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    Tester for a plurality of circuit breakers having a range of rated currents and multiple trip functions
    1.
    发明授权
    Tester for a plurality of circuit breakers having a range of rated currents and multiple trip functions 有权
    用于具有额定电流范围和多次跳闸功能的多个断路器的测试仪

    公开(公告)号：US06744260B2

    公开(公告)日：2004-06-01

    申请号：US10196832

    申请日：2002-07-17

    申请人： Steven C. Schmalz ,  Michael F. Walz ,  James M. McCormick

    发明人： Steven C. Schmalz ,  Michael F. Walz ,  James M. McCormick

    IPC分类号： H01H3102

    CPC分类号： H02H3/044 ,  G01R31/3277 ,  H02H1/0015

    摘要： A tester for in situ testing of a plurality of circuit breakers having a range of rated currents and multiple trip functions, includes a plurality of power resistors of known impedance, an electronic switch associated with each power resistor connecting the resistor in series with the load terminal of the circuit breaker under test, and a controller that turns on a number of the switches selected to collectively draw through the associated power resistors a test current that is a function of the rated current and sufficient to trip the circuit breaker within a selected time window. Turn on of the electronic switches is also controlled to generate a current waveform appropriate for the trip function being tested. In a self test mode, the value of each of the power resistors is verified as being within limits.

    摘要翻译： 一种用于对具有额定电流和多次跳闸功能范围的多个断路器进行原位测试的测试器包括已知阻抗的多个功率电阻器，与每个功率电阻器相关联的电子开关，其将该电阻器与负载端子串联连接 的控制器，以及控制器，其接通选择的多个开关，以共同地通过相关联的功率电阻器测试电流，该测试电流是额定电流的函数，并足以使断路器在选定的时间窗内跳闸 。 电子开关的开启也被控制以产生适合于被测试的跳闸功能的电流波形。 在自检模式下，每个功率电阻的值被验证为在限制范围内。

    Apparatus for detecting coil failure in an actuating solenoid of an electrical power switch
    2.
    发明授权
    Apparatus for detecting coil failure in an actuating solenoid of an electrical power switch 有权
    用于检测电力开关的致动螺线管中的线圈故障的装置

    公开(公告)号：US07035067B2

    公开(公告)日：2006-04-25

    申请号：US10409256

    申请日：2003-04-08

    申请人： Steven C. Schmalz ,  Michael F. Walz

    发明人： Steven C. Schmalz ,  Michael F. Walz

    IPC分类号： H02H9/08

    CPC分类号： H02H3/04 ,  G01R31/327 ,  H02H5/10

    摘要： The continuity of the coil of the actuating solenoid of an electric power switch is detected through utilization of a signaling device, such as a light emitting diode (LED) that monitors energization of a dc power supply fed from the source side of the coil. A circuit energized from the other side of the coil generates a dc voltage V2 that is applied to the gate electrode of an electronic switch shunting the LED. The voltage V2 is greater than the dc supply voltage to bias the electronic switch off so that the LED is illuminated when there is continuity through the coil. If the coil fails, V2 will be zero and the electronic switch is turned on to short circuit the LED to signal the failure of the coil.

    摘要翻译： 电力开关的驱动电磁线圈的线圈的连续性通过利用信号装置来检测，诸如发光二极管（LED）的信号装置，该发光二极管监测从线圈的源极侧馈送的直流电源的通电。 从线圈的另一侧通电的电路产生施加到分流LED的电子开关的栅电极的直流电压V 2。 电压V 2大于直流电源电压以偏置电子开关，使得当通过线圈有连续性时，LED被点亮。 如果线圈失效，V 2将为零，并且电子开关导通以使LED短路以表示线圈的故障。

    Shape memory alloy trip mechanism for arc/ground fault circuit interruption
    4.
    发明授权
    Shape memory alloy trip mechanism for arc/ground fault circuit interruption 有权
    形状记忆合金跳闸机构，用于电弧/接地故障电路中断

    公开(公告)号：US07064636B1

    公开(公告)日：2006-06-20

    申请号：US11016950

    申请日：2004-12-20

    申请人： Michael F. Walz ,  Patrick W. Mills ,  Richard G. Benshoff ,  Peter L. Nerstrom

    发明人： Michael F. Walz ,  Patrick W. Mills ,  Richard G. Benshoff ,  Peter L. Nerstrom

    IPC分类号： H01H83/06

    CPC分类号： H01H83/20 ,  H01H73/30 ,  H01H2083/201

    摘要： A miniature circuit breaker comprising a non-conductive housing assembly; a pair of separable contacts including a first, fixed contact coupled to said housing assembly and having a terminal extending outside said housing assembly, and a second, movable contact having a terminal extending outside said housing assembly; an operating mechanism coupled to, and structured to move, said movable contact between a first position, wherein said movable contact engages said fixed contact, and a second position, wherein said movable contact is spaced from said fixed contact; a trip device coupled to said operating mechanism and structured to actuate said operating mechanism to separate said separable contacts upon the occurrence of a trip condition; an arc fault trip mechanism having an arc fault detector and a shape memory alloy element; said arc fault detector structured to detect an arc fault on the load side of said separable contacts and to provide an electrical pulse; said shape memory alloy element structured to transform between a first shape and a second shape during the application of an electrical pulse, said shape memory alloy element having a first end and a second end, said shape memory alloy element first end coupled to said housing assembly, said shape memory alloy element coupled to said trip device; said arc fault detector further coupled to said shape memory alloy element and structured to provide an electrical pulse to said shape memory alloy element sufficient to transform said shape memory alloy element from said first shape and said second shape; and wherein when said shape memory alloy element is in said second shape, said trip device is actuated and said operating mechanism separates said separable contacts.

    摘要翻译： 一种包括非导电壳体组件的微型断路器; 一对可分离触点，包括耦合到所述壳体组件的第一固定触点，并且具有延伸到所述壳体组件外部的端子;以及第二可移动触点，其具有延伸到所述壳体组件外部的端子; 操作机构，其联接到第一位置并且构造成在所述可动触头与所述固定触点接合的第一位置和第二位置之间联接并构造成移动所述可动触头，其中所述可动触头与所述固定触点间隔开; 耦合到所述操作机构并被构造成致动所述操作机构以在发生跳闸状态时分离所述可分离触点的跳闸装置; 具有电弧故障检测器和形状记忆合金元件的电弧故障跳闸机构; 所述电弧故障检测器被构造成检测所述可分离触点的负载侧上的电弧故障并提供电脉冲; 所述形状记忆合金元件构造成在施加电脉冲期间在第一形状和第二形状之间转变，所述形状记忆合金元件具有第一端和第二端，所述形状记忆合金元件第一端联接到所述壳体组件 ，所述形状记忆合金元件耦合到所述跳闸装置; 所述电弧故障检测器还耦合到所述形状记忆合金元件并且被构造为向所述形状记忆合金元件提供足以将所述形状记忆合金元件从所述第一形状和所述第二形状变换的电脉冲; 并且其中当所述形状记忆合金元件处于所述第二形状时，所述跳闸装置被致动，并且所述操作机构分离所述可分离触点。