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Answer Posted / 7anoter4
Transformer losses are winding losses[copper or aluminum
conductor losses] Pcu and steel
laminate core losses Pfe Ptot=Pcu+Pfe
If you would know the resistance per phase at working
temperature[R] you could calculate winding losses
Pcu=n*Irat^2*R [n=no.of phases;Irat=transformer rated
current].
In order to calculate laminate core losses you need to know:
unit losses of the steel laminate[w/lb or w/kg],total core
weight [lb or kg].
Pfe=[w/lb]*weight[lb].
In order to state the unit losses[from Manufacturer
Catalogue] you'll need magnetic flux density[B[wb/m^2 or
gauss/inch^2] and the current frequency[50 Hz or 60 c/sec].
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