Vegetable oil based dielectric fluid and methods of using same
AssigneeCooper Industries, Inc.
InventorsJerry L. Corkran, C. Patrick McShane, Kevin J. Rapp, Gary A. Gauger, Richard A. Harthun
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Abstract
In one aspect, the present invention provides a dielectric fluid for use in electrical equipment comprising a vegetable oil or vegetable oil blend. In another aspect the invention provides devices for generating and distributing electrical energy that incorporate a dielectric fluid comprising a vegetable oil or vegetable oil blend. Methods of retrofilling electrical equipment with vegetable oil based dielectric fluids also are provided.
Claims5
A transformer comprising a housing, a core/coil assembly in the housing, and a dielectric fluid at least partially surrounding the core/coil assembly, wherein the dielectric fluid consists of one or more vegetable oils and one or more antioxidant compounds, and wherein the one or more vegetable oils have a viscosity of between 2 and 15 cSt at 100° C. and less than 110 cSt at 40° C.
A transformer comprising a housing, a core/coil assembly in the housing, and a dielectric fluid at least partially surrounding the core/coil assembly, wherein the dielectric fluid consists of:
- one or more vegetable oils with a viscosity of between 2 and 15 cSt at 100° C. and less than 110 cSt at 40° C.;
- at least one antioxidant compound selected from the group consisting of butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), tertiary butylhydroxyquinone (TBHQ), tetrahydroxybutrophenone (THBP), ascorbyl palmitate, propyl gallate and alpha-, beta- or delta- tocopherol;
- and
- at least one of a low temperature additive and an antimicrobial additive.
A method of using a transformer, comprising employing in the transformer a dielectric fluid, the dielectric fluid consisting of one or more vegetable oils and one or more antioxidant compounds, and wherein the one or more vegetable oils have a viscosity of between 2 and 15 cSt at 100° C. and less than 110 cSt at 40° C.
Dependencies are inferred from the claim text.