Arc fault detector with circuit interrupter

    公开(公告)号:US06639769B2

    公开(公告)日:2003-10-28

    申请号:US10120462

    申请日:2002-04-11

    IPC分类号: H02H300

    摘要: An arc fault circuit interrupter (AFCI) device functions to provide protection from potentially dangerous arc faults. The arc fault detector can be used stand alone or in combination with circuit interrupting devices such as IDCIs and ALCIs. The AFCI device detects both AC line frequencies and high frequencies associated with arcing. Both average and instantaneous values of both AC line frequency and high frequency arcing signals are processed to generate an arc fault signal. The trip mechanism of the device trips on the occurrence of either an arc fault or a ground fault. The device allows the arc detector to differentiate between destructive high level arcing and low level arcing such as generated by typical household appliances and equipment. This serves to decrease the occurrence of false tripping. The device also includes a timer circuit, which permits the user to temporarily disable the arc detector, and includes communication means to permit the device to communicate the occurrence and location of the arc fault to a centralized monitoring station.

    Arc fault detector with circuit interrupter and early arc fault detection
    5.
    发明授权
    Arc fault detector with circuit interrupter and early arc fault detection 失效
    具有断路器和早期电弧故障检测的电弧故障检测器

    公开(公告)号:US06407893B1

    公开(公告)日:2002-06-18

    申请号:US09677801

    申请日:2000-10-02

    IPC分类号: H02H908

    摘要: An arc fault detector comprised as a stand alone unit and in combination with a ground fault circuit interrupter (GFCI) functions to provide protection from potentially dangerous arc fault conditions. When combined with a GFCI, the combination arc fault/ground fault circuit interrupter (AFCI/GFCI) provides protection from both arc fault and ground fault conditions. A single transformer is used to detect faults between neutral and ground and arc faults. An impedance splits the current flow into two portions so as to generate differential current proportional to the current flowing through the conductors. An early arcing detector periodically tests the AC line for high impedance between the device and a main breaker panel. The AFCI/GFCI device detects both AC line frequencies and high frequencies associated with arcing. Both average and instantaneous values of both AC line frequency and high frequency arcing signals are processed to generate an arc fault signal. The device allows the arc detector to differentiate between destructive high level arcing and low level arcing such as generated by typical household appliances and equipment. This serves to decrease the occurrence of false tripping. The device also includes a timer circuit, which permits the user to temporarily disable the arc detector, and includes communication means to permit the device to communicate the occurrence and location of the arc fault to a centralized monitoring station.

    摘要翻译: 包括作为独立单元并与接地故障断路器(GFCI)组合的电弧故障检测器用于提供防止潜在危险的电弧故障条件的保护。 当与GFCI组合时,组合电弧故障/接地故障电路断路器(AFCI / GFCI)可提供电弧故障和接地故障条件的保护。 单个变压器用于检测中性线和地线与电弧故障之间的故障。 阻抗将电流分成两部分,以便产生与流过导体的电流成比例的差分电流。 早期电弧检测器周期性地测试AC线路在器件和主断路器面板之间的高阻抗。 AFCI / GFCI设备检测AC线频率和与电弧相关的高频。 交流线路频率和高频电弧信号的平均值和瞬时值都被处理以产生电弧故障信号。 该装置允许电弧检测器区分由典型的家用电器和设备产生的破坏性高电平电弧和低电平电弧。 这有助于减少错误跳闸的发生。 该设备还包括定时器电路,其允许用户临时禁用电弧检测器,并且包括通信装置,以允许设备将电弧故障的发生和位置通信到集中监视站。

    Circuit interrupter with continuous self-testing feature
    7.
    发明授权
    Circuit interrupter with continuous self-testing feature 有权
    具有连续自检功能的断路器

    公开(公告)号:US08183869B2

    公开(公告)日:2012-05-22

    申请号:US12235869

    申请日:2008-09-23

    IPC分类号: G01R31/327 H02H3/00

    摘要: A circuit interrupter includes a current transformer, phase conductor and neutral conductor. The phase conductor and the neutral conductor are each configured to pass through the transformer from line side to load side that are defined by the current transformer. The circuit interrupter generates a continuous test current by continuous current imbalance established between the load side of the phase conductor and the line side of the neutral conductor, or between the line side of the phase conductor and the load side of the neutral conductor. A continuous test conductor may be coupled correspondingly to establish the current imbalance. Alternatively, an integrated circuit coupled correspondingly receives power and is energized by a quiescent current thereby. The current imbalance is established by the quiescent current. The current transformer detects the quiescent current as the continuous test current. Corresponding methods are also disclosed.

    摘要翻译: 电路断路器包括电流互感器,相导体和中性导体。 相导体和中性导体各自被配置为通过变压器从线路侧到负载侧,由电流互感器限定。 电路断续器通过在相导体的负载侧和中性导体的线路侧之间或相导体的线路侧和中性导体的负载侧之间建立的连续电流不平衡来产生连续的测试电流。 可以相应地连接测试导体以建立电流不平衡。 或者,耦合的集成电路相应地接收功率并由静止电流激励。 目前的不平衡是由静态电流建立的。 电流互感器检测静态电流作为连续测试电流。 还公开了相应的方法。

    ARC FAULT DETECTOR WITH CIRCUIT INTERRUPTER
    8.
    发明申请
    ARC FAULT DETECTOR WITH CIRCUIT INTERRUPTER 有权
    具有电路中断器的ARC故障检测器

