Patent ID: 6064025
Filing Date: 2000-05-16
Classification: H01H

Abstract:
A controller for electrical equipment, in particular for a high-voltage circuit-breaker, the equipment being housed in a casing filled with a dielectric gas under pressure, said casing having an interrupting chamber for extinguishing an arc, and provided with a contact connecting rod designed to be moved in translation by said controller, which comprises an operating piston mounted to slide in a cylindrical element fixed to the casing and in contact, at its end facing away from the equipment along a periphery of an active face of the piston, to a communication duct for communicating with the inside of the casing via an actuating valve in a first or ""engagement"" position, which valve can take up a second or ""disengagement"" position in which the dielectric gas pressing against the active face of the piston is removed from said cylindrical element, said controller further comprising:a suction enclosure connected to said cylindrical element and communicating with an internal space of said cylindrical element via a communication duct when said valve is in the disengagement position, and provided with at least one check valve for removing the gas on its face facing away from the equipment;a suction piston mounted to slide in said enclosure, whose active face faces towards the operating piston and is provided with at least one check valve allowing the gas to pass only from the active face to behind the piston; anda reciprocating drive mechanism for driving said suction piston in reciprocating motion.