GAS CIRCUIT BREAKER

摘要

The gas circuit breaker includes a sealed container filled with an arc-extinguishing gas, a pair of fixed arc electrodes arranged in the sealed container to be opposite to each other, a trigger electrode movably arranged between the fixed arc electrodes and generating an arc discharge according to movement, a pressurization chamber pressuring and increasing a pressure of the arc-extinguishing gas with pressurization means, and a pressure accumulation chamber in communication with the pressurization chamber and accumulating the pressurized arc-extinguishing gas. The trigger electrode switches the pressure accumulation chamber into a closed state or an open state. The pressure accumulation chamber is switched to the closed state in a first half of breaking of the electric current, and the pressure accumulation chamber is switched to the open state in a latter half of breaking of the electric current. The arc-extinguishing gas in the pressure accumulation chamber is guided to the arc discharge.

主权项

1. A gas circuit breaker for switching breaking and turning-on of an electric current, comprising:
a sealed container filled with an arc-extinguishing gas; a pair of fixed arc electrodes arranged in said sealed container to be opposite to each other; a trigger electrode movably arranged between said fixed arc electrodes and generating an arc discharge according to movement; a pressurization unit pressuring and increasing a pressure of said arc-extinguishing gas with pressurization means; and a pressure accumulation unit in communication with said pressurization unit and accumulating said pressurized arc-extinguishing gas, wherein said trigger electrode is an open and close means for switching said pressure accumulation unit into a closed state or an open state, and said pressure accumulation unit is switched to said closed state in a first half of breaking of said electric current, and said pressure accumulation unit is switched to said open state in a latter half of breaking of said electric current, so that said arc-extinguishing gas in said pressure accumulation unit is guided to said arc discharge.