High oleic acid oil compositions and methods of making and electrical insulation fluids and devices comprising the same

An electrical insulating fluid comprising:

• at least 75% of high oleic acid triglyceride composition comprising fatty acid components of
• at least 75% oleic acid
• less than 10% diunsaturated fatty acid component C16-C22;
• less than 3% triunsaturated fatty acid C16-C22 component;
• less than 8% saturated fatty acid component C16-C22;
• and
• 0.1-3% of antioxidant additive;
• wherein said electrical insulating fluid is further characterized by the properties of:
• a dielectric strength of at least 35 KV/100 mil gap;
• a dissipation factor of less than 0.05% at 25° C.;
• acidity of less than 0.03 mg KOH/g;
• and
• electrical conductivity of less than 1 pS/in at 25° C.

An electrical apparatus comprising:

• an electrical insulating fluid comprising:
• at least 75% of high oleic acid triglyceride composition comprising fatty acid components of
• at least 75% oleic acid;
• less than 10% diunsaturated fatty acid component C16-C22;
• less than 3% triunsaturated fatty acid C16-C22 component;
• less than 8% saturated fatty acid component C16-C22;
• and
• 0.1-3% of antioxidant additive,
• wherein said electrical insulating fluid is further characterized by the properties of:
• a dielectric strength of at least 35 KV/100 mil gap;
• a dissipation factor of less than 0.05% at 25° C.;
• acidity of less than 0.03 mg KOH/g;
• and
• electrical conductivity of less than 1 pS/m at 25° C.

The use, in a method of insulating an electrical apparatus, of an electrical insulating fluid comprising:

• at least 75% of high oleic acid triglyceride composition comprising fatty acid components of
• at least 75% oleic acid;
• less than 10% diunsaturated fatty acid component C16-C22;
• less than 3% triunsaturated fatty acid C16-C22 component;
• less than 8% saturated fatty acid component C16-C22;
• and
• 0.1-3% of antioxidant additive
• wherein said electrical insulating fluid is further characterized by the properties of:
• a dielectric strength of at least 35 KV/100 mil gap;
• a dissipation factor of less than 0.05% at 25° C;
• acidity of less than 0.03 mg KOH/g;
• and
• electrical conductivity of less than 1 pS/in at 25° C.