Electrical circuit breaker with self-expansion and rotating arc

Details Electrical circuit breaker with self-expansion and rotating arc Electrical circuit breaker with self-expansion and rotating arc

1987-03-18

1988-04-12

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200146R, 200148B, H01H 3318

Patent

active

047376074

ABSTRACT:
An electrical circuit breaker with self-expansion and rotating arc insulated with SF6 comprises a fixed arcing contact secured to the front face of a magnetic blow-out coil.
An electrode is electrically insulated from the fixed arcing contact and covers the front face being connected to the opposite end of the coil by a branch circuit. The electrode is arranged to pick up a fraction of the arcing current, so that the magnetic field generated in the breaking zone by the coil remains appreciably constant when the value of the short-circuit current exceeds a predetermined threshold.

REFERENCES:
patent: 4153827 (1979-05-01), Mircovich et al.
patent: 4249052 (1981-02-01), Votta et al.
patent: 4329551 (1982-05-01), Bernard et al.
patent: 4427859 (1984-01-01), Cancio
patent: 4463230 (1984-07-01), Perrenoud

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