Ground and test connection for SF.sub.6 insulated bus

Details Ground and test connection for SF.sub.6 insulated bus Ground and test connection for SF.sub.6 insulated bus

1974-12-05

1976-10-19

Scott, James R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148R, H01H 3360

Patent

active

039872602

ABSTRACT:
A grounding and test switch for a fully enclosed pressurized gas insulated high voltage system wherein the conductors are completely isolated in an SF.sub.6 or other gas insulating environment. The grounding switch is provided with a contact arm and a movable contact within the enclosure to engage a stationary contact connected to or on the conductor or device inside the enclosure. The contact arm is operable through a gas tight seal from outside the enclosure. The contact arm slides with respect to another stationary contact which provides a direct and positive electrical connection thereto so that the contact arm, when engaged with the first mentioned stationary contact forms a conducting bridge to ground between the first mentioned and second mentioned stationary contact.

REFERENCES:
patent: 2813177 (1957-11-01), Eberhard et al.
patent: 3567885 (1971-03-01), Boersma
patent: 3665135 (1972-05-01), Boersma et al.
patent: 3778574 (1973-12-01), Clark
patent: 3876846 (1975-04-01), Graybill

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