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A 100MVA, 400 delta / 11Y kV, 3-phase transformer has Z(eq) = 0.02+j0.05 ohm per phase...

A 100MVA, 400 delta / 11Y kV, 3-phase transformer has Z(eq) = 0.02+j0.05 ohm per phase referred to the low-voltage side, and R(c) = 1800 ohm per phase referred to the high-voltage side. If the transformer supplies rated voltage at full load at 0.8 power factor lagging.

Determine its voltage regulation and efficiency.

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Manojponduru answered 1 year ago
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