a) Circuit diagram
Transformer B
Transformer A
b) Line and phase values of voltages and currents and turns ratios
Voltages;
V4 = 415 V
Vph4 = 240 V
V3 = 3300 V
Vph3 = 1905 V
V1 = 11000 V
Vph1 = 6350 V
Turn ratios;
Transformer A = 13.75
Transformer B = 3.33
Currents;
I4 = 800 A
Iph4 = I4 = 800 A
Iph3 = 58.2 A
I2 = I3 = = * 58.2 = 100.8 A
Iph2 = I2 = 100.8 A
Iph1 = 30.2 A
I1 = Iph1 = 30.2 A
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