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公开(公告)号：US06304089B1
公开(公告)日：2001-10-16
申请号：US09178417
申请日：1998-10-26
IPC分类号： G01R3102
CPC分类号： G01R31/026 , G01R31/021
摘要： A combination of two trailing cable termination devices is provided for connection in parallel between the ground-check and ground conductors of the two arms of a Y-configured trailing cable supplying power to two loads, the combined output electrical characteristic of the parallel termination devices satisfying the requirements of a ground-check monitor located at the source of the power and the individual output electrical characteristics of the devices each failing to satisfy those requirements.
摘要翻译： 提供了两个牵引电缆端接装置的组合，用于并联连接在两个负载上的Y配置拖尾电缆的两个臂的接地导体和接地导体之间，并联端接装置的组合输出电特性满足 位于电源的接地检查监控器和设备的各个输出电气特性的要求都不符合这些要求。
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公开(公告)号：US20120299573A1
公开(公告)日：2012-11-29
申请号：US13474814
申请日：2012-05-18
IPC分类号： H01F38/28
CPC分类号： H01F38/28 , H01F38/32 , H01F2038/305
摘要： A single-coil, toroid-type current transformer circuit for detecting both AC and DC current. The current transformer circuit may include a current transformer and an oscillator electrically connected to the current transformer. The current transformer circuit may further include an open and short CT detection circuit electrically connected to the oscillator for facilitating determination of the connection and stability state of the current transformer. A processor may be electrically connected to an output of the open and short CT detection circuit for performing a series of operations on signal data generated by the open and short CT detection circuit and manipulating the operation of an electrical power system accordingly.
摘要翻译： 用于检测交流和直流电流的单线圈，环形电流互感器电路。 电流互感器电路可以包括电流互感器和电连接到电流互感器的振荡器。 电流互感器电路还可以包括电连接到振荡器的开路和短路CT检测电路，以便于确定电流互感器的连接和稳定状态。 处理器可以电连接到开路和短路CT检测电路的输出，以对由开放和短路CT检测电路产生的信号数据执行一系列操作，并相应地操纵电力系统的操作。
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公开(公告)号：US09218905B2
公开(公告)日：2015-12-22
申请号：US14470110
申请日：2014-08-27
申请人： Michael P. Vangool
CPC分类号： H01F38/28 , H01F38/32 , H01F2038/305
摘要： A method for processing output from a current transformer comprising deriving signal data from the output; converting the signal data from analog to digital format; removing a carrier signal from the signal data; squaring the signal data; and performing a recursive RMS algorithm on the signal data.
摘要翻译： 一种用于处理来自电流互感器的输出的方法，包括从所述输出导出信号数据; 将信号数据从模拟转换成数字格式; 从所述信号数据中去除载波信号; 平均信号数据; 并对信号数据执行递归RMS算法。
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公开(公告)号：US20150048840A1
公开(公告)日：2015-02-19
申请号：US14386108
申请日：2013-04-11
IPC分类号： G01R31/02
CPC分类号： G01R31/025 , H02H3/16 , H02H5/105
摘要： A device for monitoring a neutral grounding resistor (NGR), including first and second NGRs electrically connected in parallel, a rectifier circuit electrically connected in series with the second NGR and a voltage source and a logic resistor electrically connected in series with the second NGR. A logic circuit measures current passing through the logic resistor and determines the resistance of the first NGR based on the measured current and the resistance of the second NGR. As such, a failed-open or failed-short condition of the first NGR may be identified based at least in part on the determined resistance of the first NGR.
摘要翻译： 一种用于监测中性点接地电阻器（NGR）的装置，包括并联电连接的第一和第二NGR，与第二NGR串联电连接的整流器电路和与第二NGR串联电连接的电压源和逻辑电阻器。 逻辑电路测量通过逻辑电阻器的电流，并且基于测量的电流和第二NGR的电阻确定第一NGR的电阻。 因此，可以至少部分地基于所确定的第一NGR的阻力来识别第一NGR的故障打开或失败的短条件。
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公开(公告)号：US09225159B2
公开(公告)日：2015-12-29
申请号：US14133839
申请日：2013-12-19
摘要： A three-phase GFCI device is disclosed. The three-phase GFCI device may include contactors, a contactor control module configured to cause the contactors to close during normal operation of the GFCI device and open based on receiving a fault signal, a current detection module, a transient suppression module, a miswire detection module, a ground-fault test module, a ground load detection module, and a fail-safe module. In some examples, the GFCI device may include the stated modules in accordance with the UL 943C standard.
摘要翻译： 公开了一种三相GFCI装置。 三相GFCI装置可以包括接触器，接触器控制模块被配置为在GFCI装置的正常操作期间使接触器关闭并基于接收到故障信号而断开，电流检测模块，瞬态抑制模块， 模块，接地故障测试模块，接地负载检测模块和故障安全模块。 在一些示例中，GFCI设备可以包括根据UL 943C标准的所述模块。
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公开(公告)号：US08847573B2
公开(公告)日：2014-09-30
申请号：US13474814
申请日：2012-05-18
CPC分类号： H01F38/28 , H01F38/32 , H01F2038/305
摘要： A single-coil, toroid-type current transformer circuit for detecting both AC and DC current. The current transformer circuit may include a current transformer and an oscillator electrically connected to the current transformer. The current transformer circuit may further include an open and short CT detection circuit electrically connected to the oscillator for facilitating determination of the connection and stability state of the current transformer. A processor may be electrically connected to an output of the open and short CT detection circuit for performing a series of operations on signal data generated by the open and short CT detection circuit and manipulating the operation of an electrical power system accordingly.
摘要翻译： 用于检测交流和直流电流的单线圈，环形电流互感器电路。 电流互感器电路可以包括电流互感器和电连接到电流互感器的振荡器。 电流互感器电路还可以包括电连接到振荡器的开路和短路CT检测电路，以便于确定电流互感器的连接和稳定状态。 处理器可以电连接到开路和短路CT检测电路的输出，以对由开放和短路CT检测电路产生的信号数据执行一系列操作，并相应地操纵电力系统的操作。
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