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18 条记录 (耗时 0.019 秒)

    Vacuum circuit breaker
    4.
    发明公开
    Vacuum circuit breaker 失效
    真空断路器

    公开(公告)号：EP0185211A3

    公开(公告)日：1988-08-17

    申请号：EP85114702

    申请日：1985-11-19

    申请人： HITACHI, LTD.

    发明人： Kurosawa, Yukio ,  Iwashita, Kiyoji

    IPC分类号： H01H33/66

    CPC分类号： H01H33/664 ,  H01H33/6642 ,  H01H2033/6648

    摘要： A pair of separable disc shaped electrodes (7, 8) for a vacuum circuit breaker, each including an annular contact part (10) formed around the outer circumferential portion of the electrode (7) on the facing surface to the other electrode (8), an round recessed part (11) formed on the inner portion thereof and surrounded by the annular contact part (10), an elastic support plate (50) placed on the non-facing surface thereof and three straight grooves (12A, 12B, 12C) extending from the outer periphery of the annular contact part (10) to the inner periphery thereof so that arcing on the round recessed part (11) is prevented during circuit breaking operation of the vacuum circuit breaker.

    Vacuum circuit breaker
    5.
    发明公开
    Vacuum circuit breaker 失效
    Vakuumschalter。

    公开(公告)号：EP0175349A2

    公开(公告)日：1986-03-26

    申请号：EP85111755.6

    申请日：1985-09-17

    申请人： HITACHI, LTD.

    发明人： Kurosawa, Yukio ,  Iwashita, Kiyoji ,  Matumoto, Morihisa ,  Watanabe, Ryuji

    IPC分类号： H01H1/02

    CPC分类号： H01H1/0203

    摘要： A vacuum circuit breaker has a vaccum vessel (2) in which are disposed a pair of opposing electrodes (8, 9) so as to be moved into and out of contact with each other, each of the electrodes (8, 9) being made of a material consisting essentially of a main component such as Cu, Ag or the like and a low-melting point metal such as Bi, Pb, Te, Se or the like. A film (13) is formed on the surface of each electrode (8, 9) by, for example, evaporating a metal having a melting point equal to or higher than that of the main component of the electrode material.

    摘要翻译： 真空断路器具有真空容器（2），其中设置有一对相对的电极（8,9）以便彼此移动和移出接触，每个电极（8,9）制成 的基本上由主要成分如Cu，Ag等组成的材料和低熔点金属如Bi，Pb，Te，Se等。 通过例如蒸发熔点等于或高于电极材料的主要成分的金属，在每个电极（8,9）的表面上形成膜（13）。

    Vacuum interrupter
    7.
    发明公开
    Vacuum interrupter 失效
    真空灭弧室

    公开(公告)号：EP0052371A2

    公开(公告)日：1982-05-26

    申请号：EP81109720.3

    申请日：1981-11-16

    申请人： Hitachi, Ltd.

    发明人： Abe, Nobuo ,  Sugawara, Hiroyuki ,  Kurosawa, Yukio ,  Wada, Akira ,  Iwashita, Kiyoji

    IPC分类号： H01H33/66 ,  H01H1/02

    CPC分类号： H01H33/6644 ,  H01H33/6643

    摘要： A vacuum interrupter (1) according to the present invention of parallel magnetic field electrode type comprising a pair of separatable arc electrodes (20) disposed within a vacuum vessel (4) and each provided on its back side with a conductive rod (7 or 8) extending outwardly of said vacuum vessel (4), coil electrodes (15) electrically connected between the associated arc electrode and rod for applying parallel magnetic fields (H, to H 4 ) to arc, and slits (24) formed in the arc electrodes for suppressing eddy currents of the arc electrodes resulting from said parallel fields (H, to H 4 ), wherein a reinforcement member (27) of an electric conductivity higher than a main surface portion (21) of the arc electrode is provided onto the back side of the arc electrode opposite to said main surface portion so that the resulting arc current flows uniformly through said reinforcement (27), whereby a higher interruption efficiency can be obtained for said vacuum interrupter.

