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why t/f are rated in kva. is it conserned with p.f.
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Answer Posted / amit rajak
The transformer is rated in KVA because its efficiency
actully depends on its losses.
and it is known that there are two main types of losses
that occurs in transformer.
They are as follows.
1.iron losses oer hysterisis losses
or Electromagnetic losses
2.copper losses or eddy current losses.
1. iron losses- it generrally occurs at the
windings that is made of copper as conductor and are under
operation . at all the loads and are rated in current
losses.
2. voltage losses-these losses generally occours at
all the time whether at load or not load conditions
so it is clear that this to parameters current and voltage
decides the overall efficiency of the transformers.
and also as the transformers deals with the poiwer in kilos
so it is rated in kilo volt amperes
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