Circuit breaker with triple movement for high or medium voltages
AssigneeGEC Alsthom SA
InventorMichel Perret
Life of this patent
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Abstract
A circuit breaker has within a casing filled with a dielectric gas, especially SF.sub.6, a first arcing contact electrically connected to a first terminal, and a second arcing contact electrically connected to a second terminal. The second arcing contact is movable within a fixed cylinder. A piston is movable within said fixed cylinder. The fixed cylinder and the piston form a compression chamber. The first arcing contact and the piston are movable relative to each other. An actuating mechanism actuates the first arcing contact in a direction opposite to that of displacement of the second contact, and actuates the piston in a direction opposite to that of the displacement of the second contact.
Claims5
A circuit breaker comprising, within a casing filled with a dielectric gas, a first arcing contact electrically connected to a first terminal, and a second arcing contact electrically connected to a second terminal and movable within a fixed cylinder, a piston slidably mounted in said fixed cylinder and forming with said cylinder a compression chamber, means for mounting said first arcing contact for movement coaxially towards and away from said piston, the circuit breaker further comprising actuating means for actuating the first arcing contact in a direction opposite to a displacement of the second arcing contact and for actuating the piston in a direction opposite to that of the displacement of the second arcing contact, and wherein the movement of the first arcing contact and that of said piston are simultaneous.
Dependencies are inferred from the claim text.