H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/207
H01H 3/00 (2006.01) H01H 33/34 (2006.01) H01H 35/26 (2006.01)
Patent
CA 1115311
ABSTRACT OF THE DISCLOSURE This operating system comprises a fluid motor having a piston, a breaker-opening space at one side of the piston, and breaker-closing space at its opposite side. An accumulator freely communicates with the breaker-opening space for supplying pressurized fluid thereto during a circuit-breaker opening operation. A normally-closed valve located on the breaker-closing-side of the piston is openable to release liquid from the breaker-closing space so that pressurized liquid in the breaker-opening space can drive the piston in an opening direction. Means is provided for restoring the valve to its closed position following the circuit-breaker opening operation. An impeded passage affords communication between the accumulator and the breaker-closing space to allow pressurized liquid to flow from the accumulator to the breaker-closing space and develop a pressure therein substantially equal to accumulator pressure when the calve is restored to closed position following break- opening. This passage is so impeded that the flow therethrough from the accumulator into the breaker- closing space is sufficiently low during initial open- ing motion of the piston through a substantial portion of its opening stroke as to avoid interference with said initial opening motion of the piston.
327965
Barkan Philip
Imam Imdad
Company General Electric
Eckersley Raymond A.
LandOfFree
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