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Electrical conduction and dielectric breakdown characteristics of alkyl ester dielectric fluids obtained from palm kernel oil

Electrical insulating oils are used to avoid electrical breakdown in high voltage equipment. They are mainly mineral based (derived from crude oil) and leakages can be harmful to the environment. Alternative ecologically sustainable and non-toxic vegetable oil derivatives have been proposed but these do not have the appropriate physical and dielectric properties to be viable substitutes. A new synthesis technique for an ester based dielectric fluid made from palm kernel oil possessing superior electrical properties is presented. This work has been supported by National Grid (Gordon Wilson, Gordon.Wilson@nationalgrid.com.)