Can anyone help me with this calculation, not sure what to take full load voltage here and the use of lagging,
A single phase transformer is rated at 10kVA, 7200V/600V. During a short circuit test performed from the secondary side, the following values were obtained: VSC = 36V, ISC = 5.0A, PSC = 60W.
What is the %VR for this transformer at 80% full load, 0.7 power factor lagging ?