发明名称 |
PERFECCIONAMIENTOS EN UN DISYUNTOR DE GAS COMPRIMIDO |
摘要 |
<p>A gas-blast switch, preferably suitable for switching high voltages, has two arc contacts which can be moved relatively to each other along an axis. Also included are a heating volume and a compression volume concentrically formed around the axis. Quenching gas is compressed in the compression volume by means of a compression slider. As soon as the gas pressure is sufficiently high, a part of the quenching gas flows via a back-pressure valve into the heating volume and there assists in blasting an arc drawn between the arc contacts during a switching-off process. The assist is needed primarily when only small currents are involved in which case only comparatively low quenching gas pressure is developed in the heating volume. The switching-off capacity of the gas-blast switch is increased with simultaneous reduction in the needed actuating energy. This is achieved in that the arc contact of a moving contact member has a discharge duct which extends in axial direction from a free end facing a fixed contact member to another end which opens into the expansion. volume. Between the compression volume and the expansion volume a device is provided for controlling the pressure and for refilling the quenching gas located in the compression volume.</p> |
申请公布号 |
ES547296(D0) |
申请公布日期 |
1986.12.16 |
申请号 |
ES19960005472 |
申请日期 |
1985.09.25 |
申请人 |
BBC AKTIENGESELLSCHAFT BROWN, BOVERI & CIE |
发明人 |
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分类号 |
H01H33/90;H01H33/915;H01H33/985;(IPC1-7):H01H33/22 |
主分类号 |
H01H33/90 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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