公开(公告)号：US20120314327A1

公开(公告)日：2012-12-13

申请号：US13154812

申请日：2011-06-07

申请人： Yow-Chyi LIU ,  Jui-Kun Huang

发明人： Yow-Chyi LIU ,  Jui-Kun Huang

IPC分类号： H02H9/04

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

摘要： A DC power supply insulation fault detection circuit includes a plurality of circuit breaking elements located at a positive terminal and a negative terminal of each circuit in a power supply system, at least one leakage current detector located in the circuit, and at least one positive voltage transient compensator and at least one negative voltage transient compensator respectively bridging the positive terminal and negative terminal of the power supply system. The positive and negative voltage transient compensators respectively include a charge/discharge circuit to allow an energy storage circuit to be charged. When grounding insulation deterioration takes place at the positive or negative terminal of the leakage current detector, a leakage current loop is formed so that energy storage elements discharge and the leakage current detector detects current variations on the positive and negative terminals, and issue an alarm signal or control cutoff of the circuit breaking elements.

摘要翻译： 直流电源绝缘故障检测电路包括位于电源系统中的每个电路的正极端子和负极端子处的多个断路元件，位于电路中的至少一个漏电流检测器，以及至少一个正电压 瞬态补偿器和至少一个负电压瞬变补偿器，分别桥接电源系统的正极和负极端子。 正负电压瞬变补偿器分别包括一个充电/放电电路，以允许一个能量存储电路被充电。 当泄漏电流检测器的正极或负极端子发生接地绝缘劣化时，形成漏电流回路，使得储能元件放电，漏电流检测器检测正极和负极端子的电流变化，并发出报警信号 或控制断路元件的截止。

公开(公告)号：US08559142B2

公开(公告)日：2013-10-15

申请号：US13154812

申请日：2011-06-07

申请人： Yow-Chyi Liu ,  Jui-Kun Huang

发明人： Yow-Chyi Liu ,  Jui-Kun Huang

IPC分类号： H02H9/08 ,  H02H9/00 ,  G01R31/14 ,  G01R27/08

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

摘要： A DC power supply insulation fault detection circuit includes a plurality of circuit breaking elements located at a positive terminal and a negative terminal of each circuit in a power supply system, at least one leakage current detector located in the circuit, and at least one positive voltage transient compensator and at least one negative voltage transient compensator respectively bridging the positive terminal and negative terminal of the power supply system. The positive and negative voltage transient compensators respectively include a charge/discharge circuit to allow an energy storage circuit to be charged. When grounding insulation deterioration takes place at the positive or negative terminal of the leakage current detector, a leakage current loop is formed so that energy storage elements discharge and the leakage current detector detects current variations on the positive and negative terminals, and issue an alarm signal or control cutoff of the circuit breaking elements.

摘要翻译： 直流电源绝缘故障检测电路包括位于电源系统中的每个电路的正极端子和负极端子处的多个断路元件，位于电路中的至少一个漏电流检测器，以及至少一个正电压 瞬态补偿器和至少一个负电压瞬变补偿器，分别桥接电源系统的正极和负极端子。 正负电压瞬变补偿器分别包括一个充电/放电电路，以允许一个能量存储电路被充电。 当泄漏电流检测器的正极或负极端子发生接地绝缘劣化时，形成漏电流回路，使得储能元件放电，漏电流检测器检测正极和负极端子的电流变化，并发出报警信号 或控制断路元件的截止。