High speed hydraulically-actuated operating system for an...

Details High speed hydraulically-actuated operating system for an... High speed hydraulically-actuated operating system for an...

H - Electricity

01

H

306/208

H01H 3/24 (2006.01)

Patent

CA 1165353

RD 11,111 A HIGH SPEED HYDRAULICALLY ACTUATED OPERATING SYSTEM FOR AN ELECTRIC CIRCUIT BREAKER ABSTRACT OF THE DISCLOSURE This hydraulically-actuated operating system comprises a cylinder, a piston movable therein in an opening direction to open a circuit breaker, and an accumulator for supplying pressurized liquid to a breaker-opening piston-actuating space within the cylinder. A normally-closed valve between the accumulator and the actuating space is openable to allow pressurized liquid from the accumulator to flow through the valve into the actuating space to drive the piston in an opening direction. A dashpotting mechanism operating separately from the hydraulic actuating system is provided, thereby reducing flow restriction inter- ference with breaker opening.

380261

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