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Title: High voltage capability electrical coils insulated with materials containing SF.sub.6 gas

Patent ·
OSTI ID:866624

A coil is made having a plurality of layers of adjacent metal conductor windings subject to voltage stress, where the windings have insulation therebetween containing a small number of minute disposed throughout its cross-section, where the voids are voids filled with SF.sub.6 gas to substitute for air or other gaseous materials in from about 60% to about 95% of the cross-sectional void volume in the insulation, thus incorporating an amount of SF.sub.6 gas in the cross-section of the insulation effective to substantially increase corona inception voltages.

DOE Contract Number:
ET-78-R-01-3007
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 4751488
OSTI ID:
866624
Country of Publication:
United States
Language:
English