Hydraulic actuator for an electric circuit breaker
This actuator 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. The breaker-opening space and the breaker-closing space are connected by an impeded flow passage. A pilot valve opens to allow the pressurized liquid in the breaker-closing space to flow to a back chamber of a normally closed main valve to cause the main valve to be opened during a circuit breaker opening operation to release the pressurized liquid from the breaker-closing space. An impeded passage affords communication between the back chamber and a sump located on the opposite side of the main valve from the back chamber. The pilot valve and impeded passage allow rapid opening of the main valve with pressurized liquid from the breaker closing side of the piston. 3 figs.
- Research Organization:
- General Electric Co., Schenectady, NY (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EX-76-C-01-2065
- Assignee:
- General Electric Co., Schenectady, NY (United States)
- Patent Number(s):
- A; US 4384182
- Application Number:
- PPN: US 6-154236
- OSTI ID:
- 7154404
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hydraulically-activated operating system for an electric circuit breaker
Hydraulically-actuated operating system for an electric circuit breaker
Related Subjects
240100* -- Power Systems-- (1990-)
ACCUMULATORS
CIRCUIT BREAKERS
CONTAINERS
ELECTRICAL EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
FLUIDS
HYDRAULIC ACCUMULATORS
HYDRAULIC EQUIPMENT
HYDRAULIC FLUIDS
MECHANICAL ENERGY STORAGE EQUIPMENT
POWER SYSTEMS
TANKS
WORKING FLUIDS