The power rating of a transformer is in Volt-amps rather watts, why is
that
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Copper losses (I²R) depends on current which passing through transformer winding while Iron losses or core losses or Insulation losses depends on Voltage. ... That's why the transformer rating may be expressed in VA or kVA, not in W or kW.
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The power rating of a transformer is in Volt-amps rather watts, why is that?
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