LEADER 02213nam 2200373 450 001 996279557303316 005 20231206190634.0 010 $a0-7381-4297-2 024 7 $a10.1109/IEEESTD.1988.86183 035 $a(CKB)3780000000089302 035 $a(NjHacI)993780000000089302 035 $a(EXLCZ)993780000000089302 100 $a20231206d1988 uy 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aANSI/IEEE Std C57.12.90-1987 $eIEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers and IEEE Guide for Short-Circuit Testing of Distribution and Power Transformers /$fInstitute of Electrical and Electronics Engineers 210 1$aNew York, New York :$cIEEE,$d1988. 215 $a1 online resource (80 pages) 330 $aSuperseded 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. 517 $aANSI/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 606 $aElectric transformers$xTesting 606 $aShort circuits 615 0$aElectric transformers$xTesting. 615 0$aShort circuits. 676 $a621.31922 801 0$bNjHacI 801 1$bNjHacl 906 $aDOCUMENT 912 $a996279557303316 996 $aANSI$92072434 997 $aUNISA