公开(公告)号：US07221142B2

公开(公告)日：2007-05-22

申请号：US10480090

申请日：2002-06-07

申请人： Martin Anthony Murray ,  Mark David Crosier ,  Brian Martin Reeder

发明人： Martin Anthony Murray ,  Mark David Crosier ,  Brian Martin Reeder

IPC分类号： G01R15/20 ,  G01R31/02 ,  H02H3/00

CPC分类号： G01R15/146 ,  G01R19/0084 ,  G01R19/0092 ,  G01R19/16547 ,  G01R19/20 ,  G01R19/2513

摘要： A combined toroid/shunt device for detecting residual current in an electrical installation comprising a plurality of conductors such as a live conductor (2) and a neutral conductor (3) is described. The device comprises a toroid means (1, 4) for detecting an AC residual current within a first range and a plurality of resistive shunts (6a) to (6d) for connection in respective ones of the plurality of conductors. A current detection means (5, 7, 13) responsive to current flowing in each of said shunts for detecting a DC residual current and/or an AC residual current within a second range is described. The first range of AC residual current is an AC residual current resulting from earth leakage or cross-leakage between conductors up to a saturation level at which the toroid or electronic means associated means therewith becomes saturated. The second range includes an AC residual current of said saturation level.

摘要翻译： 描述了用于检测包括多个导体（例如带电导体（2）和中性导体（3））的电气设备中的剩余电流的组合环形/分流装置。 该装置包括用于检测第一范围内的AC剩余电流的环形装置（1,4）和用于在多个导体中的相应导体中连接的多个电阻分流器（6a）至（6d）。 描述了响应每个所述分流器中的电流流动的电流检测装置（5,7,13），用于检测在第二范围内的DC剩余电流和/或AC剩余电流。 交流剩余电流的第一范围是由导线之间的地漏或交叉泄漏产生的交流剩余电流，直到相关联的环形或电子装置为饱和的饱和电平。 第二范围包括所述饱和电平的AC剩余电流。

公开(公告)号：US07468871B2

公开(公告)日：2008-12-23

申请号：US10535870

申请日：2003-11-10

申请人： Jonathan Keith Jackson ,  Andrew Williams

发明人： Jonathan Keith Jackson ,  Andrew Williams

IPC分类号： H02H3/00

CPC分类号： H02H3/335 ,  H02H3/334

摘要： A residual current device (RCD) protects a circuit by tripping in response to an imbalance signal representative of residual current imbalance in the circuit. The RCD trips the circuit when the imbalance signal exceeds a predetermined threshold rating. The RCD includes a sense coil for generating the imbalance signal and a test coil for introducing a simulation residual current imbalance into the device so as to increase the imbalance signal. A processor monitors the imbalance signal and determines the simulation residual current imbalance required to increase the imbalance signal to a level that corresponds to the predetermined threshold rating so that the sense coil senses the sum of any residual current imbalance in the circuit being protected and the simulation residual current imbalance in order to test operation of the RCD against the predetermined threshold rating.

摘要翻译： 剩余电流装置（RCD）响应于表示电路中的剩余电流不平衡的不平衡信号而跳闸来保护电路。 当不平衡信号超过预定阈值额定值时，RCD跳闸电路。 RCD包括用于产生不平衡信号的感测线圈和用于将模拟剩余电流不平衡引入器件的测试线圈，以增加不平衡信号。 处理器监视不平衡信号并确定将不平衡信号增加到对应于预定阈值额定值的电平所需的模拟剩余电流不平衡，使得感测线圈感测被保护电路中的任何剩余电流不平衡和模拟 剩余电流不平衡，以便根据预定阈值额定值测试RCD的运行。