Arc extinction device for gas insulation electrical switchgear
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United States of America Patent
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Sep 29, 1987
Grant Date -
N/A
app pub date -
Feb 4, 1986
filing date -
Jun 8, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to an arc extinction device for SF6 insulated electrical switchgear. A divisional arc chute 58 comprises a wall 58 with a convex revolution lateral surface, notably spherical, opposite the separation area 20, 22 of the contacts 20, 22, so as to form an acoustic resonator reflecting the pressure waves inwardly, causing the gases to converge towards the center of the sphere. At least one of the contacts is hollow and constitutes an outflow duct, for the gases from the arc chute 18 to a discharge chamber.
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