Electrical apparatus having an improved liquid dielectric compos

Details Electrical apparatus having an improved liquid dielectric compos Electrical apparatus having an improved liquid dielectric compos

1984-02-02

1985-07-23

Welsh, John D.

Compositions

Fluent dielectric

O-containing

585 66, H01B 322

Patent

active

045307822

ABSTRACT:
A dielectric liquid composition for use in an electrical apparatus, such as a transformer. The dielectric composition is composed of 10% to 90% by weight of one or more hydrocarbon oils having a molecular weight distribution peak in the range of 460 to 720, and the balance being a polyalphaolefin having a molecular weight distribution peak of 320 to 600. The dielectric liquid composition has a fire point above 300.degree. C., a pour point at least as low as -20.degree. C., and is thermally stable and essentially biodegradable.

REFERENCES:
patent: 3436349 (1969-04-01), Olund
patent: 4211665 (1980-07-01), Pellegrini

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