explain how short circuit test is carried out on a power transformer?

A short circuit test on a power transformer is conducted to determine its impedance and losses under short-circuit conditions. The primary winding is connected to a power source while the secondary winding is shorted. The input voltage is gradually increased until the rated current flows in the primary. Measurements of the input voltage, current, and power are taken. This data helps calculate the transformer’s impedance and copper losses, essential for performance evaluation.