A 30-kVA, 8000/230-V distribution transformer has impedance referred to the primary of 20 + j100 N. The components of the excitation branch referred to the primary side are Rc = 100 kN and Xm = 20 kQ. (a) Draw the approximated equivalent referred to the primary side. (b) If the primary voltage is 7967 V and the load impedance is ZL = 2.0 +j0.7 N, what is the secondary terminal voltage of the transformer? What is the voltage regulation of the transformer? (c) If the load is disconnected and a capacitor of -j3.0 Q is connected in its place, what is the secondary voltage of the transformer? What is the voltage regulation under these conditions?

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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.