发明名称 |
Hydraulically-activated operating system for an electric circuit breaker |
摘要 |
This operating system comprises a fluid motor having a piston, a breaker-opening space at one side of the piston, and a 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 valve is restored to closed position following breaker-opening. This passage is so impeded that the flow therethrough from the accumulator into the breaker-closing space is sufficiently low during initial opening motion of the piston through a substantial portion of its opening stroke as to avoid interference with said initial opening motion of the piston.
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申请公布号 |
US4166937(A) |
申请公布日期 |
1979.09.04 |
申请号 |
US19780907220 |
申请日期 |
1978.05.18 |
申请人 |
GENERAL ELECTRIC |
发明人 |
BARKAN, PHILIP;IMAM, IMDAD |
分类号 |
H01H33/34;(IPC1-7):H01H35/38 |
主分类号 |
H01H33/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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