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ASTM Adopts Standard for Recycled Oil use in Transformers

Feb. 14, 2023
The new standard (D8180) will serve as a basis for the transformer industry to purchase re-refined transformer liquid.

ASTM International’s electrical insulating liquids and gases committee (D27) has approved a new standard that will cover the use of recycled oil in electrical equipment.

Most wet-type transformers in service today use mineral oil, but because of economic and other factors, alternatives are growing in popularity.

According to ASTM member Jimmy Rasco, the new standard (D8180) will serve as a basis for the transformer industry to purchase re-refined transformer liquid.

“A standard for this purpose does not currently exist and there is confusion in the industry as to what should be used,” says Rasco. “This standard will explain the purchasing of re-refined transformer mineral insulating liquid.”

Rasco says that anyone responsible for building, using, or writing specifications for transformers will find the new standard useful. 

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