Electrical apparatus having an improved liquid dielectric...

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

H - Electricity

01

F

31/102

H01F 41/12 (2006.01)

Patent

CA 1192036

ELECTRICAL APPARATUS HAVING AN IMPROVED LIQUID DIELECTRIC COMPOSITION Abstract of the Disclosure A dielectric liquid composition for use in an electrical apparatus, such as a transformer. The dielectric composition is composed of 1% to 30% by weight of a low molecular weight hydrocarbon oil having a molecular weight distribution peak in the range of 460 to 510, 40% to 80% of a high molecular weight hydro- carbon oil having a molecular weight distribution peak in the range of 600 to 650 and the balance being a polyalphaolefin, having a molecular weight distribu- tion peak of 530 to 580. The dielectric liquid composi- tion has a fire point above 300°C, a pour point below -20°C, and is thermally stable and biodegradable.

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