- Copper losses can be minimized by the use of greater diameter of the conductor wire and winding material with better resistivity.
- Casually choosing the thickness, increases eddy currents. In this regard, sectionalisation is preferred in order to reduce the radial thickness to decrease eddy currents.
- Winding turns are properly built up taking care of transportation and mechanical strength required insulation.
- Use of copper in place of aluminium makes resistivity less. Current flowing through wires encounters less resistance in copper than aluminium for the same diameter.
So use of copper causes,
- Less electrical losses which produce undesirable heat.
- Reduced transformer full load losses and allow smaller cores.
- Reduced no-load losses.
