A single-phase transformer rated 2400 – 277 V, 50 kVA, 60 Hz is tested with the following results: Open-Circuit Test: 277V, 4.51 A, 735 w. Short-Circuit Test: 51.4V, 19.6 A, 368 w. Determine the followings; 20. The series equivalent impedance referred to the HV side (ohms). 21. The series equivalent impedance in per-unit. 22. The magnetizing branch impedances referred to the LV side (ohms).

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Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.