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5 records (took 0.022 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE19702094B4

    公开(公告)日：2008-01-24

    申请号：DE19702094

    申请日：1997-01-22

    Applicant: ABB RESEARCH LTD

    Inventor： DULLNI EDGAR ,  GLATZ-REICHENBACH JOACHIM ,  KUHLEFELT JAN ,  LOITZL RUZICA ,  PELANEK ZDENEK ,  SKINDHOEJ JOERGEN ,  STRUEMPLER RALPH

    IPC: H01H33/16 ,  H02H3/02 ,  H02H3/08 ,  H02H9/02

    Abstract: A power switching apparatus is disclosed which has an electrical conductor to which high voltage can be applied. A series of circuits formed by a switching point and a current-limiting element which contains PTC thermistors and varistors is arranged in the cable run of the electrical conductor. An apparatus for operating the switching point interacts with the current-limiting element. The current-limiting element has n (where n is a natural number greater than 1) series-connected parallel circuits each having at least one PTC thermistor and at least one varistor connected in parallel with it. A current sensor arranged in the cable run of the electrical conductor or those connections of one of the PTC thermistors and of the varistor connected in parallel with it which are interconnected at two junction points in one of the parallel circuits are operatively connected to the input of the operating apparatus. Such a power switching apparatus is designed using economic components, such as PTC thermistors and varistors for low-voltage applications, and a switching device which is designed for switching only low currents and can effectively limit large and small short-circuit currents without the current-limiting element connected upstream of the switching device, and/or the switching device, being overloaded.

    Circuit breaker
    2.
    发明专利
    Circuit breaker 未知

    公开(公告)号：DE19702094A1

    公开(公告)日：1998-07-23

    申请号：DE19702094

    申请日：1997-01-22

    Applicant: ABB RESEARCH LTD

    Inventor： DULLNI EDGAR DR ,  GLATZ-REICHENBACH JOACHIM DR ,  KUHLEFELT JAN ,  LOITZL RUZICA ,  PELANEK ZDENEK ,  SKINDHOEJ JOERGEN DR ,  STRUEMPLER RALPH DR

    IPC: H01H33/16 ,  H02H3/02 ,  H01C1/16

    Abstract: The circuit breaker device (L) has at least one current conductor to which a high voltage is applied. A series circuit is arranged in the path of the current conductor. The series circuit includes a switch point and a current limiting element including at least one PTC resistor and at least one parallel connected varistor. A device for operating the switch point cooperates with the current limiting element. The current limiting element has n parallel circuits connected in series. Each parallel circuit has at least one PTC resistor and at least one varistor connected in parallel. n is a natural number greater than 1. A current sensor acting on an input of the switch actuator is arranged in the current path of the current conductor.

    3.
    发明专利
    未知

    公开(公告)号：DE59712291D1

    公开(公告)日：2005-06-09

    申请号：DE59712291

    申请日：1997-03-03

    Applicant: ABB RESEARCH LTD

    Inventor： GLATZ-REICHENBACH DR ,  GREUTER DR ,  MAUTHE GERHARD ,  PELANEK ZDENEK ,  SCHUELER DR ,  SKINDHOJ DR ,  STRUEMPLER DR

    IPC: H01C1/14 ,  H01C7/02 ,  H01C7/12 ,  H01C7/13 ,  H01C13/02

    Abstract: The resistance has a pair of parallel terminal electrodes (1,2) in flat contact with a resistance body (3) which has a positive temperature coefficient characteristic. A varistor (40) lies in electrical contact with the resistance body which has 2 contact surfaces (50,51). The response point (60) of the resistance body is connected in parallel with the varistor through the surfaces. A number of series connected varistors (41,42,43,44) may contact respective meanders of a zigzag resistance body between the parallel terminal electrodes via respective contact surfaces (52,53).

    Strombegrenzender Widerstand mit PTC-Verhalten
    5.
    发明公开
    Strombegrenzender Widerstand mit PTC-Verhalten 失效

    公开(公告)号：EP0798750A3

    公开(公告)日：1998-12-02

    申请号：EP97810116

    申请日：1997-03-03

    Applicant: ABB RESEARCH LTD

    Inventor： GLATZ-REICHENBACH DR ,  GREUTER FELIX DR ,  MAUTHE GERHARD ,  PELANEK ZDENEK ,  SCHUELER CLAUS DR ,  SKINDHOJ JORGEN DR ,  STRUEMPLER RALF DR

    IPC: H01C1/14 ,  H01C7/02 ,  H01C7/12 ,  H01C7/13 ,  H01C13/02

    CPC classification number: H01C7/13 ,  H01C1/1406 ,  H01C7/027 ,  H01C7/12 ,  H01C13/02

    Abstract: Der strombegrenzender Widerstand weist zwei parallel zueinander angeordneten Anschlusselektroden (1, 2) auf sowie einen mit den Anschlusselektroden (1, 2) flächenhaft kontaktierten und PTC-Verhalten aufweisenden Widerstandskörper (3). Mit dem Widerstandskörper (3) in elektrisch leitendem Kontakt befindet sich ein Varistor (40). Der Widerstandskörper (3) enthält zwei Kontaktflächen (50, 51) sowie eine Ansprechstelle (60), welche über beiden Kontaktflächen (50, 51) parallel zum Varistor (40) geschaltet ist und oberhalb eines Schwellwertes eines durch den Widerstand fliessenden Stroms einen PTC-Übergang ausführt.
    Da bei diesem Widerstand der Widerstandskörper den elektrischen Kontakt zum Varistor (40) bewirkt, werden für den Varistor keine metallenen Anschlusselektroden benötigt. Zugleich wird durch die Verlagerung der Ansprechstelle (60) von Varistor (40) weg nach aussen die Betriebssicherheit des Widerstands erheblich verbessert.
    Durch eine Reihenschaltung mehrerer in einem mäanderförmig oder anderweitig kontinuierlich ausgebildeten Widerstandskörper (3) vorgesehener Varistoren (40, 41, ..) kann eine wirkungsvolle Strombegrenzung in Lastkreisen erreicht werden, welche mit hoher Spannung betrieben werden.

    Abstract translation: 该电阻具有与具有正温度系数特性的电阻体（3）平坦接触的一对平行端子电极（1,2）。 变阻器（40）与具有2个接触表面（50,51）的电阻体电接触。 电阻体的响应点（60）通过表面与压敏电阻并联连接。 多个串联连接的压敏电阻（41,42,43,44）可以通过相应的接触表面（52,53）与平行端子电极之间的锯齿形电阻体的相应曲折接触。

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