Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1979-10-22
1982-01-05
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200148A, 200146R, H01H 3370
Patent
active
043095810
ABSTRACT:
A puffer-type gas-blast circuit-breaker comprises an interrupting unit mounted in a housing filled with an insulating gas of high dielectric strength such as sulfur hexafluoride. The interrupting unit includes a main circuit having a pair of stationary and movable main contacts, and an arcing circuit having a pair of stationary and movable arcing contacts. An operating mechanism comprises a control rod coupled to the movable contacts so as to open the main contacts before the separation of the arcing contacts. A pair of input and output terminals extend out of the housing, and a shunt conductor is arranged in the arcing circuit between operating rod and the lower terminal. The longitudinally extending main and arcing circuits are connected in parallel to the terminals and form two independent current paths which are cross-wise spaced inside the housing. A partition wall divides the inner space of the housing into two superposed compartments, one of them including the main contacts, and the other the arcing zone.
REFERENCES:
patent: 3257532 (1966-06-01), Lerch
patent: 3271548 (1966-09-01), Kesselring
patent: 3671696 (1972-06-01), Brunner
Macaire Marcel
Mircovich Jean-Louis
Gerin Merlin
Macon Robert S.
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