| 摘要 |
An improved gas-type circuit-interrupter is provided having a pair of separable contacts, which establish an arc upon separation within a confined casing having a nozzle structure. The arrangement is such that during the initial portion of the opening operation of the interrupter, the established arc generates gas pressure, due to the hot arc energy developed in the arc, and this high-pressure gas is then stored within an adjacently-provided gas-storage region. At a later point in time in the opening operation, when, preferably, the current flow through the interrupter approaches its low instantaneous-current value, the aforesaid accumulated gas pressure, contained within said gas-storage region, returns in a gas flow to the arc, and effects the extinction thereof during such low instantaneous values of arcing current.
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