    公开(公告)号:US20110181296A1

    公开(公告)日:2011-07-28

    申请号:US13080040

    申请日:2011-04-05

    IPC分类号: G01R31/02

    摘要: There is here disclosed a method and apparatus for detecting the occurrence of arcing of a conductor by monitoring the current on an AC power line. The signal detected is split and directed along four separate paths to generate four signals having separate characteristics which represent the current in the line. A first path is for a signal representative of the current flowing in the line. A second path is for a signal having a pulse for each occurrence of a positive step change in current that is significant and has a di/dt value above a predetermined value. A third path is for a signal having a pulse for each occurrence of a negative step change in current that is significant and has a di/dt value above a predetermined value. A fourth path is for a signal having a voltage level representative of the broadband noise signal on the line. Using at least one of five different methods in combination with one of three input signals, a reference signal designated as “SINE” is generated. The SINE signal generated in combination with a CURRENT input is used to produce a control waveform “DELTA”. DELTA can be represented as a relative value or as an absolute difference between the SINE and the CURRENT. Each occurring half cycle of the DELTA signal is analyzed by, for example, a micro-controller for specific identifiable characteristics found to indicate the presence of arcing. Upon the detection of arcing, an output signal can be generated to activate a circuit interrupting mechanism, sound an audio alarm and/or alert a central monitoring station.

    摘要翻译: 这里公开了通过监视交流电源线上的电流来检测导体的电弧发生的方法和装置。 检测到的信号被分离并且沿着四个分开的路径引导,以产生具有表示线路中的电流的分离特征的四个信号。 第一路径是用于表示在线路中流动的电流的信号。 第二路径是用于具有脉冲的信号,每次发生电流的正阶跃变化是有效的并且具有高于预定值的di / dt值。 第三路径用于具有脉冲的信号,每个脉冲的电流的负阶跃变化是有效的并且具有高于预定值的di / dt值。 第四路径是用于具有表示线路上的宽带噪声信号的电压电平的信号。 使用与三个输入信号中的一个组合的五种不同方法中的至少一种,生成被指定为“SINE”的参考信号。 与CURRENT输入相结合产生的SINE信号用于产生控制波形“DELTA”。 DELTA可以表示为SINE和CURRENT之间的相对值或绝对差值。 每个发生的DELTA信号的半周期通过例如微控制器进行分析,该微控制器用于指示电弧存在的特定可识别特征。 当检测到电弧时,可以产生输出信号以激活电路中断机构,发出声音报警和/或提醒中央监控站。

    GFCI with self-test and remote annunciation capabilities
    9.
    发明授权
    GFCI with self-test and remote annunciation capabilities 有权
    GFCI具有自我测试和远程报告功能

    公开(公告)号:US07911746B2

    公开(公告)日:2011-03-22

    申请号:US11756362

    申请日:2007-05-31

    IPC分类号: H02H9/08 H02H3/00 H03K17/72

    CPC分类号: H02H3/335

    摘要: Methods and techniques are disclosed for an intelligent GFCI device (IGFCI) having a microcontroller programmed to perform self-testing on a periodic basis and communicate the results of this testing to a remote monitoring device such as a remote central logging computer. In some implementations, with two-way (bidirectional) communication, a plurality of self-testing IGFCI devices can be tested and reset systematically from a remotely located device to reduce disruption to users. The IGFCI device can be configured to be automatically reset or manually reset upon the application of AC power to the device.

    摘要翻译: 公开了一种智能GFCI设备(IGFCI)的方法和技术,该智能GFCI设备具有被编程为定期执行自测试的微控制器,并将该测试的结果传送到诸如远程中央记录计算机的远程监控设备。 在一些实现中,通过双向(双向)通信,可以从远程设备系统地测试和复位多个自检IGFCI设备,以减少对用户的干扰。 IGFCI设备可以配置为在将AC电源应用于设备时自动复位或手动复位。

    Combination device including a guide light and an electrical component
    10.
    发明授权
    Combination device including a guide light and an electrical component 有权
    组合装置,包括引导灯和电气部件

    公开(公告)号:US07862350B2

    公开(公告)日:2011-01-04

    申请号:US11841624

    申请日:2007-08-20

    IPC分类号: H01R13/648

    摘要: There is disclosed a combination electrical device comprising a housing wherein there can be at least one light and at least one sensor disposed in the housing. The light serves as a guide light wherein the sensor is for determining the presence or absence of light. Inside the housing can be face terminals which extend up to a user accessible interface in the form of apertures for receiving prongs of a plug. The housing can include an additional housing for receiving a circuit board coupled to the light and the sensor. In addition, there can be a translucent cover for covering the light and the sensor. In at least one embodiment, the translucent cover can extend along at least one fourth of a length of a front face of the housing. In another embodiment, the translucent cover can extend along at least one third of a length of a front face of the housing. In still another embodiment, the translucent cover can extend along one half of a length of the housing.

    摘要翻译: 公开了一种组合电气装置,其包括壳体,其中可以存在设置在壳体中的至少一个光和至少一个传感器。 光用作引导光,其中传感器用于确定光的存在或不存在。 在壳体内部可以是面向终端,其以用于接收插头的插脚的孔的形式延伸到用户可访问的接口。 壳体可以包括用于接收耦合到光和传感器的电路板的附加壳体。 此外,可以有一个半透明的盖子来覆盖光线和传感器。 在至少一个实施例中,半透明盖可以沿壳体前表面的至少四分之一长度延伸。 在另一个实施例中,半透明盖可以沿壳体前表面的至少三分之一长度延伸。 在另一个实施例中,半透明盖可以沿壳体的一半长度延伸。