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    Dc power supply insulation fault detection circuit
    2.
    发明公开
    Dc power supply insulation fault detection circuit 有权
    Schaltung zur Erkennung vonStörungenbei der Gleichstromversorgungsisolierung

    公开(公告)号：EP2541715A1

    公开(公告)日：2013-01-02

    申请号：EP11171739.3

    申请日：2011-06-28

    申请人： Eneraiser Technology Co., Ltd.

    发明人： Huang, Jui-Kun

    IPC分类号： H02H3/16 ,  H02H3/32 ,  H02H7/26

    CPC分类号： H02H3/16 ,  G01R31/1227 ,  G01R31/40 ,  H02H3/32 ,  H02H7/268

    摘要： There is disclosed a DC power supply insulation fault detection circuit including a plurality of circuit breaking elements (2) located at a positive terminal and a negative terminal of each circuit (11) in a power supply system (1), at least one leakage current detector (3) located in the circuit (11), and at least one positive voltage transient compensator (4) and at least one negative voltage transient compensator (5) respectively bridging the positive terminal and negative terminal of the power supply system (1). The positive and negative voltage transient compensators (4, 5) respectively include a charge/discharge circuit (41, 51) to allow an energy storage circuit (42, 52) to be charged. When grounding insulation deterioration takes place at the positive or negative terminal of the leakage current detector (3), a leakage current loop is formed so that energy storage elements (422, 522) discharge and the leakage current detector (3) detects current variations on the positive and negative terminals, and issue an alarm signal or control cutoff of the circuit breaking elements (2).

    摘要翻译： 公开了一种直流电源绝缘故障检测电路，其包括位于电源系统（1）中的每个电路（11）的正极端子和负极端子处的多个断路元件（2），至少一个泄漏电流 位于电路（11）中的检测器（3）和分别桥接电源系统（1）的正极端子和负极端子的至少一个正电压瞬变补偿器（4）和至少一个负电压瞬态补偿器（5） 。 正负电压瞬态补偿器（4,5）分别包括一个允许能量存储电路（42,52）充电的充电/放电电路（41,41）。 当泄漏电流检测器（3）的正极或负极端子发生接地绝缘劣化时，形成漏电流回路，使得蓄电元件（422,522）放电，泄漏电流检测器（3）检测电流变化 正极和负极端子，并发出断路元件（2）的报警信号或控制截止。