Draw-out circuit breaker unit with coordinated cable interlock a

Details Draw-out circuit breaker unit with coordinated cable interlock a Draw-out circuit breaker unit with coordinated cable interlock a

1994-11-04

1996-01-23

Thompson, Gregory D.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electrical power distribution systems and devices

200 50C, H02B 114

Patent

active

054869781

ABSTRACT:
A cable interlock actuated by a plunger extended from the back of a draw-out circuit breaker when the breaker is closed, prevents closure of a second circuit breaker by holding it in the trip condition. A shutter which closes to prevent access to power system terminations at the rear of the draw-out circuit breaker enclosure when the breaker is removed, blocks operation of the interlock to prevent tripping of the other circuit breaker.

REFERENCES:
patent: 4285026 (1981-08-01), Clausing
patent: 4400599 (1983-08-01), Richmann
patent: 4486815 (1984-12-01), Takahashi
patent: 4565908 (1986-01-01), Bould
patent: 5227952 (1993-07-01), Romano et al.
Westinghouse Electric Corporation Distribution and Control Business Unit Electrical Components Division, Article; Installation Instructions for the Mechanical Cable Interlock for Through the Door Drawout Systems Pow-r Breakers; Dec. 1992, pp. 1-4.

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