Bi-directional direct current switching apparatus having arc
extinguishing chambers alternatively used according to polarity applied
to said apparatus
    1.
    发明授权
    Bi-directional direct current switching apparatus having arc extinguishing chambers alternatively used according to polarity applied to said apparatus 失效
    具有根据应用于设备的极性相应使用的弧形灭弧室的双向直流电流开关装置

    公开(公告)号:US5138122A

    公开(公告)日:1992-08-11

    申请号:US574839

    申请日:1990-08-29

    摘要: Direct current switching apparatus having two arc extinguishing chambers located in a common transverse plane, one chamber being divided into separate laterally spaced portions disposed below the other chamber, a pair of spaced conductors each having a contact element and an arc runner extending from near the contact, the arc runners being curved and disposed in a convex mirror-imate relationship to each other between the laterally spaced portions, distal ends of each arc runners providing a divergent path into the other chamber, a conductor disposed at outboard sides of the laterally spaced arc chamber portions cooperating with concave sides of the arc runners to provide divergent paths into the spaced arc chamber portions, power supply terminals connected to the respective spaced conductors, magnetic plates disposed in front and in back of the arc chambers having portions providing a magnetic path externally around the chambers, permanent magnets magnetically coupled to at least one of the magnetic plates providing a magnetic field in the plates and across the arc chambers in a forward direction, a movable contact movable normal to the forward direction into and out of bridging engagement with the stationary contact elements, and an electromagnetic drive motor disposed coextensive with the arc extinguishing chambers, coupled at a lower end to the movable contact. Arcs established between the stationary and movable contact elements are moved from the contacts into either arc extinguishing chamber by the magnetic field coacting with current in the arc to generate forces which move the arc.

    Bi-directional direct current switching apparatus having bifurcated arc
runners extending into separate arc extinguishing chambers
    2.
    发明授权
    Bi-directional direct current switching apparatus having bifurcated arc runners extending into separate arc extinguishing chambers 失效
    双向直流电流切换装置,具有扩展到独立灭弧室的双向弧形运行器

    公开(公告)号:US5130504A

    公开(公告)日:1992-07-14

    申请号:US574702

    申请日:1990-08-29

    摘要: Direct current switching apparatus having front and rear arc extinguishing chambers substantially coextensive, the rear chamber being separated into two laterally spaced arc extinguishing chambers, each arc extinguishing chamber comprising rows of non-magnetic parallel splitter plates, a pair of spaced conductors each having a stationary contact element spanning both the front and rear arc extinguishing chambers, power supply terminals connected to the respective spaced conductors, magnetic plates disposed in front of the front chamber and in back of the back chamber having magnetic means providing a magnetic path externally around the chambers, permanent magnets magnetically coupled to at least one of the magnetic plates providing a magnetic field across the respective chambers, a movable contact movable normal to a front to rear direction into and out of bridging engagement with the stationary contacts, and an electromagnetic drive motor disposed coextensive with said arc extinguishing chambers coupled at a lower end to the movable contact. Bifurcated arc runners of the conductors lead from the stationary contact elements into respective front and rear chambers, and a conductor surrounds the laterally spaced arc extinguishing chambers to cooperate with the respective arc runners therein. Arcs established between the stationary and movable contact elements are moved from the contacts into either the front or rear chambers by the magneteic field according to polarity of the power applied to the respective terminals. The electromagnetic motor is readily and inexpensively manufacatured and assembled by utilizing molded housing parts to position and retain elements of the motor. The apparatus is particularly well suited for high voltage, high current applications requiring lightweight, compact apparatus.