Solar/Wind Inverter Duty transformer is meant for converting low voltage into high voltage and fed into a power grid. Thus this transformer is also known as Convertor Duty or Inverter Duty transformer. The transformer is designed in such a way that it can resist Harmonic currents caused by the rectifier/inverter. Also, a Copper static shield is provided earthen separately to resist radio frequent disturbance. For such transformers, the design is done with multiple winding, for example, three-winding or four-winding transformers which make 6 pulses and 12 pulses transformers. Maintaining proper mechanical and electrical properties is the crucial part of designing such a transformer ensuring good performance with the safety of all the electrical equipment.