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IEEE C57.12.90-2021

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IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers

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Revision Standard - Active. Methods for performing tests specified in IEEE Std C57.12.00(TM) and other standards applicable to liquid-immersed distribution, power, and regulating transformers are described. Instrument transformers, step-voltage and induction voltage regulators, arc furnace transformers, rectifier transformers, specialty transformers, grounding transformers, and mine transformers are excluded. Resistance measurements, polarity and phase-relation tests, ratio tests, no-load loss and excitation current measurements, impedance and load loss measurements, dielectric tests, temperature tests, short-circuit tests, audible sound level measurements, and calculated data are covered in this standard.
This standard describes methods for performing tests specified in IEEE Std C57.12.00(TM) and other standards applicable to liquid-immersed distribution, power, and regulating transformers. It is intended for use as a basis for performance and proper testing of such transformers. This standard applies to all liquid-immersed transformers, except instrument transformers, step-voltage and induction voltage regulators, arc furnace transformers, rectifier transformers, specialty transformers, grounding transformers, and mine transformers. Transformer requirements and specific test criteria are not a part of this standard, but they are contained in appropriate standards, such as IEEE Std C57.12.00, IEEE Std C57.12.10(TM), IEEE Std C57.12.20(TM), and IEEE Std C57.12.40(TM), or in user specifications.
The purpose of this standard is to provide test procedure information for tests specified in IEEE Std C57.12.00 and other standards applicable to liquid-immersed distribution, power, and regulating transformers. It is intended for use as a basis for performance and proper testing of such transformers.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C57.12.90
Publication Date Feb. 4, 2022
Language en - English
Page Count 119
Revision Level
Supercedes
Committee Transformers
Publish Date Document Id Type View
Feb. 4, 2022 C57.12.90-2021 Revision
March 11, 2016 C57.12.90-2015 Revision
Oct. 15, 2010 C57.12.90-2010 Revision
Feb. 15, 2007 C57.12.90-2006 Revision
Dec. 30, 1999 C57.12.90-1999 Revision
Dec. 31, 1993 C57.12.90-1993 Revision
April 1, 1988 C57.12.90-1987 Revision