Registry
Official Source

IEEE

IEEE C57.12.91-2026

IEEE Approved Draft Standard for Standard Test Code for Dry-Type Distribution and Power Transformers

Latest Edition2026
Country ScopeInternational / North America
CategoryTransformers Regulators and Reactors / C57 Series / Test Codes and Methods
Record Typestandard
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 C57.12.91-2026.

Notes

IEEE SA page status: Active Standard. IEEE record number: 10863.