| 摘要 |
A high-voltage circuit-interrupter has a contact arrangement operating in compressed gas contained in a sealed vessel. The contact arrangement comprises a pair of spaced aligned tubular fixed contacts respectively connected to the terminals of the interrupter, and a pair of separable rooting electrodes mounted within the tubular fixed contacts and electrically connected respectively to them. A tubular bridging contact sleeve is slidably mounted on the tubular bridging contacts and is movable between a closed position bridging the spaced ends of the tubular contacts and an open position withdrawn from one of them to open a gap therebetween. The circuit-interrupter operating mechanism is arranged, for opening the interrupter, to withdraw the bridging contact sleeve from one of the fixed contacts and to initiate a gas blast through the gap so opened into the interiors of the fixed contacts and simultaneously or subsequently to withdraw one of the rooting electrodes from the other, so that the arc drawn between the bridging contact sleeve and one tubular fixed contact is transferred to the separated rooting electrodes and is then extinguished.
|
