When does delta/star transformer work satisfactorily?

When does delta/star transformer work satisfactorily? Correct Answer On balanced as well as unbalanced loads

Large unbalanced/balanced loads can be handled satisfactory. The Y-D connection has no problem with third harmonic components due to circulating currents in D(delta). It is also more stable to unbalanced loads since the D partially redistributes any imbalance that occurs.
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