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Title: Circuit breaker lockout device

Abstract

An improved lockout assembly for locking a circuit breaker in a selected off or on position is provided. The lockout assembly includes a lock block and a lock pin. The lock block has a hollow interior which fits over the free end of a switch handle of the circuit breaker. The lock block includes at least one hole that is placed in registration with a hole in the free end of the switch handle. A lock tab on the lock block serves to align and register the respective holes on the lock block and switch handle. A lock pin is inserted through the registered holes and serves to connect the lock block to the switch handle. Once the lock block and the switch handle are connected, the position of the switch handle is prevented from being changed by the lock tab bumping up against a stationary housing portion of the circuit breaker. When the lock pin installed, an apertured-end portion of the lock pin is in registration with another hole on the lock block. Then a special scissors conforming to O.S.H.A. regulations can be installed, with one or more padlocks, on the lockout assembly to prevent removal of the lockmore » pin from the lockout assembly, thereby preventing removal of the lockout assembly from the circuit breaker. 2 figs.« less

Inventors:
;
Issue Date:
Research Org.:
Westinghouse Electric Corp
OSTI Identifier:
7234578
Patent Number(s):
5165528 A
Application Number:
PPN: US 7-761525
Assignee:
Dept. of Energy, Washington, DC (United States) PNRO; EDB-94-088060
DOE Contract Number:  
AC11-89PN38014
Resource Type:
Patent
Resource Relation:
Patent File Date: 18 Sep 1991
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; CIRCUIT BREAKERS; PHYSICAL PROTECTION DEVICES; HEALTH HAZARDS; HUMAN FACTORS; SAFETY; ELECTRICAL EQUIPMENT; EQUIPMENT; EQUIPMENT PROTECTION DEVICES; HAZARDS; 240200* - Power System Networks, Transmission & Distribution- (1990-)

Citation Formats

Kozlowski, L.J., and Shirey, L.A. Circuit breaker lockout device. United States: N. p., 1992. Web.
Kozlowski, L.J., & Shirey, L.A. Circuit breaker lockout device. United States.
Kozlowski, L.J., and Shirey, L.A. Tue . "Circuit breaker lockout device". United States.
@article{osti_7234578,
title = {Circuit breaker lockout device},
author = {Kozlowski, L.J. and Shirey, L.A.},
abstractNote = {An improved lockout assembly for locking a circuit breaker in a selected off or on position is provided. The lockout assembly includes a lock block and a lock pin. The lock block has a hollow interior which fits over the free end of a switch handle of the circuit breaker. The lock block includes at least one hole that is placed in registration with a hole in the free end of the switch handle. A lock tab on the lock block serves to align and register the respective holes on the lock block and switch handle. A lock pin is inserted through the registered holes and serves to connect the lock block to the switch handle. Once the lock block and the switch handle are connected, the position of the switch handle is prevented from being changed by the lock tab bumping up against a stationary housing portion of the circuit breaker. When the lock pin installed, an apertured-end portion of the lock pin is in registration with another hole on the lock block. Then a special scissors conforming to O.S.H.A. regulations can be installed, with one or more padlocks, on the lockout assembly to prevent removal of the lock pin from the lockout assembly, thereby preventing removal of the lockout assembly from the circuit breaker. 2 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {11}
}