02215nam 2200373 450 991013576950332120231206190634.00-7381-4297-210.1109/IEEESTD.1988.86183(CKB)3780000000089302(NjHacI)993780000000089302(EXLCZ)99378000000008930220231206d1988 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierANSI/IEEE Std C57.12.90-1987 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers and IEEE Guide for Short-Circuit Testing of Distribution and Power Transformers /Institute of Electrical and Electronics EngineersNew York, New York :IEEE,1988.1 online resource (80 pages)Superseded by C57.12.90-1987. Methods for performing tests specified in IEEE Std C57.12.00-1993, IEEE Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers, 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. This standard covers resistance measurement, polarity and phase-relation tests, ratio tests, no-load-loss and excitation current measurements, impedance and loadloss measurements, dielectric tests, temperature tests, short-circuit tests, and audible-sound-level measurements.ANSI/IEEE Std C57.12.90-1987: IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers and IEEE Guide for Short-Circuit Testing of Distribution and Power TransformersElectric transformersTestingShort circuitsElectric transformersTesting.Short circuits.621.31922NjHacINjHaclDOCUMENT9910135769503321ANSI2072434UNINA