Circuit breaker low oil trip and/or lockout apparatus

Details Circuit breaker low oil trip and/or lockout apparatus Circuit breaker low oil trip and/or lockout apparatus

H - Electricity

01

H

306/74, 340/146.

H01H 83/20 (2006.01) H01F 27/40 (2006.01) H02H 5/08 (2006.01)

Patent

CA 1252176

ABSTRACT A low oil lock-out and/or trip apparatus for a submersible transformer circuit breaker of the type having a manually operated crank shaft assembly for opening and closing the circuit breaker and a fault trip assembly for opening the circuit breaker under fault current conditions, the apparatus including a float assembly which is responsive to changes in oil level in said transformer and a rod carried by said float for blocking the movement of the crankshaft and a trip member for tripping the trip assembly when the oil level drops below a predetermined level in the transformer.

500654

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