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IEEE C57.100-1999

Historical Revision

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

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Revision Standard - Superseded. A test procedure is established to provide a uniform method for investigating the effect of operating temperature on the life expectancy of liquid-immersed transformers. The test proce-dures 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 com-parative evaluation of a proposed insulation system with reference to a system that has proven to be acceptable in service.
The procedure is intended to provide a direct evaluation of the composite insulation system of either a power or distribution, liquid immersed transformer.
The purpose is to establish a uniform method for investigating the effect of operating temperature on the life expectancy of liquid-immersed power and distribution transformers.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.100
Publication Date Oct. 7, 1999
Language en - English
Page Count 17
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