公开(公告)号：US4896115A

公开(公告)日：1990-01-23

申请号：US201014

申请日：1988-06-01

申请人： Philippe LeMaitre ,  Philippe Schuster ,  Christian Pellegrin

发明人： Philippe LeMaitre ,  Philippe Schuster ,  Christian Pellegrin

IPC分类号： G01R27/18

CPC分类号： G01R27/18

摘要： An insulation monitoring device comprises an input circuit of a reference AC signal, and an electronic detection circuit for discriminating the components of a measurement signal proportional to the ground fault impedance Z formed by a leakage resistor Rf in parallel with a leakage capacitor C. A synchronous detector has a pair of static inverters processing the first component, which is a function of the current IR flowing through the leakage resistor Rf, and of the second component which is a function of the current IC flowing through the capacitor C. A converter cooperates with the generator to deliver two quadrature signals C1 and C2 to respectively control the inverters. A display means accurately displays the value of the leakage resistance Rf.

摘要翻译： 绝缘监测装置包括参考AC信号的输入电路和电子检测电路，用于识别与由泄漏电容器C并联形成的漏电阻器Rf形成的接地故障阻抗Z成比例的测量信号的分量。同步 检测器具有处理第一分量的一对静态逆变器，该第一分量是流过漏电阻器Rf的电流IR的函数，以及作为流经电容器C的电流IC的函数的第二分量的函数。转换器与 发电机提供两个正交信号C1和C2来分别控制逆变器。 显示装置准确地显示泄漏电阻Rf的值。

公开(公告)号：US5075628A

公开(公告)日：1991-12-24

申请号：US503920

申请日：1990-04-04

申请人： Philippe Schuster ,  Roland Moussanet

发明人： Philippe Schuster ,  Roland Moussanet

IPC分类号： G01R31/02 ,  H02H3/17

CPC分类号： G01R31/025 ,  H02H3/17

摘要： Insulation monitoring of a direct current power supply system is achieved by application of an alternating current and the detector is constituted by a current transformer and a Hall-effect current sensor. This Hall-effect sensor controls a direct current generator, which supplies a compensation winding of the current transformer, so as to prevent saturation of the toroid of this current transformer. When a ground fault occurs, the alternating current generator generates a fault current detected by the transformer.

摘要翻译： 直流电源系统的绝缘监测是通过交流电流实现的，检测器由电流互感器和霍尔效应电流传感器构成。 该霍尔效应传感器控制直流发电机，其提供电流互感器的补偿绕组，以防止该电流互感器的环形线圈的饱和。 当发生接地故障时，交流发电机产生变压器检测到的故障电流。

公开(公告)号：US5083081A

公开(公告)日：1992-01-21

申请号：US658771

申请日：1991-02-21

申请人： Michel Barrault ,  Philippe Schuster ,  Roland Moussanet ,  Raymond Bresson

发明人： Michel Barrault ,  Philippe Schuster ,  Roland Moussanet ,  Raymond Bresson

IPC分类号： G01R15/14 ,  G01R1/20 ,  H01H71/12 ,  H02H1/00

CPC分类号： H01H71/125 ,  G01R1/203 ,  H02H1/0007

摘要： A measuring sensor of an electronic trip device of a circuit breaker comprises a shunt in the form of a hollow cylinder inside which there is located an electronic processing unit, comprising an amplifier circuit and an input resistance in good thermal contact with the internal face of the cylinder.

摘要翻译： 断路器的电子跳闸装置的测量传感器包括中空圆筒形式的分流器，其内部设有电子处理单元，该电子处理单元包括放大器电路和与内部表面良好热接触的输入电阻 圆筒。