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1. 发明授权

US07898781B2 Arc fault detection apparatus employing a comparator with a continuously variable threshold 有权
标题翻译：电弧故障检测装置采用具有连续可变阈值的比较器
公开(公告)号：US07898781B2
公开(公告)日：2011-03-01
申请号：US12184297
申请日：2008-08-01
申请人： Keith W. Kawate , Lynwald Edmunds , Roger D. Mayer
发明人： Keith W. Kawate , Lynwald Edmunds , Roger D. Mayer
IPC分类号： H02H3/05 , H02H3/08 , H02H3/38
CPC分类号： H02H1/0015 , H02H3/006
摘要： An arc fault detection apparatus that provides for better discrimination of electrical arcing events from nuisance loads. The arc fault detection apparatus includes an arcing sense circuit having a comparator circuit with a variable threshold voltage that varies continuously with the line voltage. The arc fault detection apparatus has reduced susceptibility to nuisance tripping in the presence of sudden changes in the load current that occur outside of a specified time window centered on each zero crossing point of the line voltage.
摘要翻译：一种电弧故障检测装置，其能够更好地区分来自妨扰负载的电弧事件。电弧故障检测装置包括具有可变阈值电压的比较器电路的电弧感测电路，其随线电压连续变化。在存在以线路电压的每个过零点为中心的规定时间窗外的负载电流的突然变化的情况下，电弧故障检测装置降低了对妨碍跳闸的敏感性。

2. 发明申请

US20100027176A1 ARC FAULT DETECTION APPARATUS EMPLOYING A COMPARATOR WITH A CONTINUOUSLY VARIABLE THRESHOLD 有权
标题翻译：使用连续可变阈值的比较器的ARC故障检测装置
公开(公告)号：US20100027176A1
公开(公告)日：2010-02-04
申请号：US12184297
申请日：2008-08-01
申请人： Keith W. Kawate , Lynwald Edmunds , Roger D. Mayer
发明人： Keith W. Kawate , Lynwald Edmunds , Roger D. Mayer
IPC分类号： H02H3/20
CPC分类号： H02H1/0015 , H02H3/006
摘要： An arc fault detection apparatus that provides for better discrimination of electrical arcing events from nuisance loads. The arc fault detection apparatus includes an arcing sense circuit having a comparator circuit with a variable threshold voltage that varies continuously with the line voltage. The arc fault detection apparatus has reduced susceptibility to nuisance tripping in the presence of sudden changes in the load current that occur outside of a specified time window centered on each zero crossing point of the line voltage.
摘要翻译：一种电弧故障检测装置，其能够更好地区分来自妨扰负载的电弧事件。电弧故障检测装置包括具有可变阈值电压的比较器电路的电弧感测电路，其随线电压连续变化。在存在以线路电压的每个过零点为中心的规定时间窗外的负载电流的突然变化的情况下，电弧故障检测装置降低了对妨碍跳闸的敏感性。

3. 发明授权

US07190562B2 Method for detecting arc faults 有权
标题翻译：电弧故障检测方法
公开(公告)号：US07190562B2
公开(公告)日：2007-03-13
申请号：US10937487
申请日：2004-09-09
申请人： Christian V. Pellon , Mark D. Rabiner , Michael Parker , Christopher A. Nicolls , Keith W. Kawate , Robert Zanelli , Roger D. Mayer , Lucien Fontaine , Michael J. Lavado , Lynwald Edmunds , Jeffrey B. Ting
发明人： Christian V. Pellon , Mark D. Rabiner , Michael Parker , Christopher A. Nicolls , Keith W. Kawate , Robert Zanelli , Roger D. Mayer , Lucien Fontaine , Michael J. Lavado , Lynwald Edmunds , Jeffrey B. Ting
IPC分类号： H02H3/00
CPC分类号： H02H1/0015 , H02H1/0092
摘要： An apparatus and method for detecting arc faults that have reduced susceptibility to nuisance tripping. The apparatus includes a current sensor, an input sense circuit, an arcing sense circuit, a power supply, a tripping (firing) circuit, a processor, and an electromechanical interface. The current sensor monitors a power input comprising an AC current, and provides high frequency components of the. AC current to the input sense circuit. The input sense circuit filters and rectifies the AC signal, and provides the rectified signal to the arcing sense circuit. The arcing sense circuit provides a voltage level accumulated over a predetermined time period, and digital signals indicative of possible electrical arcing occurring during the sampling period, to the processor. The processor measures the voltage level, stores information relating to measured voltages and the digital signals, and processes the stored information using one or more algorithms, thereby determining whether the signals resulted from an arc fault or a nuisance load. In the event the signals resulted from an arc fault, the processor activates the firing circuit to trip the electromechanical interface, thereby interrupting the power output to the load.
摘要翻译：用于检测电弧故障的装置和方法，其具有降低的对故障跳闸的敏感性。该装置包括电流传感器，输入检测电路，电弧感测电路，电源，跳闸（点火）电路，处理器和机电接口。电流传感器监测包括AC电流的功率输入，并提供高频分量。交流电流到输入检测电路。输入检测电路对AC信号进行滤波和整流，并将整流后的信号提供给电弧感测电路。电弧感测电路提供在预定时间段内累积的电压电平，以及指示在采样周期期间发生的可能的电弧放电的数字信号到处理器。处理器测量电压电平，存储与测量电压和数字信号有关的信息，并使用一种或多种算法对存储的信息进行处理，从而确定信号是由电弧故障还是由妨扰负载引起的。在信号由于电弧故障引起的情况下，处理器激活点火电路以使机电接口跳闸，从而中断输出到负载的功率。

