Fire-retardant electric device
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United States of America Patent
Stats
-
Mar 14, 1989
Grant Date -
N/A
app pub date -
Jan 22, 1988
filing date -
Jan 30, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electric device particularly adapted for a fire retardant oil-filled transformer, comprising a cellulose-based insulating material impregnated with an insulating oil composed of 100 parts by weight of an ester of a polyol with a fatty acid having a fire point of 300.degree. C. or above and, incorporated therein, 0.005 to 1.0 part by weight of a phenolic compound having no alkyl groups as the substituent at the ortho positions and 0.01 to 2.0 parts by weight of an epoxy compound.
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