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    • 4. 发明公开
    • MAGNETIZING INRUSH CURRENT SUPPRESSION DEVICE
    • VORRICHTUNG ZURUNTERDRÜCKUNGDER MAGNESISISIUNG EINES EINGEHENDEN STROMS
    • EP2608239A1
    • 2013-06-26
    • EP11818166.8
    • 2011-08-12
    • Kabushiki Kaisha Toshiba
    • KAWASAKI, KeiKOSHIZUKA, TadashiMARUYAMA, ShiroSAITOH, MinoruNAGAYAMA, Noriyuki
    • H01H33/59H01H9/54H01H9/56H02H9/02
    • H02H9/002H01F27/42H01H9/563
    • There is provided a magnetizing inrush current suppression apparatus (6) that suppresses a magnetizing inrush current of a three-phase collective operation type circuit breaker (2) to open and close a connection between a power source bus (1) and a modified Woodbridge connection transformer (3), and the apparatus measures a three-phase alternating-current voltage of the power source bus (1), calculates steady magnetic fluxes of the modified Woodbridge connection transformer (3), measures a three-phase alternating-current voltage on the side of the modified Woodbridge connection transformer (3), calculates residual magnetic fluxes after disconnecting of the modified Woodbridge connection transformer (3), and closes the circuit breaker (2) when polarities of the steady magnetic fluxes match polarities of the residual magnetic fluxes in all lines.
    • 提供了一种抑制三相集合式断路器(2)的励磁涌流的电磁涌入抑制装置(6),用于打开和关闭电源总线(1)与修改后的Woodbridge连接 变压器(3),该装置测量电源总线(1)的三相交流电压,计算修改后的Woodbridge连接变压器(3)的稳定磁通量,测量三相交流电压 修改后的Woodbridge连接变压器(3)的侧面,在修改后的Woodbridge连接变压器(3)断开后计算残余磁通量,并且当稳定磁通量的极性与剩余磁通量的极性相符时闭合断路器(2) 在所有行。