Locking arrangement for disconnect switch

Details Locking arrangement for disconnect switch Locking arrangement for disconnect switch

1992-03-17

1993-12-07

Luebke, Renee S.

Electricity: circuit makers and breakers

Switch activation inhibitor

Actuator locking device

200 4301, 200 48A, 292148, H01H 928

Patent

active

052685438

ABSTRACT:
An arrangement for locking the disconnect linkage of a high-voltage switch is provided that includes two relatively movable locking members that are each moved between locked and unlocked positions in response to operation of the disconnect linkage. As the disconnect linkage is moved to an opened position, the two locking members are moved into relative overlapping alignment to receive a blocking member to prevent movement of the disconnect linkage. One locking member is carried by the disconnect linkage and the second member is carried by a pivotally mounted support arm that is affixed to the disconnect linkage so as to move therewith. Accordingly, the second locking member does not encroach on the space adjacent the disconnect linkage except when it is moved into alignment in the opened position. The support arm that carries the second locking member is arranged to guide the disconnect linkage and prevents undesirable movement of the disconnect linkage due to transverse forces on the disconnect linkage during movement between the opened and closed positions.

REFERENCES:
patent: 1260469 (1918-03-01), Smith
patent: 2679567 (1954-05-01), Kradel
patent: 3572062 (1971-03-01), Beebe
patent: 4423895 (1984-01-01), Mosley, Jr.
patent: 4489966 (1984-12-01), Beebe et al.
patent: 4669589 (1987-06-01), Rogers
patent: 4986578 (1991-01-01), Hall
Descriptive Bulletin 719-30 dated Nov. 13, 1989, S&C Electric Company.
Instruction Sheet 761-500 dated Feb. 11, 1985, S&C Electric Company.
Instruction Sheet 761-535 dated Jul. 23, 1990, S&C Electric Company.

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