A 90 MVA 11 kV3-phase generator has a reactance of 25%. The generator supplies two motors...

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A 90 MVA 11 kV3-phase generator has a reactance of 25%. The generator supplies two motors through transformers and transmission line as shown in Fig. 3.5. The transformer T, is a 3-phase transformer, 100 MVA, 10/132 kV, 6% reactance. The transformer T, is composed of 3 single phase units each rated at 30 MVA, 66/10 kV with 5% reactance. The connections of T, T, are as shown. The motors are rated at 50 MVA and 40 MVA both 10 kV and 20% reactance. Taking the generator rating as base, draw reactance diagram and indicate the reactances in per unit. The reactance of line is 100 ohms: (M) T2 Line AY (M2 Fig. 3.5 A 90 MVA 11 kV3-phase generator has a reactance of 25%. The generator supplies two motors through transformers and transmission line as shown in Fig. 3.5. The transformer T, is a 3-phase transformer, 100 MVA, 10/132 kV, 6% reactance. The transformer T, is composed of 3 single phase units each rated at 30 MVA, 66/10 kV with 5% reactance. The connections of T, T, are as shown. The motors are rated at 50 MVA and 40 MVA both 10 kV and 20% reactance. Taking the generator rating as base, draw reactance diagram and indicate the reactances in per unit. The reactance of line is 100 ohms: (M) T2 Line AY (M2 Fig. 3.5

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