公开(公告)号：US4739274A

公开(公告)日：1988-04-19

申请号：US773333

申请日：1985-09-06

Applicant: Dorr Kimball ,  Michael G. Cox ,  Manuel R. Cabison

Inventor： Dorr Kimball ,  Michael G. Cox ,  Manuel R. Cabison

IPC: G01R31/02 ,  H02H3/17 ,  G01R31/08 ,  G01R33/00

CPC classification number: H02H3/17 ,  G01R31/025

Abstract: Apparatus for the detection of ground leakage in a normally ungrounded DC system includes a DC power supply and conductors from the supply for supplying power to a load connected to the DC system. There is an indicator connected between the DC system and a ground point such that a ground leakage in the system closes a circuit to activate the indicator. With such activation, a pulser periodically interrupts the circuit to effectively generate an interrupted ground fault signal. Such signal is detected by a sensor located relative to the DC system such that an interrupted ground signal detected by the sensor locates the ground fault. Noise introduced into the pulse signal by the periodic interruption of the circuit during the ground fault occurrence is suppressed by the sensor means.

公开(公告)号：US4929901A

公开(公告)日：1990-05-29

申请号：US380728

申请日：1989-07-13

Applicant: Dorr Kimball ,  Michael G. Cox ,  Manuel R. Cabison

Inventor： Dorr Kimball ,  Michael G. Cox ,  Manuel R. Cabison

IPC: G01R31/02 ,  H02H3/17

CPC classification number: G01R31/025 ,  H02H3/17

Abstract: Apparatus for the detection of ground leakage in a normally ungrounded DC system includes a DC power supply and conductors from the supply for supplying power to a load connected to the DC system. There is an indicator connected between the DC system and a ground point such that a ground leakage in the system closes a circuit to activate the indicator. With such activation, a pulser periodically interrupts the circuit to effectively generate an interrupted ground fault signal. Such signal is detected by a sensor located relative to the DC system such that an interrupted ground signal detected by the sensor locates the ground fault. Noise introduced into the pulse signal by the periodic interruption of the circuit during the ground fault occurrence is suppressed by the sensor means.

Abstract translation: 在正常不接地直流系统中用于检测接地漏电的装置包括直流电源和来自电源的导体，用于向连接到直流系统的负载供电。 在DC系统和接地点之间有一个指示器连接，使得系统中的接地泄漏闭合电路以激活指示器。 通过这种激活，脉冲发生器周期性地中断电路以有效地产生中断的接地故障信号。 这种信号由位于相对于直流系统的传感器检测，使得由传感器检测到的中断的接地信号定位接地故障。 通过传感器装置抑制在接地故障发生期间通过电路的周期性中断引入到脉冲信号中的噪声。

公开(公告)号：US5652526A

公开(公告)日：1997-07-29

申请号：US617470

申请日：1996-03-15

Applicant: Kevin C. Sullivan ,  Manuel R. Cabison ,  Isidor Kerszenbaum ,  Juan P. Lopetrone ,  Tom Baker

Inventor： Kevin C. Sullivan ,  Manuel R. Cabison ,  Isidor Kerszenbaum ,  Juan P. Lopetrone ,  Tom Baker

IPC: G01R31/34 ,  G01R27/18

CPC classification number: G01R31/34

Abstract: An analyzer for performing high and low voltage tests on an electric induction machine having electric power input terminals. The analyzer comprises: (a) a high voltage testing circuit for performing high voltage tests on the induction machine; (b) a low voltage testing circuit for performing low voltage tests on the induction machine; (c) electrical terminals for electrical connection with the power input terminals of the induction machine; (d) a plurality of switches electrically connecting the high voltage testing circuit and the low voltage testing circuit to the terminals, each switch having one or more control input terminals for receiving control signals for closing and opening the switch; and (e) a controller having a first set of output terminals electrically connected to the control input terminals of the switches, the controller providing control signals to the switches to selectively open one or more of the switches and to selectively close one or more of the switches to: (i) provide electrical conduction paths between the high voltage testing circuit and the induction machine through the closed switches, while electrically isolating the low voltage testing circuit from the high voltage testing circuit through the open switches; and (ii) provide electrical conduction paths between the low voltage testing circuit and the conduction machine through the closed switches, while electrically isolating the high voltage testing circuit from the low voltage testing circuit through the open switches.

Abstract translation: 一种用于在具有电力输入端子的电动感应电机上执行高低压测试的分析器。 分析仪包括：（a）用于对感应电机进行高压测试的高压测试电路; （b）用于对感应电机进行低电压测试的低电压测试电路; （c）用于与感应电机的电源输入端子电连接的电气端子; （d）将高压检测电路和低电压检测电路电连接到端子的多个开关，每个开关具有一个或多个控制输入端子，用于接收关闭和断开开关的控制信号; 和（e）控制器，其具有电连接到开关的控制输入端子的第一组输出端子，所述控制器向开关提供控制信号以选择性地打开一个或多个开关并且选择性地闭合所述开关中的一个或多个 切换到：（i）通过闭合开关在高压测试电路和感应电机之间提供导电路径，同时通过开路开关将低压测试电路与高压测试电路隔离; 并且（ii）通过闭合的开关在低压测试电路和导电机器之间提供导电路径，同时通过开路开关将高压测试电路与低压测试电路隔离。

公开(公告)号：US4739275A

公开(公告)日：1988-04-19

申请号：US899927

申请日：1986-08-25

Applicant: Dorr Kimball ,  Michael G. Cox ,  Manuel R. Cabison

Inventor： Dorr Kimball ,  Michael G. Cox ,  Manuel R. Cabison

IPC: G01R31/02 ,  H02H3/17 ,  G01R31/08

CPC classification number: H02H3/17 ,  G01R31/025

Abstract: Apparatus for the detection of ground leakage in a normally ungrounded DC system includes a DC power supply and conductors from the supply for supplying power to a load connected to the DC system. There is an indicator connected between the DC system and a ground point such that a ground leakage in the system closes a circuit to activate the indicator. With such activation, a pulser periodically interrupts the circuit to effectively generate an interrupted ground fault signal. Such signal is detected by a sensor located relative to the DC system such that an interrupted ground signal detected by the sensor locates the ground fault. Noise introduced into the pulse signal by the periodic interruption of the circuit during the ground fault occurrence is suppressed by the sensor.

Abstract translation: 在正常不接地直流系统中用于检测接地漏电的装置包括直流电源和来自电源的导体，用于向连接到直流系统的负载供电。 在DC系统和接地点之间有一个指示器连接，使得系统中的接地泄漏闭合电路以激活指示器。 通过这种激活，脉冲发生器周期性地中断电路以有效地产生中断的接地故障信号。 这种信号由位于相对于直流系统的传感器检测，使得由传感器检测到的中断的接地信号定位接地故障。 通过传感器抑制在接地故障发生期间由电路的周期性中断引入到脉冲信号中的噪声。