Electrical switchgear of the rotating arc, double-break type

Details Electrical switchgear of the rotating arc, double-break type Electrical switchgear of the rotating arc, double-break type

1980-05-20

1982-10-19

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148R, H01H 3318

Patent

active

043552200

ABSTRACT:
Electrical switchgear comprises a pair of contact arms which, in a contacts closed position, engage the ends of a main contact bar. Upon movement of the electrical switchgear towards a contacts open position, the contact bar disengages from the contact arms and an arc is drawn between each contact arm and a respective arcing electrode. A common field coil has its ends electrically connected to the arcing electrodes respectively, such that the arcing current flows through the field coil to create a magnetic field which causes the arcs to rotate and become extinguished. An insulating barrier separates the electrodes to prevent the arc from being transferred directly across the contact arms.

REFERENCES:
patent: 2798922 (1957-07-01), Lingal
patent: 3014109 (1961-12-01), Burger
patent: 3361887 (1968-01-01), Bachofen
patent: 3372259 (1968-03-01), Porter
patent: 3542985 (1970-11-01), Madsen

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