Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1989-02-08
1990-12-25
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
H01H 3318
Patent
active
049805274
ABSTRACT:
An arc spinner interrupter includes a first fixed electrical contact and a ring electrode coupled to the fixed contact through a field coil surrounding the ring electrode. A second electrical contact has an arm which moves along a path perpendicular to the central longitudinal axis for selective connection with the fixed contact. The arm may have a generally L-shaped configuration including an angled portion that extends in a direction parallel to the central longitudinal axis. The fixed electrical contact is disposed radially outward of the ring electrode so that the generally L-shaped end of the second contact moves generally toward the central longitudinal axis when disconnected from the fixed electrical contact. During movement of the second contact away from the fixed contact, electromagnetic forces are simultaneously exerted on the arc due to the general L-shape of the arm of the second contact and move the arc material both toward the ring electrode and in the direction in which the arc spins once it has commuted to the ring electrode.
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"Rotating Arc Driven by Magnetic Flux in SFG Gas", by Kazushi Fujiwara et al., presented at Second International Symposium on Switching Arc Phenomena, Lodz, Poland,--Sep. 25-27, 1973.
A. B. Chance Company
Macon Robert S.
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