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    HOCHLEISTUNGSSCHALTER MIT ABBRANDFESTER KURZSCHLUSSTROMFÜHRUNG
    1.
    发明公开
    HOCHLEISTUNGSSCHALTER MIT ABBRANDFESTER KURZSCHLUSSTROMFÜHRUNG 有权
    HOCHLEISTUNGSSCHALTER MIT ABBRANDFESTER KURZSCHLUSSTROMFHHUNG

    公开(公告)号：EP1831906A1

    公开(公告)日：2007-09-12

    申请号：EP05812736.6

    申请日：2005-12-14

    申请人： ABB Technology AG

    发明人： SAXL, David ,  VESTNER, Markus ,  NORDSTROEM, Thomas ,  BORG, Tomas ,  STROM, Tomas

    IPC分类号： H01H33/70

    CPC分类号： H01H33/7023 ,  H01H33/7015 ,  H01H33/7061 ,  H01H33/7076

    摘要： Disclosed is a heavy-duty circuit breaker comprising an axis (A) by means of which an axial coordinate (z) that runs parallel to said axis and a radial coordinate (r) which extends perpendicular thereto are defined, an arcing contact piece (1), a current conducting element (2), and an arc-resistant element (3a). The arcing contact piece (1) is provided with a hole (6) for directing a substantially axial flow (4) of a gas (4) that is heated by an arc (5) which is based on the arcing contact piece (1) if applicable. Additionally, the arcing contact piece (1) forms a planar contact (F) along with the current conducting element (2) in order to conduct a fault current (I) that flows through the arcing contact piece (1) and the current conducting element (2) during the time the arc (5) burns. The current conducting element (2) is essentially shielded from the flow (4) near the planar contact (F) with the aid of the arc-resistant element (3a). The inventive heavy-duty circuit breaker is characterized in that the current conducting element (2) is provided with an axial area (2a) in which a radial inner dimension (d2) of the current conducting element increases step by step or continuously as the distance from the planar contact (F) increases parallel to the axis (A). The axial area (2a) is advantageously provided for accommodating the arc-resistant element (3a).

    摘要翻译： 本发明公开了一种重载断路器，其包括轴线（A），通过该轴线定义平行于所述轴线的轴向坐标（z）和与其垂直延伸的径向坐标（r），电弧接触件（1 ），导电元件（2）和抗电弧元件（3a）。 电弧接触件（1）设有用于引导由基于电弧接触件（1）的电弧（5）加热的气体（4）的基本上轴向的流动（4）的孔（6） 如果适用。 此外，电弧接触件（1）与电流传导元件（2）一起形成平面接触件（F），以便传导流过电弧接触件（1）的故障电流（I）和电流传导元件 （2）在电弧（5）燃烧期间。 借助于抗电弧元件（3a），电流传导元件（2）基本上与靠近平面触点（F）的流体（4）屏蔽。 本发明的重载断路器的特征在于，电流传导元件（2）设置有轴向区域（2a），其中，电流传导元件的径向内部尺寸（d2）逐步地或连续地增加 从平面接触（F）平行于轴线（A）增加。 轴向区域（2a）有利地设置用于容纳抗电弧元件（3a）。