Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1975-03-04
1978-08-29
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200148B, 200153SC, 200148A, H01H 3312, H01H 3314
Patent
active
041105796
ABSTRACT:
An improved operating mechanism of the energy-storage type is provided for circuit-interrupting structures, including an energy-storing means having the energy content therein increased by the movement of a movable member during the closing operation, and a collapsible toggle-linkage is provided between the energy-storing means and the separable arcing contact structure of the circuit-interrupter structure. Improved means are provided for a tripping operation, and thereby effecting the collapse of said toggle-linkage to effect the opening of said separable contact structure, and a second releasing means is preferably provided for discharging the stored-energy of the energy-storing means to effect thereby the straightening of said toggle-linkage and the consequent closing of the separable contacts within the circuit-interrupter during the closing operation.
The aforesaid improved operating mechanism is additionally applicable to the situation in which a serially-related disconnecting-switch structure is used in electrical series with the circuit-interrupting structure, so that a visible open-circuit safe gap is provided in the fully-open-circuit position of the device for safety of maintenance personnel.
The energy-storing means, preferably, is provided by suitable spring-means, such as, for example, compression-spring means, which has the energy content therein increased during the closing operation of the circuit interrupter by suitable crank-means, for example, which increases the energy content of the energy-storage means until a certain point in closing travel is reached, at which point releasing means effects an extension of said spring means to thereby effect straightening of the toggle-linkage associated with the contacts of the circuit-interrupter and consequent closing of the separable contacts thereof.
An extension of the movable member, which provides an increase in the energy-storage content of the energy-storage means effects opening and closing movements of a conjointly-acting serially-related disconnecting switchblade.
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Frink Russell E.
Milianowicz Stanislaw A.
Crout W. R.
Macon Robert S.
Westinghouse Electric Corp.
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