Question

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Ouestion 5: Three two-winding transformers are grounded Y-A connected to 230 kV on the Y-side and to 34.5 kV on the A-side. The combined three-phase rating of these transformers is 500 MVA. The per-unit reactance is 13% on the basis of the transformer rating. Calculate the rated values of voltage and currents, and Xps and Xsp (in ) in following figures Is Zpa.(M) + Пр n, (а) 1n Zap() V Пр п, (b)