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IEEE C57.134-2024

IEEE Guide for Determination of Hottest-Spot Temperature in Dry-Type Transformers
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IEEE C57.134-2024

IEEE Guide for Determination of Hottest-Spot Temperature in Dry-Type Transformers

PUBLISH DATE 2025
PAGES 27
IEEE C57.134-2024

Revision Standard - Active.

Methodologies for determination of the steady-state winding, hottest-spot temperature in dry-type distribution and power transformers are described in this guide.

This guide applies to all dry-type transformers, including those with ventilated, sealed, solid cast, and encapsulated windings except transformers described as exceptions in IEEE Std C57.12.01.

This guide describes methodologies for determination of the steady-state winding, hottest-spot temperature in dry-type distribution and power transformers.

This guide applies to all dry-type transformers, including those with ventilated, sealed, solid-cast, and encapsulated windings, excluding transformers described as exceptions in IEEE Std C57.12.01.

This guide provides a uniform methodology for determination of winding hottest-spot temperature.

The methods provide consistency in testing and calculations for manufacturers’ verification of the winding hottest-spot temperature to the user, and for validation and review of winding hottest-spot temperature limits.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.134
Publication Date Jan. 14, 2025
Language en - English
Page Count 27
Revision Level
Supercedes
Committee Transformers
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