The Leakage Reactance of a Three-Phase, 500 -MVA $345 \mathrm{Y} / 23 \Delta$

Essay

The leakage reactance of a three-phase, 500 -MVA, $345 \mathrm{Y} / 23 \Delta$ -kV transformer is 0.09 per unit based on its own ratings. The $\mathrm{Y}$ winding has a solidly grounded neutral. Draw the per-unit equivalent circuit. Neglect the exciting admittance and assume American standard phase shift.