Electric switching unit comprising a gas-tight casing for protection of
contacts
    1.
    发明授权
    Electric switching unit comprising a gas-tight casing for protection of contacts 失效
    电气开关单元包括用于保护触点的气密外壳

    公开(公告)号:US4638275A

    公开(公告)日:1987-01-20

    申请号:US714928

    申请日:1985-03-22

    CPC classification number: H01H9/04 H01H1/66 H01H50/22 H01H2050/025

    Abstract: An electric switching unit for preventing oxidation of copper-base contacts in contactors comprises a body (2), comprises an electromagnet (11) having a stationary yoke (7) and a moving armature (15) in cooperating relation with a plurality of switches (36). A protective casing (42) is fixed on the body so as to contain the switches. The contact-studs (30, 31, 32, 33) of the switches (36) essentially have a base of cuprous materials while a non-oxidizing atmosphere is confined and maintained beneath the protective casing (42) by seals (55, 23, 47). The seals are placed on the one hand between the moving armature (15) and a first face (21) of the body (2) and on the other hand between the casing (42) and a second face (41) of the body which is opposite to the first face.

    Abstract translation: 一种用于防止接触器中铜基触点氧化的电气开关装置,包括:主体(2),包括具有静止磁轭(7)的电磁体(11)和与多个开关配合的运动电枢(15) 36)。 保护壳体(42)固定在主体上以容纳开关。 开关(36)的接触螺柱(30,31,32,33)基本上具有一种铜质材料的基部,同时通过密封件(55,23,33)将非氧化性气氛限制并保持在保护壳体(42)下方, 47)。 密封件一方面放置在移动的衔铁(15)和主体(2)的第一面(21)之间,另一方面在壳体(42)和主体的第二面(41)之间放置, 与第一张脸相反。

    Device for measuring the current which flows in a conductor
    2.
    发明授权
    Device for measuring the current which flows in a conductor 失效
    用于测量在导体中流动的电流的装置

    公开(公告)号:US4473810A

    公开(公告)日:1984-09-25

    申请号:US449903

    申请日:1982-12-15

    CPC classification number: G01R15/18 G01R19/15

    Abstract: An a-c current sensor for measuring the current which flows in a conductor has an insulating frame having a central compartment open at its upper end and encompassed by a U-shaped receptacle for a bent portion of the conductor. A coil is housed in the central compartment. The frame is slidingly mounted within a sleeve made of a soft magnetic material and having two assembled half-shells. The voltage generated by the current across the coil is proportional to the intensity of current flow.

    Abstract translation: 用于测量在导体中流动的电流的a-c电流传感器具有绝缘框架,其绝缘框架具有在其上端开口的中央隔室,并且由用于导体的弯曲部分的U形插座所包围。 线圈被容纳在中央隔室中。 框架滑动地安装在由软磁材料制成的套筒中并且具有两个组装的半壳体。 由线圈上的电流产生的电压与电流的强度成正比。

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