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公开(公告)号：US08446151B2
公开(公告)日：2013-05-21
申请号：US13311224
申请日：2011-12-05
CPC分类号： H02H3/05 , H01H71/20 , H01H83/04 , H01H2071/044 , H01H2083/201 , H02H3/335 , H02H3/338
摘要： The present invention is directed to an electrical wiring device that includes at least one user accessible input mechanism and a test assembly configured to initiate a self-test in response to stimulus signal. The self test determines whether a sensor, a fault detection circuit or a circuit interrupter assembly are in an operational mode or are in a failure mode, the reset stimulus being provided in the operational mode and a reset lockout stimulus being provided in the failure mode. The device also including a reset lockout mechanism coupled to the circuit interrupter assembly and the test assembly. The reset lockout mechanism is configured to disable the reset stimulus in response to the reset lockout stimulus if any one of the at least one sensor, at least one fault detection circuit, or circuit interrupter assembly is determined to be in the failure mode after a predetermined time elapses.
摘要翻译： 本发明涉及一种电线设备，其包括至少一个用户可访问输入机构和被配置为响应于刺激信号而启动自检的测试组件。 自检确定传感器，故障检测电路或电路断路器组件是处于工作模式还是处于故障模式，在操作模式下提供复位激励，并且在故障模式下提供复位锁定激励。 该装置还包括耦合到电路断续器组件和测试组件的复位锁定机构。 复位锁定机构被配置为当所述至少一个传感器，至少一个故障检测电路或断路器组件中的任何一个被确定为在预定的故障模式之后处于故障模式时，响应于所述复位锁定激励来禁用所述复位刺激 时间过去了
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公开(公告)号：US20110148423A1
公开(公告)日：2011-06-23
申请号：US12955581
申请日：2010-11-29
IPC分类号： G01R31/327
CPC分类号： G01R35/00 , G01R31/024 , G01R31/14 , G01R31/28 , G01R31/2829 , G01R31/3277 , H01H73/045 , H01H2071/044 , H02H3/335
摘要： The present invention is directed to an electrical wiring device that includes at least one sensor that provides a sensor output signal corresponding to electrical perturbations propagating on the plurality of line terminals or the plurality of load terminals. A protective circuit assembly configured to detect a fault condition when the sensor output signal substantially corresponds to at least one predetermined fault criterion and generate a trip actuation signal in response thereto. A solenoid coil is configured to generate a trip actuation force in response to the trip actuation signal. A circuit interrupter assembly includes movable contacts configured to be driven into a tripped state in response to the trip actuation force. An automatic fault simulation circuit is configured to generate a self-test signal without execution of software code. The self-test signal is generated such that it is sensed by the at least one sensor if the at least one sensor is operational. An end-of-life detection circuit is coupled to the protective circuit assembly. The end-of-life detection circuit is configured to monitor the protective circuit assembly without execution of software code. The end-of-life detection circuit is configured to substantially inhibit the trip actuation force when the protective circuit assembly detects the fault condition and generates the trip actuation signal in response to the self-test signal. The end-of-life detection circuit is configured to generate an end-of-life response if the protective circuit assembly does not respond to the self-test signal within a predetermined period of time.