    摘要翻译： 一种根据本发明的平行磁场电极类型的真空断续器（1），包括一对可分离的电弧电极（20），该电极设置在真空容器（4）内并且每个电极的背面设置有导电棒（7或8 ）向所述真空容器（4）的外部延伸;线圈电极（15），其电连接在所述相关弧电极和杆之间，用于向所述真空容器（4）施加平行磁场（H 1至H 4）;以及狭缝（24） 抑制由所述平行电场（H 1至H 4）引起的电弧电极的涡电流，其中电导率高于电弧电极的主表面部分（21）的加强部件（27）设置在 与所述主表面部分相对的电弧电极使得所产生的电弧电流均匀地流过所述加强件（27），由此可以为所述真空断续器获得更高的中断效率。

    Electrical power distribution monitoring system and method
    8.
    发明公开
    Electrical power distribution monitoring system and method 失效
    Verfahren und System zumÜberwachender Stromversorgung。

    公开(公告)号：EP0673101A2

    公开(公告)日：1995-09-20

    申请号：EP95301786.0

    申请日：1995-03-17

    申请人： HITACHI, LTD.

    发明人： Kanoi, Minoru ,  Imamura, Yuzuru ,  Yasukawa, Saburou ,  Iwashita, Kiyoji ,  Takei, Toru ,  Kudo, Hiroyuki ,  Kawakami, Junzo ,  Nishijima, Kazuo ,  Inoue, Hiroshi

    IPC分类号： H02J3/14

    CPC分类号： H02J3/04 ,  H02J3/00 ,  H02J13/0006 ,  Y02E60/74 ,  Y04S10/30

    摘要： An electrical power distribution monitoring system is provided for a power distribution line (4) having a plurality of sections with a plurality of electrical loads (6a-e, 7, 25, 26) connected to the power distribution line to form a power distribution network. The monitoring system has at least one sensor (8, 10, 27, 28) for at least one present electrical value at at least one point of the network, and calculating means (14, 16, 17) arranged to estimate electrical values for at least one section of the line in dependence on both of present electrical values measured by the sensor and data relating to past power consumption by loads connected to the line. Improved prediction of actual conditions in the distribution line can be obtained.

    摘要翻译： 提供一种用于配电线路（4）的配电监控系统，该配电线路具有多个部分，所述多个部分具有连接到配电线路的多个电力负载（6a-e，7,25,26），以形成配电网络 。 所述监测系统具有至少一个传感器（8,10,27,28），用于在所述网络的至少一个点处至少一个当前电气值;以及计算装置（14,16,17），被布置成估计在 根据由传感器测量的当前电气值和与连接到该线路的负载相关的过去功率消耗的数据，线路的至少一个部分。 可以获得对配电线路实际情况的预测。

    Vacuum interrupter
    10.
    发明公开
    Vacuum interrupter 失效
    真空中断器

    公开(公告)号：EP0208271A3

    公开(公告)日：1988-11-09

    申请号：EP86109114

    申请日：1986-07-03

    申请人： HITACHI, LTD.

    发明人： Kurosawa, Yukio ,  Iwashita, Kiyoji ,  Matumoto, Morihisa ,  Kurasawa, Takanao ,  Endo, Syunkichi

    IPC分类号： H01H33/66

    CPC分类号： H01H33/6642

    摘要： A cylindrical coil electrode (10) incorporated in a vacuum interrupter comprises a cylindrical body (12) having an opening at one end thereof, two electrical connections (16,17) provided between the end edge surface of the opening of the cylindrical body and a main electrode (11). two arcuate slits (20,21) formed on the cylindrical body (12) between the two electrical connections (16, 17), two arcuate current paths (22, 23) formed in the cylindrical body by the arcuate slits (20, 21) and connected to one end thereof to the electrical connections respectively and to the other end thereof to a rod (71, and two current blocking slits (26; 29) formed between one end and the other end of the cylindrical body (12) at positions where one end (24) of each of the current paths (22) laps the other end (25) of the other current path (23). Because of the above struclure, one-turn current flows throughout the current paths (22, 23) so that a uniform axial magnetic field (H) can be applied to the main electrode (11), and an arc current can be uniformly distributed over the entire surface of the main electrode, thereby improving the current interruption performance of the vacuum interrupter.