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    Switchgear
    1.
    发明公开
    Switchgear 失效
    开关

    公开(公告)号：EP0483121A2

    公开(公告)日：1992-04-29

    申请号：EP92200220.9

    申请日：1987-06-05

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Hamano, Suenobu, c/o Chuo Kenkyusho Mitsub. Denki ,  Sasao, Hiroyuki, c/o Chuo Kenkyusho Mitsub. Denki ,  Murai, Yutaka, c/o Chuo Kenkyusho Mitsub. Denki ,  Hasegawa, Hirosi, c/o Marugame Seisakusho ,  Maruyama, Tosimasa, c/o Marugame Seisakusho ,  Wada, Yuichi, c/o Chuo Kenkyusho Mitsub. Denki

    IPC分类号： H01H33/98 ,  H01H33/18

    CPC分类号： H01H33/182 ,  H01H33/982

    摘要： A switchgear comprises, in a housing containing an arc extinguishing gas, a pair of separable contacts 2, 3 defining therebetween an arcing region in which an electric arc is generated when the contacts are separated. A cylindrical wall 6 and an insulating nozzle 22 are provided for defining a gas storage chamber 9 around the stationary contact, communicating with the arcing region, for storing the arc extinguishing gas to be increased in pressure by heat from the arc. The insulating nozzle defines an opening through which the movable contact 3 movably extends and through which the pressurized arc extinguishing gas flows. Around the arcing region a magnet 21 is disposed for generating a magnetic field in the opening of the gas storage chamber for rotating and elongating the electric arc generated in the arcing region upon current interruption. The magnet is magnetized radially. A novel design of the nozzle enhances the arc-extinguishing capability.

    摘要翻译： 开关装置在包含灭弧气体的壳体中包括一对可分离触点2,3，所述一对可分离触点2,3在其间限定了当触点分离时产生电弧的电弧区域。 圆柱形壁6和绝缘喷嘴22被设置用于限定围绕固定触点的气体储存室9，该气体储存室9与电弧区域连通，用于储存灭弧气体以通过来自电弧的热量而增加压力。 绝缘喷嘴限定了开口，活动触点3通过该开口可移动地延伸并且加压灭弧气体流过该开口。 在电弧区域周围布置有磁体21，用于在气体储存室的开口中产生磁场，用于在电流中断时旋转和延长在电弧区域中产生的电弧。 磁体径向磁化。 喷嘴的新颖设计增强了灭弧能力。