4. 发明授权

US07190561B2 Apparatus for detecting arc faults 有权
标题翻译：电弧故障检测装置
公开(公告)号：US07190561B2
公开(公告)日：2007-03-13
申请号：US10937486
申请日：2004-09-09
申请人： Christian V. Pellon , Mark D. Rabiner , Michael Parker , Christopher A. Nicolls , Keith W. Kawate , Robert Zanelli , Roger D. Mayer , Lucien Fontaine , Michael J. Lavado , Lynwald Edmunds , Jeffrey B. Ting
发明人： Christian V. Pellon , Mark D. Rabiner , Michael Parker , Christopher A. Nicolls , Keith W. Kawate , Robert Zanelli , Roger D. Mayer , Lucien Fontaine , Michael J. Lavado , Lynwald Edmunds , Jeffrey B. Ting
IPC分类号： H02H3/00
CPC分类号： H02H1/0015 , H02H1/04
摘要： An apparatus and method for detecting arc faults that have reduced susceptibility to nuisance tripping. The apparatus includes a current sensor, an input sense circuit, an arcing sense circuit, a power supply, a tripping (firing) circuit, a processor, and an electromechanical interface. The current sensor monitors a power input comprising an AC current, and provides high frequency components of the. AC current to the input sense circuit. The input sense circuit filters and rectifies the AC signal, and provides the rectified signal to the arcing sense circuit. The arcing sense circuit provides a voltage level accumulated over a predetermined time period, and digital signals indicative of possible electrical arcing occurring during the sampling period, to the processor. The processor measures the voltage level, stores information relating to measured voltages and the digital signals, and processes the stored information using one or more algorithms, thereby determining whether the signals resulted from an arc fault or a nuisance load. In the event the signals resulted from an arc fault, the processor activates the firing circuit to trip the electromechanical interface, thereby interrupting the power output to the load.
摘要翻译：用于检测电弧故障的装置和方法，其具有降低的对故障跳闸的敏感性。该装置包括电流传感器，输入检测电路，电弧感测电路，电源，跳闸（点火）电路，处理器和机电接口。电流传感器监测包括AC电流的功率输入，并提供高频分量。交流电流到输入检测电路。输入检测电路对AC信号进行滤波和整流，并将整流后的信号提供给电弧感测电路。电弧感测电路提供在预定时间段内累积的电压电平，以及指示在采样周期期间发生的可能的电弧放电的数字信号到处理器。处理器测量电压电平，存储与测量电压和数字信号有关的信息，并使用一种或多种算法对存储的信息进行处理，从而确定信号是由电弧故障还是由妨扰负载引起的。在信号由于电弧故障引起的情况下，处理器激活点火电路以使机电接口跳闸，从而中断输出到负载的功率。

5. 发明授权

US07242291B2 Arc fault circuit interrupter test circuit and test board 失效
公开(公告)号：US07242291B2
公开(公告)日：2007-07-10
申请号：US11147846
申请日：2005-06-08
申请人： Christopher A. Nicolls , Roger D. Mayer
发明人： Christopher A. Nicolls , Roger D. Mayer
IPC分类号： G08B29/00 , H02H3/00 , G01R31/08
CPC分类号： G01R31/3277
摘要： A tester for an arc fault circuit interrupter that can selectively simulate and apply electrical arc faults and nuisance loads to at least one device under test (DUT). The tester includes a power supply, a test controller, and test circuitry coupleable to a DUT. AC power input is provided to the DUT and the power supply, which regulates the AC power input to a DC level for powering the test controller. The test circuitry full wave rectifies AC current returning from the DUT, and the test controller controls a switch in the test circuitry. When the switch is on, the AC current flows through the DUT, the full wave rectifier, the load, and the switch to ground. To simulate an arcing condition, the test controller turns the switch on and off at random intervals. To simulate a nuisance load condition, the test controller turns the switch on and off at periodic intervals. In this way, proper operation of the DUT can be verified under both arcing and nuisance load conditions.

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