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    • 3. 发明授权
    • Contact electrode material for vacuum interrupter and method of
manufacturing the same
    • 真空灭弧室接触极材料及其制造方法
    • US4686338A
    • 1987-08-11
    • US698865
    • 1985-02-06
    • Yoshiyuki KashiwagiYasushi NodaKaoru Kitakizaki
    • Yoshiyuki KashiwagiYasushi NodaKaoru Kitakizaki
    • C22C32/00H01H1/02B22F3/26C22C29/06H01H33/66
    • H01H1/0206C22C32/0052
    • A novel contact electrode material for vacuum interrupters is disclosed, by which the chopping current value inherent in contact material can be reduced so that it is possible to stably interrupt small lagging current due to inductive loads without generating surge voltages. The material is equivalent or superior to the conventional Cu-0.5Bi material in large current interrupting capability and dielectric strength. The material consists essentially of copper, chromium, iron or molybdenum and chromium carbide or molybdenum carbide. The metallographical microstructure is such that copper is infiltrated into a porous matrix formed by mutually bonding chromium powder, iron or molybdenum powder and metal carbide powder in diffusion state. In its manufacturing process, firstly copper is placed onto a powder mixture of chromium, iron or molybdenum, and chromium carbide or molybdenum carbide, and then the copper and the powder mixture is heated within a nonoxidizing atmosphere at a first temperature lower than the copper melting point and thereafter again at a second temperature higher than the copper melting point.
    • 公开了一种用于真空断路器的新型接触电极材料,通过该接触电极材料可以减小接触材料固有的斩波电流值,从而可以稳定地中断由于感性负载而导致的滞后电流,而不产生浪涌电压。 该材料相当于或优于传统的Cu-0.5Bi材料,具有大的电流中断能力和介电强度。 该材料基本上由铜,铬,铁或钼和碳化铬或碳化钼组成。 金相显微结构是铜渗透到通过相互键合铬粉末,铁或钼粉末和扩散状态的金属碳化物粉末形成的多孔基体中。 在其制造过程中,首先将铜放置在铬,铁或钼的粉末混合物和碳化铬或碳化钼上,然后铜和粉末混合物在非氧化气氛中在低于铜熔融的第一温度下加热 然后再次高于铜熔点的第二温度。
    • 4. 发明授权
    • Vacuum interrupter
    • 真空灭弧室
    • US4584445A
    • 1986-04-22
    • US589295
    • 1984-03-14
    • Yoshiyuki KashiwagiYasushi NodaKaoru Kitakizaki
    • Yoshiyuki KashiwagiYasushi NodaKaoru Kitakizaki
    • H01H1/02H01H11/04H01H33/664H01H33/66
    • H01H33/6644H01H1/0203H01H11/04Y10T29/49206
    • A vacuum interrupter of more improved large current interrupting capability and dielectric strength is disclosed. The interrupter has a pair of separable contact-electrodes (13, 24), a vacuum envelope (4) generally electrically insulating and enclosing the pair therewithin, a contact-making portion (19) of 20 to 60% IACS electrical conductivity being a part of one contact-electrode (13) of the pair and being into and out of engagement with the other contact-electrode (24) of the pair, an arc-diffusing portion (20) of 2 to 30% IACS electrical conductivity being the other part of the one contact-electrode (13) and being electrically and mechanically connected to the contact-making portion (19) so as to be spaced from the other contact-electrode (24) when the contact-electrodes (13, 24) are into engagement, and means (14, 15) for applying an axial magnetic field in parallel to an arc established between the contact-electrodes (13, 24) when separated.
    • 公开了一种具有更大改善的大电流中断能力和介电强度的真空断路器。 断路器具有一对可分离的接触电极(13,24),一个通常电绝缘并在其内包围的真空外壳(4),具有20至60%IACS导电性的接触部分(19)是部分 的一对接触电极(13),与该对的另一个接触电极(24)进入和离开接合,2〜30%的IACS电导率的电弧扩散部分(20)是另一个 所述一个接触电极(13)的一部分并且当所述接触电极(13,24)是接触电极(13,24)时,与所述接触部分(19)电连接并机械连接以与所述另一个接触电极(24)间隔开 以及用于当分离时施加平行于在接触电极(13,24)之间建立的电弧的轴向磁场的装置(14,15)。
    • 7. 发明授权
    • Vacuum interrupter
    • 真空灭弧室
    • US4588879A
    • 1986-05-13
    • US554122
    • 1983-11-21
    • Yasushi NodaYoshiyuki Kashiwagi
    • Yasushi NodaYoshiyuki Kashiwagi
    • H01H33/664H01H33/66
    • H01H33/6644
    • A vacuum interrupter enhances current interruption capability for large current at high voltage. The interrupter includes a coil-electrode creating an axial magnetic field parallel to the direction of arc current passing across an interelectrode gap. The coil-electrode includes a radially extending web spaced from a contact-electrode of the interrupter, one end of the web electrically connected to a contact-electrode lead rod, a partially turning segment having one end connected through an electrical connector to the other end of the web, another web and a segment made of a material with electrical conductivity higher than the contact-electrode and attached to the back-surface of the contact-electrode. The other web electrically connects the other end of the segment to a contact-making portion of the contact-electrode, the one and other webs alternating at angular intervals. Current passes through the one and other webs in opposite directions. Current paths are shortened in the contact-electrode. The coil-electrode intensifies the axial magnetic field due to the arrangements of the webs.
    • 真空断路器提高了高电压下大电流的电流中断能力。 断路器包括线圈电极,其产生平行于穿过电极间间隙的电弧电流方向的轴向磁场。 线圈电极包括与断路器的接触电极隔开的径向延伸的腹板,腹板的一端电连接到接触电极引线杆,部分转动部分的一端通过电连接器连接到另一端 的纤维网,另一个纤维网和由导电率高于接触电极并附着到接触电极的背面的材料制成的片段。 另一个网将该段的另一端电连接到接触电极的接触部分,一个和另一个腹板以角度间隔交替。 电流以相反的方向通过一个和另一个网。 接触电极中的电流通路被缩短。 由于腹板的布置,线圈电极增强了轴向磁场。