Switchgear with top mounted vertical takeoff tripping and spring

Details Switchgear with top mounted vertical takeoff tripping and spring Switchgear with top mounted vertical takeoff tripping and spring

1996-03-25

1997-05-13

Walczak, David J.

Electricity: circuit makers and breakers

Contact moved by sudden release of stored energy,

200401, H01H 500

Patent

active

056283946

ABSTRACT:
Switchgear with a closing spring release and an opening release accessible from a front face is further provided with top mounted closing and opening spring releases. In order to avoid interference with internal parts of the switchgear and to follow the movement of the trip mechanisms to which they are connected, these top mounted spring releases are flexible elongated members preferably in the form of flat stainless spring steel straps. The flat strap of the top mounted opening spring release has a slot engaging the opening trip lever and is sized so as not to engage the trip lever when the front accessible spring release is otherwise actuated. As the horizontal pivot axis of the closing spring trip lever moves transversely, the flat strap of the top mounted closing spring release is oriented to bend in the same direction while the lower end section is twisted 90.degree. to receive a coupling pin on the trip lever.

REFERENCES:
patent: 4343030 (1982-08-01), Date et al.
patent: 4475021 (1984-10-01), Mochizuki
patent: 4743876 (1988-05-01), Milianowicz et al.
Westinghouse & Cutler/-Hammer Products; Instructions for the Use, Operation and Maintenance of the Red Line Type VCP-WR Vacuum Circuit Breaker Elements; I.B. 8295A61H01; Apr. 1, 1994.

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