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IEEE Standard Test Code for Dry-Type Distribution and Power Transformers
Revision Standard - Active.
To reflect current practice in the testing procedures of dry-type transformers, substantive changes to Clause 5, Clause 8, Clause 9, Clause 10, Clause 11, and Clause 12 of IEEE Std C57.12.91™-2020 have been made in this revision.
Transformer requirements and specific test criteria are not addressed; rather, they are contained in appropriate standards such as IEEE Std C57.12.01™ or in user specifications.
This standard describes methods for performing tests specified in IEEE Std C57.12.01 and other referenced standards applicable to dry-type distribution and power transformers, with a voltage of 601 V or higher in the highest voltage winding.
It is intended for use as a basis for performance and for the proper testing of dry-type distribution and power transformers.
This standard applies to all dry-type transformers including those with solid cast and/or resin encapsulated windings, except as follows:
The purpose of this standard is to provide information regarding the procedures for the testing of dry-type transformers.
Transformer requirements and specific test criteria are not a part of this standard but are contained in appropriate standards such as IEEE Std C57.12.01 or in user specifications.
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