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IEEE C57.100-2022

Current Revision

IEEE Standard Test Procedure for Thermal Evaluation of Insulation Systems for Liquid-Immersed Distribution and Power Transformers

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Revision Standard - Active. A series of test procedures to provide uniform methods for investigating the effects of operating temperature on the life expectancy of liquid-immersed transformers or insulation systems is provided. The test procedures are intended to provide data for the selection of a limiting hottest-spot temperature for rating purposes, provide data which may serve as the basis for a guide for loading, and permit the comparative evaluation of a proposed insulation system with reference to a system that has proven to be acceptable in service.
This standard applies to the insulation systems used in all liquid-immersed distribution and power transformers. This standard provides test procedures to evaluate the thermal aging characteristics of insulation systems used in liquid-immersed distribution or power transformers. The dielectric liquid is part of the insulation system.
The objective of this test procedure is to establish uniform methods for investigating the effects of operating temperature on the life expectancy of liquid-immersed transformer insulation systems. The results of these test procedures are expected to be as follows: a) Provide the basis for the selection of a limiting hottest-spot temperature for rating purposes b) Provide life curves that may serve as the basis for a guide for loading c) Permit the comparative evaluation of a proposed insulation system with reference to an industry-proven system (IPS) that has been shown to be acceptable in service

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.100
Publication Date March 24, 2023
Language en - English
Page Count 64
Revision Level
Supercedes
Committee Transformers
Publish Date Document Id Type View
March 24, 2023 C57.100-2022 Revision
Jan. 27, 2012 C57.100-2011 Revision
Oct. 7, 1999 C57.100-1999 Revision
Sept. 15, 1986 C57.100-1986 Revision