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1. 发明授权

US3560682A Vacuum interrupter with shunting main contact structure and series disconnecting contact structure 失效
标题翻译：真空中断器主要接触结构和断路接头结构系列
公开(公告)号：US3560682A
公开(公告)日：1971-02-02
申请号：US3560682D
申请日：1966-11-07
申请人： SIEMENS AG
发明人： KOHLER WERNER , GRUNEFELD HANS-JOACHIM
IPC分类号： H01H33/12 , H01H33/666 , H01H9/38
CPC分类号： H01H33/6661 , H01H33/122
摘要： A vacuum-type circuit interrupter is provided having an electrically shunting main contact structure, comprising two spaced main stationary contacts associated therewith, and located externally of the vacuum envelope. The spaced main stationary contacts are electrically connected to the opposite terminals of the vacuum interrupter unit. A movable main bridging contact electrically bridges the two spaced main stationary contacts in the closed-circuit position of the device to carry heavy current loads and to thereby relieve the duty imposed upon the separable contacts of the vacuum interrupter unit. Additionally, the movable main bridging contact separates from one of said two spaced stationary main contacts to provide a series disconnecting gap for more adequately withstanding high voltages in the open-circuit position of the device. An operating mechanism is provided including a rotatable crank arm having the pivotal point of attachment of the moving contact of the vacuum interrupter unit positioned more closely to the axis of rotation of the crank arm than is the pivotal point of attachment of the movable main bridging contact. This varies the distance of opening travel between the two contacts. A lostmotion connection if provided between the operating link for the vacuum interrupter unit and a member secured to the movable operating rod of the vacuum-interrupter unit. This is released by camming at the end of the opening stroke to permit reclosure of the separable contacts of the vacuum interrupter unit by spring means. The disconnecting gap may be provided with a plurality of contiguous insulating plates to provide a corrugated internal surface for a greater electrical creepage path across the series disconnecting gap in the open-circuit position of the interrupting device.

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