Current interrupter chamber for power circuit breaker, has compression chamber communicating with other compression chamber and injecting dielectric gas into latter chamber when pressure in latter chamber is less than that in former chamber

摘要

Chamber (1) has a mobile assembly (10) axially moving between starting and final positions of operation of opening a circuit-breaker. The assembly has a compression chamber (5) whose volume diminishes between the starting position and an open position of the chamber (5). A compression chamber (13) communicating with the chamber (5) presents volume diminishing between the starting and final positions. The chamber (13) injects a dielectric gas (3) into the chamber (5) between the open and final positions when the pressure inside the chamber (5) is less than that in the chamber (13).