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61 条记录 (耗时 0.014 秒)

    Gas blast circuit breaker
    31.
    发明公开
    Gas blast circuit breaker 失效
    气体电路断路器

    公开(公告)号：EP0469330A3

    公开(公告)日：1992-04-15

    申请号：EP91111165.6

    申请日：1991-07-04

    申请人： HITACHI, LTD.

    发明人： Tsukushi, Masanori ,  Hashimoto, Akira ,  Satoh, Minori ,  Kurosawa, Yukio ,  Hirasawa, Kunio ,  Endo, Fumihiro ,  Yamagiwa, Tokio

    IPC分类号： H01H33/70

    CPC分类号： H01H33/703 ,  H01H33/7076

    摘要： A gas blast circuit breaker comprises an insulation nozzle (8) for blowing extinguishing gas to an arc (9) generated between a stationary contact (1) and a movable contact (2). The nozzle (8) has a throat section (10) into and out of which one of the two contacts (1, 2) is movable and a divergent section (13) provided downstream of the throat section (10). A slanting surface (11) for increasing a reflectivity of energy intensity of the arc (9) is formed on the divergent section (13) of the nozzle (8). The nozzle (8) is formed of a fluoroplastic material and boron nitride powder not more than 15 vol.% added as a filler.

    Puffer type gas-insulated circuit breaker
    32.
    发明公开
    Puffer type gas-insulated circuit breaker 失效
    Gasisolierter Schalter mit Selbstbeblasung。

    公开(公告)号：EP0468294A2

    公开(公告)日：1992-01-29

    申请号：EP91111575.6

    申请日：1991-07-11

    申请人： HITACHI, LTD.

    发明人： Yamagiwa, Tokio ,  Tsubaki, Toru ,  Sasaki, Koji ,  Yamamoto, Naoyuki ,  Kurokawa, Koji ,  Amano, Naoki

    IPC分类号： H01H33/70

    CPC分类号： H01H33/7069

    摘要： A puffer type gas-insulated circuit breaker is adapted to, when its movable electrode (3) separates from a stationary electrode (4), let an insulating gas (10) blow to an occurring arc (A) to extinguish the same. As insulated nozzle (1) is provided to direct the gas (10) toward the arc (A) and forms a gas passage (16) in cooperation with an insulating cover (2) which covers the movable electrode (3). The insulated cover (2) is formed of an insulating material which contains a filler for preventing energy lines of the arc (A) from entering the cover (2). Furthermore, the insulated cover (2) has a specific inductive capacity larger than that of the insulated nozzle (1) so as to make small the electric field strength at the front end of the movable electrode (3).

    摘要翻译： 吹气式气体绝缘断路器，当其可动电极（3）与固定电极（4）分离时，使绝缘气体（10）吹向发生的电弧（A）以将其熄灭。 由于绝缘喷嘴（1）被设置成将气体（10）引向电弧（A）并且与覆盖可动电极（3）的绝缘盖（2）配合形成气体通道（16）。 绝缘盖（2）由绝缘材料形成，其包含用于防止电弧（A）的能量线进入盖（2）的填料。 此外，绝缘盖（2）具有比绝缘喷嘴（1）更大的比感应能力，从而使可动电极（3）前端的电场强度变小。

    Insulation testing device for gas insulated apparatus
    34.
    发明公开
    Insulation testing device for gas insulated apparatus 失效
    用于气体绝缘装置的绝缘测试装置

    公开(公告)号：EP0252416A3

    公开(公告)日：1989-11-15

    申请号：EP87109411.6

    申请日：1987-06-30

    申请人： HITACHI, LTD.

    发明人： Yamagiwa, Tokio ,  Ishikawa, Toshio

    IPC分类号： G01R31/12 ,  H02B13/065

    CPC分类号： G01R31/1254

    摘要： In an insulation testing device for testing insulation characteristics of a gas insulated apparatus (l6), at least one pair of positive and negative polarity impulse voltages each having a duration shorter than a half period of a commercial frequency voltage are applied to the gas insulated apparatus (l6) by a test voltage generator (l0).

    Bushing
    35.
    发明公开
    Bushing 审中-公开
    衬套

    公开(公告)号：EP0935259A3

    公开(公告)日：2000-10-18

    申请号：EP99102171.8

    申请日：1999-02-03

    申请人： Hitachi, Ltd.

    发明人： Shindo, Katsuji ,  Rokunohe, Toshiaki ,  Endo, Fumihiro ,  Yamagiwa, Tokio

    IPC分类号： H01B17/26

    CPC分类号： H01B17/26

    摘要： A bushing is capable of preventing corona discharge due to electric field concentration. The bushing has a central conductor (102), and a plurality of shield rings (107). Gaps are formed between the shield rings (107) such that equipotential lines extend through the gaps. Electric field concentration in a tangential distribution on a part of the surface of the bushing corresponding to an upper part of the internal shield is relieved to prevent corona discharge under wet condition, and antipollution performance and withstand voltage characteristic can be improved.

    Bushing
    36.
    发明公开
    Bushing 审中-公开
    Durchführungsisolator

    公开(公告)号：EP0935259A2

    公开(公告)日：1999-08-11

    申请号：EP99102171.8

    申请日：1999-02-03

    申请人： Hitachi, Ltd.

    发明人： Shindo, Katsuji ,  Rokunohe, Toshiaki ,  Endo, Fumihiro ,  Yamagiwa, Tokio

    IPC分类号： H01B17/26

    CPC分类号： H01B17/26

    摘要： A bushing is capable of preventing corona discharge due to electric field concentration. The bushing has a central conductor (102), and a plurality of shield rings (107). Gaps are formed between the shield rings (107) such that equipotential lines extend through the gaps. Electric field concentration in a tangential distribution on a part of the surface of the bushing corresponding to an upper part of the internal shield is relieved to prevent corona discharge under wet condition, and antipollution performance and withstand voltage characteristic can be improved.

    摘要翻译： 衬套能够防止由于电场集中而引起的电晕放电。 衬套具有中心导体（102）和多个屏蔽环（107）。 在屏蔽环（107）之间形成间隙，使得等电位线延伸通过间隙。 减轻与衬套上部相对应的衬套表面部分的切向分布中的电场浓度，以防止潮湿条件下的电晕放电，可以提高抗污染性能和耐电压特性。