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IEEE C57.94-2025

IEEE Recommended Practice for Installation, Application, Operation, and Maintenance of Dry-Type Distribution and Power Transformers
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IEEE C57.94-2025

IEEE Recommended Practice for Installation, Application, Operation, and Maintenance of Dry-Type Distribution and Power Transformers

PUBLISH DATE 2026
PAGES 30
IEEE C57.94-2025

**Revision Standard - Active.**

Recommendations for the operation and maintenance of *dry-type distribution and power transformers* are provided in this recommended practice.

This recommended practice describes general recommendations for the installation, application, operation, and maintenance of all single and polyphase ventilated, non-ventilated, and sealed dry-type distribution and power transformers or autotransformers, including those with solid-cast and/or resin encapsulated windings, except transformers described as exceptions in IEEE Std C57.12.01™.

NOTE--Where IEEE standards do not exist for the transformers mentioned above or for other special transformers, this standard may be applicable as a whole or in parts, subject to agreement between the parties responsible for the application and for the design of the transformer.

The purpose of this recommended practice is to provide a reference for general use in the installation, application, operation, and maintenance of dry-type transformers manufactured in accordance with IEEE Std C57.12.01, IEEE Std C57.12.51™, and IEEE Std C57.12.52™.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.94
Publication Date May 5, 2026
Language en - English
Page Count 30
Revision Level
Supercedes
Committee Transformers
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