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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.

Inventors:
 [1]
  1. Colonie, NY
Publication Date:
Research Org.:
General Electric Co
Sponsoring Org.:
US Energy Research and Development Administration (ERDA)
OSTI Identifier:
864557
Patent Number(s):
US 4384182
Assignee:
General Electric Company (Schenectady, NY) HQPR
DOE Contract Number:  
EX-76-C-01-2065
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
hydraulic; actuator; electric; circuit; breaker; comprises; fluid; motor; piston; breaker-opening; space; breaker-closing; opposite; accumulator; freely; communicates; supplying; pressurized; thereto; operation; connected; impeded; flow; passage; pilot; valve; allow; liquid; chamber; normally; closed; main; release; affords; communication; sump; located; rapid; closing; breaker-opening space; pressurized liquid; flow passage; electric circuit; normally closed; circuit breaker; pressurized fluid; breaker-closing space; allow rapid; pilot valve; supplying pressurized; hydraulic actuator; freely communicates; fluid motor; normally close; accumulator freely; /200/218/

Citation Formats

Imam, Imdad. Hydraulic actuator for an electric circuit breaker. United States: N. p., 1983. Web.
Imam, Imdad. Hydraulic actuator for an electric circuit breaker. United States.
Imam, Imdad. Sat . "Hydraulic actuator for an electric circuit breaker". United States. doi:. https://www.osti.gov/servlets/purl/864557.
@article{osti_864557,
title = {Hydraulic actuator for an electric circuit breaker},
author = {Imam, Imdad},
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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1983},
month = {Sat Jan 01 00:00:00 EST 1983}
}

Patent:

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