BH GSO IEC 60076-21:2017
IEC 60076-21:2011
Bahraini Standard
Historical
·
Approved on
21 June 2017
Power transformer – part 21 : standards requirements , terminology , and test code for step –voltage regulators
BH GSO IEC 60076-21:2017 Files
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BH GSO IEC 60076-21:2017 Scope
IEC 60076-21:2011/IEEE Std C57.15:2009 - Description of design types, tables of 50 Hz and 60 Hz ratings, supplementary ratings, construction, and available accessories are provided. Methods for performing routine and design tests applicable to liquid-immersed single and three-phase step-voltage regulators are described. Winding resistance measurements, polarity tests, insulation power factor and resistance tests, ratio tests, no load loss and excitation current measurements, impedance and load loss measurements, dielectric tests, temperature tests, routine and design impulse tests, short-circuit tests, control tests, calculated data, and certified test data are covered.
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