IEEE

IEEE C57.93a-2025

IEEE Guide for Installation and Maintenance of Liquid-Immersed Power Transformers Amendment 1: Cold Start of Power Transformers Filled with Natural Ester Liquids

Latest Edition2025

Country ScopeInternational / North America

CategoryTransformers Regulators and Reactors / C57 Series / Liquid-Immersed Transformers

Record Typeamendment

ApplicabilityConsensus IEEE power and energy standard used where specified by law, code, authority having jurisdiction, utility requirement, project specification, or contract

Applicability Summary

IEEE C57 family metadata record for transformers, reactors, insulating liquids, bushings, and related transformer equipment; this record points to the official IEEE SA page for IEEE C57.93a-2025.

Notes

IEEE SA page status: Active Standard. Published: 2025-06-25. IEEE record number: 11970.