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12 条记录 (耗时 0.01 秒)

    Metal oxide voltage-variable resistor composition
    2.
    发明授权
    Metal oxide voltage-variable resistor composition 失效
    金属氧化物电压可变电阻器组成

    公开(公告)号：US3928245A

    公开(公告)日：1975-12-23

    申请号：US37721873

    申请日：1973-07-09

    申请人： GEN ELECTRIC

    发明人： FISHMAN HERBERT ,  KRESGE JAMES S

    IPC分类号： H01C7/10 ,  C04B35/453 ,  H01C7/112 ,  H01B1/08

    CPC分类号： H01C7/112

    摘要： A metal oxide resistor of the type consisting essentially of zinc oxide and containing significant amounts of the impurities bismuth trioxide, cobalt trioxide, manganese dioxide, antimony oxide, chromic oxide, and silicon dioxide contains also significant amounts of the impurities barium oxide and boron oxide.

    摘要翻译： 主要由氧化锌和含有大量杂质三氧化锑，三氧化锑，二氧化锰，氧化锑，氧化铬和二氧化硅组成的金属氧化物电阻体也含有显着量的杂质氧化钡和氧化硼。

    Overvoltage surge arrester with improved voltage grading circuit
    8.
    发明授权
    Overvoltage surge arrester with improved voltage grading circuit 失效
    具有改进电压分级电路的过压浪涌电抗器

    公开(公告)号：US3859569A

    公开(公告)日：1975-01-07

    申请号：US43365674

    申请日：1974-01-16

    申请人： GEN ELECTRIC

    发明人： KRESGE JAMES S

    IPC分类号： H01T4/16 ,  H01T4/20 ,  H02H9/06

    CPC分类号： H01T4/20 ,  H01C7/12

    摘要： An overvoltage surge arrester for relatively high voltage applications is provided with a voltage grading circuit comprising a relatively low exponent resistor in parallel with a relatively high exponent resistor, for preventing spurious operation of the arrester under conditions in which the outside surface of the porcelain housing becomes contaminated with a conductive film. A linear resistor is additionally connected in series with the high exponent non-linear resistor of the above circuit to prevent excessively high current in the high exponent resistor near the sparkover voltage of the arrester.

    摘要翻译： 具有相对高电压应用的过电压避雷器具有电压分级电路，该电压分级电路包括与较高指数电阻并联的相对较低的指数电阻器，用于防止在陶瓷外壳的外表面成为的条件下避雷器的虚假操作 被导电膜污染。 线性电阻器还与上述电路的高指数非线性电阻串联连接，以防止在避雷器的火花放电电压附近的高指数电阻中的过大的电流。

    Discharge arc control means for a lightning arrester
    10.
    发明授权
    Discharge arc control means for a lightning arrester 失效
    放电雷达控制装置

    公开(公告)号：US3566201A

    公开(公告)日：1971-02-23

    申请号：US3566201D

    申请日：1969-03-03

    申请人： GEN ELECTRIC

    发明人： SAKSHAUG EUGENE C ,  KRESGE JAMES S

    IPC分类号： H01T1/02 ,  H02H9/06

    CPC分类号： H01T1/02

    摘要： A surge voltage arrester having means for retarding the build up of appreciable current limiting voltage therein for a predetermined interval of time after sparkover of the arrester comprising, a current limiting spark gap assembly having an electromagnetic coil electrically connected in series with it and disposed adjacent to it for moving arcs within the assembly in a manner such that arc voltage is increased. The coil is shunted by a current limiting means and is provided with enough turns to give it a substantial inductance so that an overvoltage surge may be discharged through the assembly for a predetermined interval of time before the coil develops enough magnetic flux to move arcs within the assembly sufficiently to build up an appreciable current limiting arc voltage. Additionally, the highly inductive coil provides the arrester with a high inductive reactance such that at the moment of clearing the current is forced slowly to zero providing a ''''gentle'''' clearing so high induced voltages are not produced in inductive protected circuits.