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 \(\Delta\), place the polarity marks, and label the terminals \ (a, b\), and \(c\) in accordance with the American standard.

(b) Relabel the terminals \(a^{\prime}, b^{\prime}\), and \(c^{\prime}\) such that \(V_{A N}\) is \(90^{\circ}\) out of phase with \(V_{a^{\prime} n}\) for positive sequence.

Transcribed Image Text:

Ic +B Imnd Land Imm DE H J H.