IEEE C57.94-2025

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™.

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