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36 条记录 (耗时 0.043 秒)

    Method of determining contact wear in a trip unit
    4.
    发明授权
    Method of determining contact wear in a trip unit 有权
    确定跳闸单元中接触磨损的方法

    公开(公告)号：US06466023B2

    公开(公告)日：2002-10-15

    申请号：US09778698

    申请日：2001-02-07

    申请人： John J. Dougherty ,  Bo L. Andersen

    发明人： John J. Dougherty ,  Bo L. Andersen

    IPC分类号： G01R3102

    CPC分类号： H01H1/0015 ,  H01H71/123 ,  H01H71/125 ,  H01H2011/0068

    摘要： A method of determining contact wear in a trip unit of a circuit breaker and a circuit breaker employing such a method are presented. The trip unit includes a microcontroller and associated memories. An algorithm (program) stored in a memory of the trip unit calculates cumulative energy dissipated in the breaker contacts using the current signal detected at the time of separation. Measurement of cumulative energy dissipated in the breaker contacts is proportional to contact wear. Maintenance setpoints are determined based on industry standard endurance tests and alarm threshold and trip thresholds further based on industry standards are provided within the algorithm for notifying local or remote personnel of a necessary maintenance procedure.

    摘要翻译： 介绍了一种确定断路器跳闸单元和采用这种方法的断路器的接触磨损的方法。 跳闸单元包括微控制器和相关联的存储器。 存储在跳闸单元的存储器中的算法（程序）使用在分离时检测到的当前信号来计算在断路器触点中消耗的累积能量。 断路器触点中消耗的累积能量的测量与接触磨损成比例。 维护设定值是根据行业标准耐久性测试确定的，并且在算法内提供进一步基于行业标准的报警阈值和跳闸阈值，以通知本地或远程人员必要的维护程序。

    Molded case circuit breaker-process loop unit
    5.
    发明授权
    Molded case circuit breaker-process loop unit 失效
    塑壳断路器 - 工艺回路单元

    公开(公告)号：US5295037A

    公开(公告)日：1994-03-15

    申请号：US826505

    申请日：1992-01-27

    申请人： John J. Dougherty

    发明人： John J. Dougherty

    IPC分类号： H01H71/12 ,  H01H71/74 ,  H02H3/10 ,  H02H3/24

    CPC分类号： H01H71/123 ,  H02H3/10 ,  H01H71/7409

    摘要： An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the integrated protection unit cover from the environment. A combined overcurrent trip actuator and accessory unit is either field-installed or factory-installed within the integrated protection unit. One such actuator-accessory responds to a process current loop signal upon command to interrupt circuit current to associated electrical equipment.

    摘要翻译： 集成保护单元是一种断路器，包括基本的过流保护设备以及选择性的电气附件。 固定到集成保护单元盖的模制塑料附件通道盖保护集成保护单元盖中包含的附件​​部件免受环境影响。 组合的过电流跳闸执行器和附件单元在现场安装或出厂安装在集成保护单元内。 一个这样的致动器附件响应于根据命令将电流中断到相关联的电气设备的过程电流回路信号。

    Protection circuit for multiple phase power system
    6.
    发明授权
    Protection circuit for multiple phase power system 失效
    多相电力系统保护电路

    公开(公告)号：US5243489A

    公开(公告)日：1993-09-07

    申请号：US912437

    申请日：1992-08-21

    申请人： John J. Dougherty

    发明人： John J. Dougherty

    IPC分类号： H02H3/253

    CPC分类号： H02H3/253

    摘要： A protection circuit for three-phase power systems incorporates overcurrent protection along with phase loss and phase imbalance by means of common current sensing transformers. The phase loss and phase imbalance are determined by a pairwise comparison algorithm.

    摘要翻译： 用于三相电力系统的保护电路通过公共电流检测变压器包含过电流保护以及相位损失和相位不平衡。 相位失衡和相位不平衡由成对比较算法确定。

    Pile joiner for connecting the ends of concrete piles and its members
    7.
    发明授权
    Pile joiner for connecting the ends of concrete piles and its members 失效
    用于连接混凝土桩及其构件端部的桩连接器

    公开(公告)号：US3988899A

    公开(公告)日：1976-11-02

    申请号：US592189

    申请日：1975-07-01

    申请人： John J. Dougherty

    发明人： John J. Dougherty

    IPC分类号： E02D5/52 ,  E02D5/30 ,  B25G3/00

    CPC分类号： E02D5/523 ,  Y10T403/7088

    摘要： A pile joiner is disclosed for connecting together the ends of concrete piles which joiner includes a socket member and a mating member one of which is on the end of one pile and the other is on the end of the pile to be connected therewith. Each of these two members has a base plate with a central hole therethrough and a tubular element secured to each base plate and extending at right angles thereto. One tubular element is a socket element and the other is a mating element which is received within the socket element. The socket element and the mating element have at least a first sleeve means which includes a sleeve hole or holes through a wall or walls of each element and in alignment when the members are assembled together, an outer sleeve for each sleeve hole of the socket element extending outwardly and an inner sleeve for the sleeve hole or holes of the mating element extending inwardly or between sleeve holes in opposite walls thereof. When the two members are assembled together with their base plates in contact, the first sleeve means of each member or element are in alignment and receive a lock bar to retain the two members and their piles together against separation. Preferably the tubular socket element and the tubular mating element have a second sleeve means similar to the first which are in alignment when the two members are assembled together and preferably angularly located with respect to the first sleeve means. A second lock bar is received therein to additionally secure the the two members and the ends of the piles together. The pile joiner is constructed so that it is suitable for piles of different forms in cross section and for a wide range of sizes of piles. The invention includes each member individually as well as the members in combination as a pile joiner.

