D.C. breaker arc extinguishing circuit

Details D.C. breaker arc extinguishing circuit D.C. breaker arc extinguishing circuit

1996-04-26

1997-01-28

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 13, H02H 300

Patent

active

055983111

ABSTRACT:
A circuit for preventing ionization of air between contact points of a DC breaker switch when the breaker switch is opened includes a capacitor connected through a diode to form a shunt between the contact points when the switch is breaker switch is opened. A second switch is operated following shunting of residual voltage on the contact points so as to discharge the capacitor.

REFERENCES:
patent: 3739192 (1973-06-01), Oswald
patent: 4623948 (1986-11-01), Volut
patent: 5339210 (1994-08-01), Howell

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