Why the tapings are placed on HV side?

Why the tapings are placed on HV side?
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1 Answer

Answer :

1.A fine voltage regulation is possible with hV side as it has large number of turns.
2.LV side carries large current
3. HV side is placed outside so its feasible
4. In case of step down transformer at light loads the HV side voltage increases, it is required to decrease this voltage by adjusting tappings on HV . With large no. of turns the flux and flux density decreases. Hence core losses decreases results in higher efficiency.
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