Direct current circuit interrupting apparatus

Details Direct current circuit interrupting apparatus Direct current circuit interrupting apparatus

1977-09-28

1979-10-23

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 6, 361 8, 307134, H02H 722

Patent

active

041722680

ABSTRACT:
A direct current circuit interrupting apparatus of the type wherein the arc of the circuit interruptor is extinguished by passing an oscillatory current from an oscillating circuit to the interrupted contacts via a switch means which is closed at the time when the circuit interruptor is opened includes a nonlinear resistor comprising a sintered mixture of metal oxides connected in parallel with the oscillating circuit.

REFERENCES:
patent: 2942152 (1960-06-01), Stoelting
patent: 3454832 (1969-07-01), Hurtle
patent: 3476978 (1969-11-01), Greenwood
patent: 3515940 (1970-06-01), Hobson, Jr.
patent: 3708718 (1973-01-01), Hoffmann et al.
patent: 3805114 (1974-04-01), Matsuoka et al.
patent: 3806765 (1974-04-01), Matsuoka et al.
patent: 4056836 (1977-11-01), Knauer
Panel Session on "Prospects for Multiterminal H.V.D.C. Transmission Status of D.C. Interrupting Devices", by G. D. Breuer-G.E. Co. IEEE Power Engr. Society, 1977 Summer Meeting Mexico City.
"Theory and Application of the Commutation Principle for H.V.D.C. Circuit Breakers", by A. N. Greenwood, T. H. Lee; IEEE PAS vol. 91, No. 4, 1972 pp. 1570-1574.
"H.V.D.C. Vacuum Circuit Breakers", by A. N. Greenwood, P. Barkan, W. C. Kracht; IEEE-PAS, vol. 91, No. 4, 1972 pp. 1575-1587.

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