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3.15 IMPEDANCE VOLT AT RATED CURRENT& FREQUENCY AT 75˚C3.16 REACTANCE AT RATED CURRENT &FREQENCY3.17 Insulation levela) Full wave lighting impulse withstandsvoltage HV winding.b) Rated short duration power frequencywithstand voltage3.18 EFFICIENCIES AT 75˚CAt unity power factora) at full loadb) at ¾ full loadc) ½ full load3.19 ELECTRIC STRENGTHOF INSULATING OIL ( NEW UNFILTERED )MIN.3.20 REGULATION AT FULL-LOADAT 75˚Ca) At unity power factorb) At 0.8 power factor lagging3.21 ENVIRONMENTAL CONDITIONSa) Max. ambient air temp.b) Relative Humidityc) Altitude above MSL3.22 PROTECTION OF TRANSFORMER3.23 TERMINAL ARRANGEMENTa) H.V. windingb) L.V. windingDesktop/tenderxmer /750kva/AHMD/MUM//PANJIPage 50 of 64