What are copper losses by conductor

  • 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.

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