Fire-retardant electric device

Details Fire-retardant electric device Fire-retardant electric device

1988-01-22

1989-03-14

Wax, Robert A.

Compositions

Defined liquid dielectric dispersed in defined web or sheet

252579, 336 94, H01B 320

Patent

active

048122629

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.

REFERENCES:
patent: 3740625 (1973-06-01), Ross et al.
patent: 3925221 (1975-12-01), Eustance

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