| 摘要 |
A switching chamber is intended for a gas-insulated high-voltage switch and contains a contact arrangement with two arcing contacts, which move relative to one another along an axis, with an insulating nozzle, an insulating auxiliary nozzle, a heating volume and a heating channel. The heating channel is routed partially axially between the insulating nozzle and the insulating auxiliary nozzle and connects an arcing zone to the heating volume. A section of the heating channel which opens into the heating volume is inclined inward with respect to the axis. Hot gas which is formed when a short-circuit current is disconnected in the arcing zone therefore flows with a velocity component directed inward into the heating volume, and can penetrate deeply into the heating volume in areas close to the axis. The quality of a quenching gas which is formed in the heating volume from the hot gas and cold gas which is already present, with this quenching gas being used to blow a switching arc which has been struck in the arcing zone during disconnection, can thus be improved.
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