Consider a bank of three single-phase two-winding transformers whose high-voltage terminals are connected to a three-phase, $13.8-\mathrm{kV}$ feeder. The low-voltage terminals are connected to a three-phase substation load rated 2.4 MVA and $2.3 \mathrm{kV}$. Determine the required voltage, current, and MVA ratings of both windings of each transformer, when the high-voltage/low-voltage windings are connected (a) $\mathrm{Y}-\Delta$, (b) $\Delta-\mathrm{Y}$, (c) $\mathrm{Y}-\mathrm{Y}$, and (d) $\Delta-\Delta$.

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The Answer of Consider a bank of three single-phase two-winding transformers whose high-voltage terminals are connected to a three-phase, $13.8-\mathrm{kV}$ feeder. The low-voltage terminals are connected to a three-phase substation load rated 2.4 MVA and $2.3 \mathrm{kV}$. Determine the required voltage, current, and MVA ratings of both windings of each transformer, when the high-voltage/low-voltage windings are connected (a) $\mathrm{Y}-\Delta$, (b) $\Delta-\mathrm{Y}$, (c) $\mathrm{Y}-\mathrm{Y}$, and (d) $\Delta-\Delta$.

Consider a Bank of Three Single-Phase Two-Winding Transformers Whose High-Voltage 13.8−kV13.8-\mathrm{kV}13.8−kV

Consider a Bank of Three Single-Phase Two-Winding Transformers Whose High-Voltage $13.8-\mathrm{kV}$