Position indicator for drawout apparatus

Details Position indicator for drawout apparatus Position indicator for drawout apparatus

H - Electricity

01

H

306/272, 116/72

H01H 9/18 (2006.01) G08B 5/02 (2006.01) H01H 9/16 (2006.01)

Patent

CA 1058021

ABSTRACT OF THE DISCLOSURE A drawout mechanism includes a carriage mounting a circuit breaker and supported on telescoping rails to facilitate racking movement of the circuit breaker between extreme positions of electrical engagement and disengagement with respect to switchboard primary disconnect contacts. In an intermediate test position, the primary contacts are disengaged but secondary contacts of the circuit breaker and switchboard remain engaged for testing of accessorial functions. Indicator apparatus includes an elongated step cam carried by an arm pivotally mounted to the carriage. The step cam is engaged by a stationary actuator to differentially angularly orient the arm during racking movement of the circuit breaker, thus appropriately positioning a flag, also carried by the arm, to identify the various breaker positions.

248381

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