触点刀片上，以便于辅助触点的快速分离。 最小惯性接触片在枢转点和接触点安装点之间是细长的，在那里它们终止而不提供弧流道部分。

    Arrangement for arc transfer in high amperage molded case circuit breaker
    7.
    发明授权
    Arrangement for arc transfer in high amperage molded case circuit breaker 失效
    高安培型塑壳断路器中电弧转移的布置

    公开(公告)号：US4490593A

    公开(公告)日：1984-12-25

    申请号：US493116

    申请日：1983-05-09

    申请人： James W. Cook

    发明人： James W. Cook

    IPC分类号： H01H1/22 ,  H01H1/58 ,  H01H9/38 ,  H01H9/46 ,  H01H33/20

    CPC分类号： H01H9/46 ,  H01H1/226 ,  H01H1/5833 ,  H01H9/38

    摘要： Arc control in a high amperage molded case circuit breaker is provided by a steel horn for each of a plurality of contact blades for each phase. The horn has a portion extending into a U-shaped recess in a steel arc runner plate. As the contacts separate, the portion travels close to one wall of the recess and then close to the other wall to transfer the arc from the contacts first to the one wall and then to the other wall which is located adjacent the arc suppressor assembly. A respective adjustment member extending through each horn controls the spacing between the blades and a contact carrier to in turn control the opening sequence of the contacts for minimizing arcing across certain contacts. Arc suppressor plates of alternating length are arranged in an arc corresponding to blade travel and define passageways having their larger exits aligned with respective vents defined by a molded insulator engaged in the wall of the base.

    摘要翻译： 在高安培数的塑壳断路器中的电弧控制由用于每相的多个接触叶片中的每一个的钢制喇叭提供。 喇叭具有延伸到钢制弧形板中的U形凹部的部分。 当触头分离时，该部分靠近凹部的一个壁移动，然后靠近另一个壁，以将电弧从触头首先传递到一个壁，然后传递到位于电弧抑制器组件附近的另一个壁。 延伸穿过每个喇叭的相应的调节构件控制叶片和接触载体之间的间隔，从而进一步控制接触件的打开顺序，以最小化穿过某些接触件的电弧。 交替长度的电弧抑制板被布置成对应于叶片行进的圆弧，并且限定具有较大出口的通道，其排列与由接合在基座的壁中的模制绝缘体限定的相应通风口对准。