Puffer-type gas-blast circuit-breaker

Details Puffer-type gas-blast circuit-breaker Puffer-type gas-blast circuit-breaker

1984-03-12

1985-11-12

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3388

Patent

active

045530041

ABSTRACT:
The circuit breaker has linear displacement moving contacts (3, 4) coupled to a fixed cylinder blast assembly (6) having two concentric pistons (7, 8). The first piston (7) is fixed to the moving contact equipment and is actuated by the circuit breaker control mechanism. The second piston (8) is free and is driven by electrodynamic energy from the current being interrupted. A spring (23) urges the second piston (8) towards the top (16) of the cylinder. Coupling means (30) which lock the second piston (8) when it reaches the top of the cylinder are released by the first piston (7) when it leaves the vicinity of the top (16) of the cylinder. It only requires small operating energy while enabling small intensity and large intensity currents to be interrupted by matching itself thereto.

REFERENCES:
patent: 3331935 (1967-07-01), Milianowicz
patent: 3551623 (1970-12-01), Colclaser, Jr. et al.
patent: 4041263 (1977-08-01), Noeske
patent: 4438308 (1984-03-01), Korner et al.

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