During a short-circuit test on a transformer rated 500 kVA, 69 kV/4.16 kV, 60 Hz, the following voltage, current, and power measurements were made. Terminals X _{1}, X _{2} were in short-circuit (see Fig. 28):
\begin{aligned}E_{ sc } &=2600 V \\I_{ sc } &=4 A \\P_{ sc } &=2400 W\end{aligned}
Calculate the value of the reactance and resistance of the transformer, referred to the HV side.