Current limiting circuit interrupter

Details Current limiting circuit interrupter Current limiting circuit interrupter

1986-03-14

1987-04-07

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147R, H01H 3312, H01H 3318

Patent

active

046563245

ABSTRACT:
A pair of main contacts and a pair of arcing contacts are electrically and mechanically interconnected within a current limiting circuit interrupter. A common operator biases the main contacts in a closed contact condition, while simultaneously biasing the arcing contacts to an open condition. A contact driver operating to open the main contacts simultaneously closes the arcing contacts causing circuit current to pass through both the main and arcing contacts. Further displacement of the moving contacts completely directs the circuit current through the arcing contacts for electromagnetic repulsion and arcing within a magnetic structure.

REFERENCES:
patent: 1645905 (1927-10-01), Gregory et al.
patent: 4001742 (1977-01-01), Jencks et al.
patent: 4039983 (1977-08-01), Terracol et al.
patent: 4115829 (1978-09-01), Howell
Edward Keith Howell, "Current Limiting Circuit Breaker", Ser. No. 674,810, filed Nov. 26, 1984.
Edward Keith Howell, "High Speed Contact Driver for Circuit Interruption Device", filed 12/30/85, Ser. No. 814,865.
Edward Keith Howell, "Varistor Quenched Arc Chute for Current Limiting Circuit Interrupters", Ser. No. 839,379.

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