Consider a bank of three single phase two winding transformers whose high voltage terminals are connected to a three phase, 13 8 k V 13 8 k V feeder The low voltage terminals are connected to a three phase substation load rated 2 1 MVA and 2 3 k V 2 3 k V Determine the required voltage, current, an...

Consider a bank of three single-phase two-winding transformers whose high-voltage terminals are connected to a three-phase, 13.8

Question:

Consider a bank of three single-phase two-winding transformers whose high-voltage terminals are connected to a three-phase, $13.8 - k V$ feeder. The low-voltage terminals are connected to a three-phase substation load rated 2.1 MVA and $2.3 k V$ . Determine the required voltage, current, and MVA ratings of both windings of each transformer, when the high-voltage/low-voltage windings are connected (a) $Y - Δ$ , (b) $Δ - Y$ , (c) $Y - Y$ , and (d) $Δ - Δ$ .