| 摘要 |
The present invention relates to a gas-insulated high-voltage circuit breaker (1), comprising arcing contacts (11, 21) and a nozzle (30) providing a channel (32) for gas flow and arc extinction, and further having an obstructing member (90) being movable within the channel (32) relative to one of the contacts (21) and to the nozzle (30) for varying the gas outflow cross section as a function of the position of the obstructing member (90) in such a way that an improved gas pressurizing configuration (301) or gas pressurizing phase and a subsequent gas clearing configuration (302) or gas clearing phase are realized.
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