摘要翻译： 本发明涉及一种电线装置，其包括至少一个传感器，该传感器提供对应于在多个线路终端或多个负载终端上传播的电扰动的传感器输出信号。 保护电路组件，被配置为当所述传感器输出信号基本上对应于至少一个预定故障标准时检测故障状况，并响应于此产生跳闸致动信号。 电磁线圈构造成响应于跳闸致动信号而产生跳闸致动力。 电路断续器组件包括响应于跳闸致动力被配置为被驱动到跳闸状态的可动触头。 自动故障模拟电路被配置为在不执行软件代码的情况下产生自检信号。 生成自检信号，使得如果至少一个传感器是可操作的，则其由至少一个传感器感测。 寿命终止检测电路耦合到保护电路组件。 寿命终止检测电路被配置为监视保护电路组件而不执行软件代码。 寿命终止检测电路被配置为当保护电路组件检测到故障状况时基本上禁止跳闸致动力，并且响应于自检信号产生跳闸致动信号。 寿命终止检测电路被配置为如果保护电路组件在预定时间段内没有对自检信号做出响应，则产生寿命终止响应。
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公开(公告)号：US20110115511A1
公开(公告)日：2011-05-19
申请号：US12953538
申请日：2010-11-24
申请人： David A. Finlay, SR. , Bruce F. Macbeth , Kent R. Morgan , Patrick J. Murphy , Thomas N. Packard , Jeffrey C. Richards , Gerald R. Savicki, JR. , Richard Weeks
发明人： David A. Finlay, SR. , Bruce F. Macbeth , Kent R. Morgan , Patrick J. Murphy , Thomas N. Packard , Jeffrey C. Richards , Gerald R. Savicki, JR. , Richard Weeks
IPC分类号： G01R31/3187
CPC分类号： H01H83/04 , H01H2071/044
摘要： The present invention is directed to an electrical wiring device that includes an actuator assembly that is responsive to the fault detection signal. The actuator assembly includes a breaker coil configured to generate an actuation force in response to being energized. A circuit interrupter includes four sets of movable contacts configured to be driven into a reset state in response to a reset stimulus, the four sets of movable contacts being configured to be driven into a tripped state in response to the actuation force. A self-test circuit is coupled to the plurality of line terminals or the at least one sensor. The self-test circuit is configured to automatically generate a test signal from time to time during a predetermined portion of an AC power line cycle. The self-test circuit is configured such that the test signal is sensed by the at least one sensor when the at least one sensor is operational, the sensor output signal being a function of the test signal. A monitor circuit is configured to monitor the fault detection circuit or the actuator assembly; the mechanical actuation force is substantially inhibited when the fault detection circuit or at least a portion of the actuator assembly properly respond to the test signal. The monitor circuit generates an end-of-life response if the fault detection circuit or the actuator assembly do not respond to the test signal within a predetermined period of time.
摘要翻译： 本发明涉及一种电接线装置，其包括响应故障检测信号的致动器组件。 所述致动器组件包括断路器线圈，所述断路器线圈被配置为响应于通电而产生致动力。 电路断续器包括四组可动触点，其被配置为响应于复位刺激而被驱动到复位状态，四组可动触头被配置为响应于致动力而被驱动到跳闸状态。 自检电路耦合到多个线路终端或至少一个传感器。 自检电路被配置为在AC电力线周期的预定部分期间不时地自动生成测试信号。 所述自检电路被配置成使得当所述至少一个传感器可操作时所述至少一个传感器检测所述测试信号，所述传感器输出信号是所述测试信号的函数。 监视器电路被配置为监视故障检测电路或致动器组件; 当故障检测电路或致动器组件的至少一部分适当地响应于测试信号时，机械致动力被基本上禁止。 如果故障检测电路或致动器组件在预定时间段内没有响应于测试信号，则监视器电路产生寿命终止响应。
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公开(公告)号：US06373257B1
公开(公告)日：2002-04-16
申请号：US09208193
申请日：1998-12-09
IPC分类号： G01R3108
CPC分类号： G01R31/3277 , H02H1/0015
摘要： An arc fault detector for detecting electric power lines includes a sensor for sensing the derivative of the current on the electric power line, a converter circuit for converting the derivative of the line current into first and second signals, the first signal responsive to positive step transitions of arc fault current, and the second signal responsive to negative step transitions of arc current, and a temporal detector for signaling the presence of an arc fault when one of the first and second signals follows the other within a predetermined time, or window, and in which a sequence of one of the signals following the other signal occurs in a second predetermined interval of time.
