Consider the three single-phase two-winding transformers
Chapter , Problem 3.33(choose chapter or problem)
Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage windings are connected in Y. (a) For the low-voltage side, connect the windings in D, place the polarity marks, and label the terminals a, b, and c in accordance with the American standard. (b) Relabel the terminals a', b', and c' such that VAN is 9 out of phase with Va'n for positive sequence.
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