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    ON-LOAD TAP CHANGING DEVICE
    2.
    发明公开
    ON-LOAD TAP CHANGING DEVICE 审中-公开

    公开(公告)号：EP3171373A4

    公开(公告)日：2018-04-11

    申请号：EP15821798

    申请日：2015-06-30

    申请人： TOSHIBA KK

    发明人： EGUCHI NAOKI ,  ISHIKAWA TAKU ,  MIYAMOTO YASUSHI

    IPC分类号： H01F29/04 ,  H01H9/00 ,  H01H9/08

    CPC分类号： H01F29/04 ,  H01H9/0016 ,  H01H9/0027 ,  H01H9/0038 ,  H01H9/0044 ,  H01H9/08

    摘要： An on-load tap changer which ensures the compatibility of an oil tank when an interchange from the in-oil arc switching scheme to the vacuum-valve scheme is made, improves a retrofit function, achieves a space saving by simplifying components, and facilitates a construction of an actuation mechanism is provided. A change-over switch 46 for the vacuum-valve scheme is placed in an oil tank 50 filled with an insulation oil 56. The change-over switch 46 is provided with a main contact contained in vacuum valves 2, 3, 5, 6, and current-carrying conductors 7, 8 to reduce a current flowing in the main contact, and parallel link mechanisms actuating the current-carrying conductors 7, 8 in a parallel manner. A stationary contact 47 capable of contacting with and separating from the current-carrying conductors 7, 8 is attached to the internal wall surface of the oil tank 50. The change-over switch 46 is freely attachable to and detachable from the oil tank 50 with the stationary contact 47 being attached to the oil tank 50.