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Electrical EngineeringQ&A LibraryA 200 – MVA, 15/200 kV single-phase power transformer has a per – unit resistance of 1.2 percent and a per-unit reactance of 5 percent (data taken from the transformer's nameplate). The magnetizing impedance is impedance is j80 per unit. Find the equivalent circuit referred to the low-voltage side of this transformer. Calculate the voltage regulation of this transformer for a full-load current at power factor of 0.8 lagging. Assume that the primary voltage of this transformer is a constant 15 kV. And plot the secondary voltage as a function of load current for currents from no load to full load. Repeat this process for power factors of 0.8 lagging, 1.0, and 0.8 leading.Start your trial now! First week only $4.99!*arrow_forward*

Question

A 200 – MVA, 15/200 kV single-phase power transformer has a per – unit resistance of 1.2

percent and a per-unit reactance of 5 percent (data taken from the transformer's nameplate).

The magnetizing impedance is impedance is *j80 *per unit.

- Find the equivalent circuit referred to the low-voltage side of this transformer.
- Calculate the voltage regulation of this transformer for a full-load current at power

factor of 0.8 lagging.

- Assume that the primary voltage of this transformer is a constant 15 kV. And plot the

secondary voltage as a function of load current for currents from no load to full load.

Repeat this process for power factors of 0.8 lagging, 1.0, and 0.8 leading.

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