IEEE/IEC C57.15-2017 IEEE/IEC International Standard- Power transformers - Part 21: Standard requirements, terminology, and test code for step-voltage regulators
Institute of Electrical and Electronics Engineers (IEEE)
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IEEE/IEC C57.15-2017
IEEE/IEC C57.15-2017 history
1970IEEE/IEC C57.15-2017 IEEE/IEC International Standard- Power transformers - Part 21: Standard requirements, terminology, and test code for step-voltage regulators