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why transformer capacity is called KVA and motor capacity
is called HP/KW?
Why transformer capacity cant call HP/KVA?
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Answer Posted / saravanan.p
Transformer is a static device(no moving parts). The voltage transmission is through mutual inductance(M=L.dI/dt). So losses in transformers are meaning less.So the Power in transformers are mentioned in VA or KVA or MVA.
But in motors are having moving parts. so the inductive coil(Rotor or field)have lagging power factor. The phase difference between voltage and current is called power factor.
The losses in motors are very high compared with transformers. So in motor, the power is noted as KW.
(Note: 1HP=746 Watt or 0.746 KW)
ersaravananp@gmail.com
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