Gas-insulated switch for an underground power distrubution syste

Details Gas-insulated switch for an underground power distrubution syste Gas-insulated switch for an underground power distrubution syste

1974-01-09

1976-03-30

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148A, H01H 3388

Patent

active

039476502

ABSTRACT:
An electric switch suitable for use in underground distribution (UD) systems includes a conductive housing having at least one pair of insulated feed-through bushings mounted thereon. The bushings are adapted to receive underground conductor terminations external of the housing and electrodes of a circuit interrupter internal of the housing. The circuit interrupter is responsive to a mechanism which alternately engages and disengages the electrodes. The housing encloses a volume of electronegative gas which gas acts to extinguish the arc drawn between the electrodes during a switching operation, and to provide electrical insulation between the individual electrodes and between the electrodes and the conductive housing. The gas is maintained at a sufficiently low pressure to prevent liquefication even at low-ambient temperatures.

REFERENCES:
patent: 2981815 (1961-04-01), Leeds et al.
patent: 3025375 (1962-03-01), Frank
patent: 3052783 (1962-09-01), Buron
patent: 3214550 (1965-10-01), Easley
patent: 3527912 (1970-09-01), Jaillet
patent: 3745284 (1973-07-01), Hosokawa

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