    摘要翻译： 公开了一种用于将混凝土桩的端部连接在一起的桩接头，所述混凝土桩的端部包括插座构件和配合构件，其中一个位于一个桩的一端，另一个位于待连接的桩的端部上。 这两个构件中的每一个具有穿过其中心孔的基板和固定到每个基板并与其成直角延伸的管状元件。 一个管状元件是插座元件，另一个是接纳在插座元件内的配合元件。 插座元件和配合元件至少具有第一套筒装置，其包括穿过每个元件的壁或壁的套筒孔或孔，当构件组装在一起时对齐，用于插座元件的每个套筒孔的外套筒 向外延伸，并且用于套筒孔的内套筒或配合元件的孔向内或在其相对壁中的套筒孔之间延伸。 当两个构件与其基板接触地组装在一起时，每个构件或元件的第一套筒装置对准并且接收锁定杆，以将两个构件和它们的桩保持在一起而不会分离。 优选地，管状插座元件和管状配合元件具有类似于第一套筒装置的第二套筒装置，当第一套筒装置组装在一起并优选地相对于第一套筒装置成角度地定位时，第二套筒装置对齐。 第二锁杆被容纳在其中以另外将两个构件和桩的端部固定在一起。 堆垛机的构造使其适用于横截面不同形式的桩和各种尺寸的桩。 本发明独立地包括每个构件以及作为桩接头组合的构件。

    ELECTRONIC TRIP UNIT FOR CIRCUIT BREAKERS
    8.
    发明申请
    ELECTRONIC TRIP UNIT FOR CIRCUIT BREAKERS 有权
    用于断路器的电子牵引单元

    公开(公告)号：US20080180196A1

    公开(公告)日：2008-07-31

    申请号：US12059674

    申请日：2008-03-31

    申请人： Nataniel Barbosa Vicente ,  John J. Dougherty ,  Michael S. Tignor

    发明人： Nataniel Barbosa Vicente ,  John J. Dougherty ,  Michael S. Tignor

    IPC分类号： H01H81/02 ,  H01H83/00

    CPC分类号： H02H3/08

    摘要： An electronic trip unit for a circuit breaker is disclosed. The electronic trip unit has a processing circuit, and a real time clock circuit that is operational in the absence of current in the circuit breaker. The processing circuit is responsive to input signals representative of a current in the circuit breaker, and the real time clock circuit is in signal communication with the processing circuit. In response to an off event at the circuit breaker following a current flow condition thereat, the real time clock circuit is configured to generate time information relating to the circuit breaker being off as a result of the off event for use by the processing circuit.

    摘要翻译： 公开了一种用于断路器的电子跳闸单元。 电子跳闸单元具有处理电路和在断路器中没有电流时可操作的实时时钟电路。 处理电路响应代表断路器中的电流的输入信号，并且实时时钟电路与处理电路进行信号通信。 响应于在电流流动条件下的断路器处的断开事件，实时时钟电路被配置为作为由处理电路使用的断开事件的结果而关断断路器的时间信息。

    Arcing fault detection module
    10.
    发明授权
    Arcing fault detection module 失效
    电弧故障检测模块

    公开(公告)号：US6002561A

    公开(公告)日：1999-12-14

    申请号：US6796

    申请日：1998-01-14

    申请人： John J. Dougherty

    发明人： John J. Dougherty

    IPC分类号： H02H1/00 ,  H02H3/52 ,  H02H3/00

    CPC分类号： H02H1/0015 ,  H02H3/52

    摘要： An arcing fault detection module (4) for detecting arcing faults in an electrical current distribution circuit (8) comprises a filter circuit (9) and an autocorrelation circuit (10). The filter circuit (9) is electrically connected to the distribution circuit (8) and samples current with the distribution circuit. The filter circuit (9) includes a band pass filter (12) to filter out fundamental and high frequency components from the sampled current, and a comparator (13) to convert the sampled current to a digital signal. The autocorrelation circuit (10) receives the digital signal from the filter circuit (9). The autocorrelation circuit (10) includes a plurality of shift registers (15-18) for storing the digital signal for a predetermined sample period, and a plurality of EXCLUSIVE-OR gates (35-37,41, 43, 44) and OR gates (38, 39) to detect odd and even harmonic signals. An integrator-counter (47) electrically connects to certain EXCLUSIVE-OR and OR gates, and provides an arc indicative signal when the absolute value of the even and odd harmonic signals is equal to a predetermined number.

    摘要翻译： 一种用于检测电流分配电路（8）中的电弧故障的电弧故障检测模块（4）包括滤波电路（9）和自相关电路（10）。 滤波器电路（9）与分配电路（8）电连接，并与分配电路进行采样。 滤波器电路（9）包括滤波器（12），用于从采样电流滤除基频和高频分量;以及比较器（13），用于将采样的电流转换成数字信号。 自相关电路（10）从滤波电路（9）接收数字信号。 自相关电路（10）包括用于存储预定采样周期的数字信号的多个移位寄存器（15-18）和多个异或门（35-37,41,43,44）和OR门 （38,39）来检测奇偶谐波信号。 积分器计数器（47）电连接到某些“异或”和“或”门，并且当奇偶谐波信号的绝对值等于预定数量时，提供电弧指示信号。