A Three-phase transformer is rated 400 MVA, and 220/22 (Wye-Delta) kV. The Wye equivalent short-circuit impedance...

Transcribed Image Text:

A Three-phase transformer is rated 400 MVA, and 220/22 (Wye-Delta) kV. The Wye equivalent short-circuit impedance measured on the low-voltage side of the transformer is 0.121 2. Determine the per unit impedance of the transformer and the per unit value to represent this transformer in a system whose base values on the high-voltage side is 100 MVA, 230 kV. A Three-phase transformer is rated 400 MVA, and 220/22 (Wye-Delta) kV. The Wye equivalent short-circuit impedance measured on the low-voltage side of the transformer is 0.121 2. Determine the per unit impedance of the transformer and the per unit value to represent this transformer in a system whose base values on the high-voltage side is 100 MVA, 230 kV.

Answer rating: 100% (QA)

To determine the per unit impedance of the transformer youll need to calculate it with re... View the full answer