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公开(公告)号：US09645192B2
公开(公告)日：2017-05-09
申请号：US13829394
申请日：2013-03-14
发明人： Riley D. Beck , Kent D. Layton , Scott R. Grange
IPC分类号： G01R31/3187 , G01R31/28 , H02H3/33
CPC分类号： G01R31/2827 , H02H3/33 , H02H3/335
摘要： A ground fault interrupter circuit and a method for operating a ground fault interrupter that includes configuring the ground fault interrupter to perform a plurality of self tests. The ground fault interrupter may be configured to perform a ground fault self test, a grounded-neutral self test, and a trip circuit self test.
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公开(公告)号：US09478969B2
公开(公告)日：2016-10-25
申请号：US13829417
申请日：2013-03-14
发明人： Riley D. Beck , Scott R. Grange
CPC分类号： H02H3/162 , H02H1/0092 , H02H1/04 , H02H3/33
摘要： A method for operating a ground fault circuit interrupter. In accordance with an embodiment, an operating parameter of the ground fault circuit interrupter can be adjusted in response to an alternating current line signal and a reference signal. In accordance with another embodiment a plurality of indicator signals are generated in response to an alternating current signal. The indicator signals are used to generate one or more control signals and at least one of the control signals is used to control a control a ground fault circuit interrupter.
摘要翻译： 一种操作接地故障电路断路器的方法。 根据实施例，可以响应于交流线路信号和参考信号来调整接地故障电路中断器的操作参数。 根据另一实施例，响应于交流信号产生多个指示符信号。 指示器信号用于产生一个或多个控制信号，并且至少一个控制信号用于控制接地故障电路断续器的控制。
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公开(公告)号：US10141734B2
公开(公告)日：2018-11-27
申请号：US14850271
申请日：2015-09-10
IPC分类号： H02H3/44 , G01R19/165 , H01H83/04 , H01H83/14
摘要： Aspects of an electrical safety device that provides detection of miswiring of line and load connection pairs are presented. In an example, the device includes a differential current detector through which are routed a live current path and a neutral current path coupling the line and load connection pairs. The device also includes a selectable conducting path that, when selected, circumvents the differential current detector while coupling one of a line live connection to a load live connection or a line neutral connection to a load neutral connection of the connection pairs. The device further includes a control circuit that determines, via the differential current detector, while the conducting path is selected, a differential current defined by a difference in currents on the live and neutral current paths, and interrupts at least one of the live and neutral current paths in response to the differential current not exceeding a threshold value.
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公开(公告)号：US09330875B2
公开(公告)日：2016-05-03
申请号：US13752596
申请日：2013-01-29
CPC分类号： H01H83/02 , G01R31/027 , H02H3/044 , H02H3/33
摘要： A method for determining a circuit element parameter in a ground fault circuit interrupter circuit. An electrical signal provided to a first node is used to generate another electrical signal at a second node. The electrical signal at the second node is multiplexed with a modulation signal to generate a modulated signal that is then filtered and converted into a digital representation of a portion of the circuit element parameter. The electrical signal at the second node is multiplexed with the modulation signal after it has been phase shifted to produce a modulated signal that is filter and converted into a digital representation of another portion of the circuit element parameter. In another aspect, a slope based solenoid self-test method is used for self-testing in a GFCI circuit. Alternatively, a method for determining a wiring fault is provided using a digital filter.
摘要翻译： 一种用于确定接地故障电路断续器电路中的电路元件参数的方法。 提供给第一节点的电信号用于在第二节点产生另一电信号。 第二节点处的电信号与调制信号多路复用，以产生经过滤波的调制信号，并将其转换为电路元件参数的一部分的数字表示。 第二节点上的电信号在相移之后与调制信号多路复用，以产生被滤波的调制信号并转换成电路元件参数的另一部分的数字表示。 另一方面，在GFCI电路中使用基于斜率的电磁自检方法进行自检。 或者，使用数字滤波器提供用于确定布线故障的方法。
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公开(公告)号：US09897636B2
公开(公告)日：2018-02-20
申请号：US15138534
申请日：2016-04-26
摘要： A single wound single current transformer impedance measurement circuit for determining a circuit element parameter in a ground fault circuit interrupter circuit. The circuit includes a transconductance amplifier having first and second input terminals and first and second output terminals. In an embodiment, a first detector has input terminal coupled to the first output terminal of the transconductance amplifier and another input terminal coupled for receiving a first electrical signal. A second detector has a terminal coupled to the second output terminal of the transconductance amplifier and an input terminal coupled for receiving the first electrical signal. Alternatively, the second detector has an input terminal coupled to the first output terminal of the transconductance amplifier and another input terminal coupled for receiving the first electrical signal.
