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Title: Hydraulic actuator for an electric circuit breaker

Abstract

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.

Inventors:
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
7154404
Patent Number(s):
4384182 A
Application Number:
PPN: US 6-154236
Assignee:
General Electric Co., Schenectady, NY (United States)
DOE Contract Number:  
EX-76-C-01-2065
Resource Type:
Patent
Resource Relation:
Patent File Date: 29 May 1980
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; POWER SYSTEMS; CIRCUIT BREAKERS; HYDRAULIC ACCUMULATORS; HYDRAULIC EQUIPMENT; HYDRAULIC FLUIDS; ACCUMULATORS; CONTAINERS; ELECTRICAL EQUIPMENT; ENERGY SYSTEMS; EQUIPMENT; EQUIPMENT PROTECTION DEVICES; FLUIDS; MECHANICAL ENERGY STORAGE EQUIPMENT; TANKS; WORKING FLUIDS; 240100* - Power Systems- (1990-)

Citation Formats

Imam, I. Hydraulic actuator for an electric circuit breaker. United States: N. p., 1983. Web.
Imam, I. Hydraulic actuator for an electric circuit breaker. United States.
Imam, I. Tue . "Hydraulic actuator for an electric circuit breaker". United States.
@article{osti_7154404,
title = {Hydraulic actuator for an electric circuit breaker},
author = {Imam, I.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {5}
}