A three phase transformer has a nameplate rating of 30 MVA, 230Y/69Y kV with a leakage -reactance of 10% and the transformer connection is wye-wye. Choosing a base of 30MVA and 230 kV on high voltage side, the transformer reactance referred to the low voltage side will be _______(in ohms).

Correct Answer: 15.87 Ω
X Ω = Xpu*Xb(LV) = 0.1*158.87 = 15.87 Ω.