Hydraulic device for a hydraulic drive for a high-tension circui

Details Hydraulic device for a hydraulic drive for a high-tension circui Hydraulic device for a hydraulic drive for a high-tension circui

1994-10-24

1995-12-19

Lopez, F. Daniel

Motors: expansible chamber type

Independently operated timer, delay, pattern or cyclic control

Fluid actuated valve with volume chamber delay means

91417R, F15B 2102

Patent

active

054760305

ABSTRACT:
A hydraulic device for a hydraulic drive for a high-voltage circuit-breaker includes a drive piston for a movable contact piece having two piston sides being in connection with a high-pressure reservoir in a closed condition and being acted upon by high-pressure fluid on both sides. For circuit-breaking, a switch-over valve releases a path to a low-pressure space for the fluid in the space with the larger piston area. At least one circuit-closing pilot valve and circuit-breaking pilot valve activate the switch-over valve. A settable delay volume for the fluid is connected in parallel with at least the at least one circuit-breaking pilot valve.

REFERENCES:
patent: 3012541 (1961-12-01), Meulendyk et al.
patent: 3451414 (1969-06-01), Buford et al.
patent: 3656404 (1972-04-01), Landenzon et al.
patent: 3863547 (1975-02-01), Meier et al.
patent: 3896852 (1975-07-01), Holmes

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