Soybean based transformer oil and transmission line fluid
AssigneeWaverly Light and Power
InventorsGlenn S. Cannon, Lou A. T. Honary
Life of this patent
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Abstract
A biodegradable soybean oil based electrically insulating fluid. The base oil is hydrogenated to produce maximum possible stability of the soybean oil, and can be winterized to remove crystallized fats and improve the pour point of the base oil without the necessity of heating the oil. The base oil can also be combined with an additive package containing materials specifically designed for improved pour point, improved cooling properties, and improved dielectric stability.
Claims52
A method of insulating an electrical component comprising:
- creating an electrically insulting fluid of a soybean oil base of 35% or greater oleic acid content and an antioxidant;
- placing the fluid into the electrical component.
An electrically insulating fluid for electrical components comprising:
- a base oil comprising one of a partially hydrogenated soybean oil and a soybean oil made from genetically engineered soybeans of 35% to 48% oleic acid content;
- and an antioxidant;
- wherein the antioxidant comprises between 200 to 10,000 ppm of the fluid.
A process for producing a soybean-based electrically insulating fluid comprising:
- partially hydrogenating soybean oil to modify the soybean oil to an oleic acid content of 35% to 48% to stabilize the oil;
- winterizing the stabilized soybean oil to remove crystallized fats and reduce pour point;
- and
- combining the soybean oil with a thinning ester and an antioxidant to produce an electrically insulating fluid having a kinematic viscosity in the range of 20-40 cSt at 40.degree. C.
An electrical component which utilizes an electrically insulating fluid, comprising:
- a body, the body including a cavity for the fluid;
- electrically insulating fluid in the cavity, the fluid comprising a base oil of one of partially hydrogenated soybean oil or soybean oil from genetically engineered soybeans of 35% or greater oleic acid content, and an antioxidant.
Dependencies are inferred from the claim text.