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公开(公告)号：US20160238644A1
公开(公告)日：2016-08-18
申请号：US15138534
申请日：2016-04-26
摘要： A single wound single current transformer impedance measurement circuit for determining a circuit element parameter in a ground fault circuit interrupter circuit. The circuit includes a transconductance amplifier having first and second input terminals and first and second output terminals. In an embodiment, a first detector has input terminal coupled to the first output terminal of the transconductance amplifier and another input terminal coupled for receiving a first electrical signal. A second detector has a terminal coupled to the second output terminal of the transconductance amplifier and an input terminal coupled for receiving the first electrical signal. Alternatively, the second detector has an input terminal coupled to the first output terminal of the transconductance amplifier and another input terminal coupled for receiving the first electrical signal.
摘要翻译： 单绕组单电流互感器阻抗测量电路，用于确定接地故障电路断路器电路中的电路元件参数。 该电路包括具有第一和第二输入端以及第一和第二输出端的跨导放大器。 在一个实施例中，第一检测器具有耦合到跨导放大器的第一输出端的输入端和被耦合用于接收第一电信号的另一输入端。 第二检测器具有耦合到跨导放大器的第二输出端的端子和耦合用于接收第一电信号的输入端。 或者，第二检测器具有耦合到跨导放大器的第一输出端的输入端和被耦合用于接收第一电信号的另一输入端。
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公开(公告)号：US20160233837A1
公开(公告)日：2016-08-11
申请号：US15132775
申请日：2016-04-19
发明人： Riley D. Beck , Scott R. Grange
CPC分类号： H03F1/303 , G01R27/18 , G01R31/025 , H02H1/0092 , H02H1/04 , H02H3/162 , H02H3/33 , H03F3/45 , H03F2203/45152 , H03F2203/45228 , H03F2203/45288
摘要： A method and circuit for dynamically correcting offsets associated with an AC power system. In an embodiment, a first offset current generated in response to a ground to neutral fault stimulus is decreased and a second offset current generated in response to a differential fault stimulus is decreased. In another embodiment, the circuit includes an offset correction circuit that has one of a chopper circuit or an auto-zeroing circuit. An amplifier is connected to the offset correction circuit and an output connected to the offset correction circuit. A signal generator is switchably coupled to a first input of the offset correction circuit and a bias generator is switchably coupled to the first input of the offset correction circuit.
摘要翻译： 一种用于动态校正与交流电力系统相关联的偏移的方法和电路。 在一个实施例中，响应于接地到中性故障刺激而产生的第一偏移电流减小，并且响应于差分故障刺激而产生的第二偏移电流减小。 在另一个实施例中，电路包括具有斩波电路或自动归零电路之一的偏移校正电路。 放大器连接到偏移校正电路和连接到偏移校正电路的输出。 信号发生器可切换地耦合到偏移校正电路的第一输入端，并且偏置发生器可切换地耦合到偏移校正电路的第一输入端。
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公开(公告)号：US09329216B2
公开(公告)日：2016-05-03
申请号：US13752565
申请日：2013-01-29
摘要： A method and circuit for determining a circuit element parameter in a ground fault circuit interrupter circuit. An electrical signal provided to a first node is used to generate another electrical signal at a second node. The electrical signal at the second node is multiplexed with a modulation signal to generate a modulated signal that is then filtered and converted into a digital representation of a portion of the circuit element parameter. The electrical signal at the second node is multiplexed with the modulation signal after it has been phase shifted to produce a modulated signal that is filter and converted into a digital representation of another portion of the circuit element parameter. In another aspect, a slope based solenoid self-test method is used for self-testing in a GFCI circuit. Alternatively, a method for determining a wiring fault is provided using a digital filter.
摘要翻译： 一种用于确定接地故障电路断续器电路中的电路元件参数的方法和电路。 提供给第一节点的电信号用于在第二节点产生另一电信号。 第二节点处的电信号与调制信号多路复用，以产生经过滤波的调制信号，并将其转换为电路元件参数的一部分的数字表示。 第二节点上的电信号在相移之后与调制信号多路复用，以产生被滤波的调制信号并转换成电路元件参数的另一部分的数字表示。 另一方面，在GFCI电路中使用基于斜率的电磁自检方法进行自检。 或者，使用数字滤波器提供用于确定布线故障的方法。
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