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IEEE STANDARD

C57.111-1989 - IEEE Guide for Acceptance of Silicone Insulating Fluid and Its Maintenance in Transformers

Description: This IEEE guide recommends standard tests and evaluation procedures for silicone transformer fluid. Criteria for maintenance and methods of reconditioning of silicone fluid are described. The purpose of the guide is to assist the transformer operator in evaluating the silicone insulating fluids in transformers, fluid received from the manufacturer for filling transformers at the installation site, and fluid processed into such transformers. It also assists the operator in maintaining the properties of silicone fluid in operating transformers.
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