for preparation of design note of 11 / 220 kV , 3 phase,
63 MVA transformer how can calculate or consider the iron
losses and copper losses
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Answer Posted / aamod tripathi
The Iron and copper losses are determined by tests only. It
is guaranteed parameter. If not met . the manufacturer has
to be imposed with a penalty calculated according to the
life of the transformer.
However as a thumb rule. 63 MVA transformer will have 1 -
2.5 % of no load + copper losses.
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