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    • 3. 发明授权
    • Surge-absorberless vacuum circuit interrupter
    • 浪涌吸收器真空断路器
    • US4551596A
    • 1985-11-05
    • US478306
    • 1983-03-24
    • Ryuji WatanabeHisashi AndoKeiichi KuniyaYukio Kurosawa
    • Ryuji WatanabeHisashi AndoKeiichi KuniyaYukio Kurosawa
    • H01H33/66H01H1/02H01H1/0233H01H33/664
    • H01H33/664H01H1/0203H01H1/0233
    • A small-sized, light weighted vacuum circuit interrupter is provided. The interrupter comprises a vacuum container confining a vacuum atmosphere of a pressure less than 10.sup.-5 mmHg and a pair of electrodes at least one of which is a movable electrode for making and breaking an electric circuit including either a transformer of a rated surge voltage strength of less than 45 kV or a motor of a rated surge voltage strength of less than 25 kV. At least one of the electrodes has a contact made of a porous body of a refractory conductive material and an impregnate selected from the group consisting of silver telluride, silver selenide and mixtures thereof impregnated in the porous body in an amount sufficient to give the interrupter a chopping current of not more than 1A and an arc extinguishing capability at 1MHz of not more than 27 A/.mu.s when measured in a circuit of 6 kV. The interrupter can be connected to the load without a surge absorber for protecting the breaker from a surge voltage generated at the time of interrupting the circuit.
    • 提供了一个小型轻型真空断路器。 断流器包括限制压力小于10-5mmHg的真空气氛的真空容器和一对电极,其中至少一个是可动电极,用于制造和断开包括额定浪涌电压强度的变压器的电路 小于45kV的电动机或额定浪涌电压强度小于25kV的电动机。 所述电极中的至少一个具有由耐火导电材料的多孔体制成的接触体和浸渍在多孔体中的浸渍剂,所述浸渍物选自碲化镉,硒化银及其混合物,其量足以给断流器a 在6 kV的电路中测量时,斩波电流不大于1A,1MHz时的灭弧能力不大于27 A /μs。 断路器可以连接到负载而没有浪涌吸收器,用于保护断路器免受中断电路时产生的浪涌电压。