Separable contact and blast-valve structure for a compressed-gas circuit breaker
    1.
    发明授权
    Separable contact and blast-valve structure for a compressed-gas circuit breaker 失效
    压缩气体断路器的可分离接触和爆破阀结构

    公开(公告)号:US3590187A

    公开(公告)日:1971-06-29

    申请号:US3590187D

    申请日:1970-01-21

    CPC classification number: H01H33/12 H01H3/52 H01H33/83

    Abstract: A separable contact structure is provided for a compressed gas circuit interrupter involving a differential blast valve cooperating with an orifice chamber, or an interrupter chamber, to direct the gas flow during the opening operation. The construction is such that a contact follower initially follows the opening movement of the movable contact, until it is picked up and retracted by the opening movement of a differentially acting blast valve. Subsequently, upon a pressure equalization, the spring-biased blast valve recloses, carrying with it the contact follower, so that in the fully open circuit position of the interrupter the blast valve is closed, and the arc horn follower is extended. Contact is initially made between the movable contact and the extended contact follower contact during the closing stroke. Such structure eliminates erosion on the main stationary contact fingers, and, additionally, simplifies the actuation of the blast valve structure.

    Compressed-gas circuit breaker with readily removable terminal bushing means
    3.
    发明授权
    Compressed-gas circuit breaker with readily removable terminal bushing means 失效
    压缩式气体断路器,具有可自由拆卸的终端布置方式

    公开(公告)号:US3624326A

    公开(公告)日:1971-11-30

    申请号:US3624326D

    申请日:1969-04-04

    CPC classification number: H01H33/82

    Abstract: A high-voltage, high-power compressed-gas circuit interrupter is provided utilizing a grounded metal tank having a gas disposed therein at a relatively low pressure, say, for example 45 p.s.i. A pair of serially related arc-extinguishing units are supported within the metallic grounded tank and utilize a blast of gas directed through an orifice to bring about the extinction of the two series arcs simultaneously. A supporting structure disposed within the tank has lateral supports to properly locate the blast valve and contact housing associated with each arc-extinguishing unit. Additionally, the supporting structure supports an operating cylinder to accommodate a movable piston secured to the moving contact of each interrupter. Terminal bushings are provided at the upper end of the metallic tank and are easily dismantled therefrom by a contact stud and terminal bushing finger arrangement, which easily separates and permits dismantlement at the upper mounting flange portions of the tank for inspection. The high pressure reservoir may be accommodated at the upper end of the tank between the two terminal bushings.

    Circuit interrupter grid structure for oil-break circuit interrupter
    6.
    发明授权
    Circuit interrupter grid structure for oil-break circuit interrupter 失效
    用于断路电路中断器的电路中断网格结构

    公开(公告)号:US3646296A

    公开(公告)日:1972-02-29

    申请号:US3646296D

    申请日:1968-02-06

    CPC classification number: H01H33/75

    Abstract: An oil-type circuit breaker has three poles provided in a unitary tank structure, each pole comprising a pair of serially related grid structures. The grid structures are constructed by nesting a plurality of plate elements, constituting vent passages and oil pockets, within an outer cylindrical glass-filament-wound shell. The stationary contact assembly is so arranged as to have a lengthened finger, which serves as an arcing horn disposed adjacent side lateral vent openings. The vent openings are formed by molded vent elements of particular materials and having a splitter plate interposed therebetween. Additional oil pockets and a lower oil-pocket plug, having an entrance opening, assist in guiding the movable contact rod, and additionally providing considerable turbulence within the oil during the opening operation.

    Abstract translation: 油型断路器具有设置在整体式箱体结构中的三个极,每个极包括一对串联相关的栅格结构。 网格结构是通过在外圆柱形玻璃丝缠绕的外壳中嵌套多个板元件构成通风通道和油袋而构成的。 固定接触组件被布置为具有延长的手指,其用作设置成邻近侧面通气口的电弧喇叭。 通气孔由特定材料的模制排气元件形成,并且在它们之间具有分隔板。 额外的油袋和具有入口的下部油袋塞有助于引导活动接触杆,并且在打开操作期间另外在油中提供相当大的湍流。

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