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    Electrical switching apparatus with digital trip unit and memory reset
    3.
    发明授权
    Electrical switching apparatus with digital trip unit and memory reset 失效
    具有数字跳闸单元和存储器复位的电气开关设备

    公开(公告)号：US5331501A

    公开(公告)日：1994-07-19

    申请号：US954913

    申请日：1992-09-30

    申请人： Alan B. Shimp

    发明人： Alan B. Shimp

    IPC分类号： H01H71/36 ,  H01H71/44 ,  H01H73/00 ,  H01H73/12 ,  H01H83/02 ,  H02H3/00 ,  H02H3/04 ,  H02H3/093 ,  H02H3/08

    CPC分类号： H02H3/044 ,  H02H3/093 ,  H02H3/006

    摘要： A microprocessor based switch such as a circuit breaker has a memory capacitor charged by the microprocessor to generate an analog equivalent of a digitally modelled heat state signal. A selected resistor discharges the capacitor at a rate which models a cooling rate of a load. Alternatively, the memory capacitor may be charged to a preset value and discharged at a rate representative of the time since a trip generates digital rms representations of analog load. Terminals for rapidly resetting the analog trip memory for calibration and field testing of a long delay trip are hidden behind a removable rating plug.

    摘要翻译： 诸如断路器的基于微处理器的开关具有由微处理器充电的存储器电容器，以产生数字建模的热状态信号的模拟等效物。 选定的电阻器以对负载的冷却速率进行建模的速率放电电容器。 或者，可以将存储电容器充电到预设值，并以代表时间的速率放电，这是由于跳闸产生模拟负载的数字有效值表示。 用于快速复位模拟跳闸存储器的端子用于长时间延迟跳闸的校准和现场测试隐藏在可拆卸的额定插头后面。

    METHOD AND APPARATUS FOR CONTROLLING A CIRCUIT BREAKER IN AN ELECTRICAL ENERGY SUPPLY NETWORK
    6.
    发明申请
    METHOD AND APPARATUS FOR CONTROLLING A CIRCUIT BREAKER IN AN ELECTRICAL ENERGY SUPPLY NETWORK 审中-公开

    公开(公告)号：US20180082816A1

    公开(公告)日：2018-03-22

    申请号：US15697657

    申请日：2017-09-07

    申请人： SIEMENS AKTIENGESELLSCHAFT

    发明人： HANS-JOACHIM HERRMANN

    IPC分类号： H01H71/12 ,  H01H71/10 ,  H01H71/70 ,  H01H71/48 ,  H01H71/36

    摘要： A method and an apparatus for controlling a circuit breaker in an electrical energy supply network. A switching signal is generated by a protective or control device of the energy supply network and the switching signal is transmitted to a control unit of the circuit breaker. The control unit is caused to open the switching contacts of the circuit breaker upon reception of the switching signal. In order to ensure a switching operation which is as fast as possible even in those energy supply networks in which phases of the current to be switched by a circuit breaker which are free of zero crossings can occur, a current flowing through the circuit breaker is recorded and is checked for the occurrence of zero crossings. The transmission of the signal for opening the switching contacts is prevented until at least one zero crossing has been detected.

    Residential circuit breaker with arcing fault detection
    7.
    发明授权
    Residential circuit breaker with arcing fault detection 失效
    具有电弧故障检测的住宅断路器

    公开(公告)号：US5706154A

    公开(公告)日：1998-01-06

    申请号：US726895

    申请日：1996-10-04

    申请人： Raymond K. Seymour

    发明人： Raymond K. Seymour

    IPC分类号： H01H71/36 ,  H01H71/40 ,  H02H1/00 ,  H02H3/00

    CPC分类号： H01H71/40 ,  H01H71/36 ,  H01H2071/407 ,  H01H2083/201 ,  H02H1/0015

    摘要： A circuit breaker thermal-magnetic trip unit for arcing fault detection includes a current transformer having a gapped magnetic core arranged around the load side of the trip unit. The bimetal within the trip unit is positioned abutment with the gap in the transformer core to thereby heat the bimetal causing the bimetal to trip and separate the circuit breaker contacts.

    摘要翻译： 用于电弧故障检测的断路器热磁跳闸单元包括电流互感器，其具有围绕跳闸单元的负载侧布置的间隙磁芯。 跳闸单元内的双金属定位成与变压器芯中的间隙邻接，从而加热双金属片，从而使双金属片跳闸并分离断路器触点。