Vegetable oil dielectric fluid composition

An electrical device with a dielectric fluid composition therein, wherein the dielectric fluid composition comprises

• a Northern European winter rapeseed oil having a fatty acid distribution with an oleic acid content of about 57%;
• at least one of a pour point depressant and an antioxidant;
• and
• 30% by weight to 70% by weight of a synthetic ester, wherein the composition is essentially free of GMO material.

A method of filling a transformer with a dielectric fluid, comprising:

• removing an original dielectric fluid composition from the transformer;
• and
• replacing the original dielectric fluid with a new dielectric fluid composition comprising:
• at least one refined, bleached and deodorized Northern European winter rapeseed oil having a fatty acid distribution with an oleic acid content of about 57%, and
• at least one of an antioxidant and a pour point depressant;
• wherein the new dielectric fluid composition has a pour point of less than about −20° C. as measured by either of ASTM D97 or ASTM D5950, and wherein the new dielectric fluid composition is essentially free of GMO material.

A method, comprising:

• providing an electrical device comprising a conductor insulated by a paper insulating material;
• and
• extending the service life of the paper insulating material in the electrical distribution device by employing in the device a dielectric fluid composition comprising:
• at least one refined, bleached and deodorized Northern European winter rapeseed oil having a fatty acid distribution with an oleic acid content of about 57%, and
• at least one of an antioxidant and a pour point depressant,
• wherein the dielectric fluid composition has a pour point of less than about −20° C. as measured by either of ASTM D97 or ASTM D5950, and wherein the dielectric fluid composition is essentially free of GMO material.