摘要翻译： 用于检测电力线的电弧故障检测器包括用于感测电力线路上的电流的导数的传感器，用于将线路电流的导数转换为第一和第二信号的转换器电路，响应于正步骤转换的第一信号 电弧故障电流的第二信号，以及响应于电弧电流的负步骤转变的第二信号，以及用于在第一和第二信号之一在预定时间或窗口内彼此跟随时发出电弧故障的信号的时间检测器，以及 其中在第二预定时间间隔内发生跟随另一信号的一个信号的序列。
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公开(公告)号：US20090251148A1
公开(公告)日：2009-10-08
申请号：US12247848
申请日：2008-10-08
IPC分类号： G01R31/27
CPC分类号： G01R35/00 , G01R31/024 , G01R31/14 , G01R31/28 , G01R31/2829 , G01R31/3277 , H01H73/045 , H01H2071/044 , H02H3/335
摘要： The present invention is directed to an electrical wiring device that includes an automatic self-test assembly coupled to the plurality of line terminals or the plurality of load terminals, the detection circuit, the fault detection circuit and the circuit interrupter assembly. The automatic self-test assembly is configured to cause the detection circuit to generate a simulated sensor fault signal during a predetermined half-cycle of an AC line cycle in accordance with a predetermined periodic testing schedule, monitor the fault detection signal corresponding to the simulated sensor fault signal, and generate a test result signal based on monitoring the fault detection signal. The automatic self-test assembly also includes a noise immunized decision circuit configured to evaluate a plurality of test results to thereby provide a noise immunized end-of-life signal. One of the conductive paths that connects the plurality of line terminals and the plurality of load terminals being interrupted in response to the noise immunized end-of-life signal.
摘要翻译： 本发明涉及一种电气接线装置，其包括耦合到多个线路端子或多个负载端子，检测电路，故障检测电路和断路器组件的自动自检组件。 自动自检组件被配置为使得检测电路根据预定的周期性测试计划在AC线路周期的预定半周期期间产生模拟的传感器故障信号，监视对应于模拟传感器的故障检测信号 故障信号，并根据监控故障检测信号生成测试结果信号。 自动自检组件还包括被配置为评估多个测试结果从而提供噪声免疫的寿命终止信号的噪声免疫判定电路。 连接多个线路终端和多个负载终端的导电路径之一被响应于噪声免疫的寿命终止信号而中断。
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公开(公告)号：US06570392B2
公开(公告)日：2003-05-27
申请号：US09996464
申请日：2001-11-28
IPC分类号： H01H950
CPC分类号： H02H1/0015 , G01R31/12
摘要： Briefly stated, and in accordance with a presently preferred embodiment of the invention, an arc fault detecting circuit using, a pulse width modulation, or PWM, technique is used to sense series or parallel arc faults. When arc faults occur, typically an arc step in current is followed by broad band arc noise which is caused by the random fluctuations in arc column resistance. In this invention, a logic signal is created which has a duration or width that corresponds to the time interval during which the broad band arc noise generated by the arc is present. Typically an arc fault randomly starts, generates broad band arc noise, and then extinguishes as the next current zero cross of the AC load current is approached. The random start causes PWM of the logic pulse whenever the start of the arc randomly moves with respect to the current zero cross. An arc fault that randomly starts, and then randomly stops, will also cause PWM with respect to the zero cross. The PWM logic pulse is coupled to the input of a microprocessor which measures and stores the length of the present PWM pulse under measurement, and compares that pulse to the pulse length of the last stored PWM pulse, and increments a counter if the difference in pulse length is greater than a predetermined amount. When the counter number is greater than or equal to a predetermined number held in the microprocessor memory, an output signal is sent to a controller which activates the circuit interrupter. Another input to the microprocessor, corresponding to the magnitude of the arc current, is used to adjust the predetermined number value down or up depending on the intensity of the arc fault for faster or slower interrupts respectively.
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7.发明授权AFCI device which detects upstream and downstream series and parallel ARC faults 有权检测上游和下游串联和并联ARC故障的AFCI设备公开(公告)号：US06504692B1
公开(公告)日：2003-01-07
申请号：US09828622
申请日：2001-04-06
IPC分类号： H02H908
CPC分类号： H02H1/04 , H02H1/0015 , H02H3/44 , H02H3/50
摘要： Downstream series and parallel arcing in AC power lines is determined by using a detector and microprocessor to detect characteristic di/dt behavior received from a current sensor through which the power lines pass. When downstream parallel arcing is detected, the microprocessor uses a speedy algorithm which cannot be used to detect series arcing. Upstream series arcing is detected by sensing a flat voltage portion of the line voltage. Upstream parallel arcing is detected by sensing a voltage spike followed by a voltage flat portion of the line voltage. When upstream parallel arcing is detected, the microprocessor is temporarily shut off to avoid false tripping.
摘要翻译： 通过使用检测器和微处理器来检测从电力线通过的电流传感器接收的特性di / dt行为来确定AC电力线中的下游串联和并联电弧。 当检测到下游并联电弧时，微处理器使用不能用于检测串联电弧的快速算法。 通过检测线路电压的平坦电压部分来检测上游串联电弧。 通过感测电压尖峰，随后是线路电压的电压平坦部分来检测上游并联电弧。 当检测到上游并联电弧时，微处理器暂时关闭，以避免错误跳闸。
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公开(公告)号：US06377055B1
公开(公告)日：2002-04-23
申请号：US09464163
申请日：1999-12-16
IPC分类号： G01R3108
CPC分类号： G01R31/3275 , H02H1/0015
摘要： An arc fault detector for detecting an arc fault in electric power lines includes a two stage arc sensor. The first stage is a current transformer designed for high sensitivity to arc faults but which may saturate and lose detection capability during arc currents at 75A and higher. The second arc fault sensor, which does not saturate, stage senses the voltage across the impedance of the primary of the current transformer, or senses the voltage across the resistance of a section of the load carrying bus which forms the connection through the detector device, or of both, during an arc fault.
摘要翻译： 用于检测电力线中的电弧故障的电弧故障检测器包括两级电弧传感器。 第一阶段是电流互感器，设计用于对电弧故障的高灵敏度，但在75A及更高的电弧电流下可能会饱和并失去检测能力。 不饱和的第二电弧故障传感器级感测电流互感器的主电流的阻抗上的电压，或感测通过检测器装置形成连接的承载总线的一部分的电阻两端的电压， 或两者之间，在电弧故障期间。
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公开(公告)号：US20110080677A1
公开(公告)日：2011-04-07
申请号：US12966661
申请日：2010-12-13
IPC分类号： H02H3/02
CPC分类号： H02H3/05 , H01H71/20 , H01H83/04 , H01H2071/044 , H01H2083/201 , H02H3/335 , H02H3/338
摘要： The present invention is directed to a protective device that includes a plurality of line terminals and a plurality of load terminals, the plurality of load terminals including a plurality of hot load terminals and a plurality of neutral load terminals. The device also includes a circuit interrupter having four sets of moveable contacts, the four sets of moveable contacts being configured to couple the plurality of line terminal to the plurality of load terminals in a reset state and to decouple the plurality of line terminals from the plurality of load terminals in a tripped state. A test circuit includes an end of life detection circuit coupled to the plurality of line terminals or the plurality of load terminals by a switch mechanism associated with the four sets of moveable contacts. The test circuit includes a manually actuatable button and a fusible element, the fusible element assuming a permanently open state if the circuit interrupter does not enter the tripped state within a predetermined period after the manually actuatable button has been actuated.
摘要翻译： 本发明涉及一种保护装置，其包括多个线路端子和多个负载端子，所述多个负载端子包括多个热负载端子和多个中性负载端子。 该装置还包括具有四组可移动触点的电路断流器，四组可移动触点被配置为在复位状态下将多个线路端子耦合到多个负载端子，并且将多个线路端子与多个线路端子分离 负载端子处于跳闸状态。 测试电路包括通过与四组可移动触点相关联的开关机构耦合到多个线路终端或多个负载终端的寿命终止检测电路。 测试电路包括可手动致动的按钮和可熔元件，如果在可手动致动按钮被致动之后的预定时间段内电路断路器不进入跳闸状态，则该可熔元件假定永久打开状态。
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公开(公告)号：US06839208B2
公开(公告)日：2005-01-04
申请号：US09788206
申请日：2001-02-16
CPC分类号： H02H1/0015 , G01R31/14 , H02H3/44
摘要： An arc fault circuit interrupter (AFCI) detects arc faults by identifying the various signature patterns of arc fault noise while rejecting arc mimicking noise from normal load phenomena.
摘要翻译： 电弧故障电路断路器（AFCI）通过识别电弧故障噪声的各种特征图案来检测电弧故障，同时从正常负载现象中排除电弧模拟噪声。
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