Three parts of a single phase electric system are designated A, B and C and are...

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Three parts of a single phase electric system are designated A, B and C and are connected to each other through transformers, as shown in Fig. 2. The transformers are rated as follows. Note that the transformer reactances are given in percent; for example, 10% = 0.1 p.u. A-B 10,000 kVA, 13.8/138 kV, leakage reactance 10% B-C 10.000 kVA. 138/69 kV. leakage reactance 8% If the base in circuit B is chosen as 10,000 kVA, 138 kV, find the per unit reactance of both transformers and per unit impedance of the 300 resistive load in circuit C referred to circuits C, B and A. Draw the impedance diagram neglecting magnetizing current, transformer resistance and line impedance. A A-B B Fig. 2 B-C C 300 ohms Three parts of a single phase electric system are designated A, B and C and are connected to each other through transformers, as shown in Fig. 2. The transformers are rated as follows. Note that the transformer reactances are given in percent; for example, 10% = 0.1 p.u. A-B 10,000 kVA, 13.8/138 kV, leakage reactance 10% B-C 10.000 kVA. 138/69 kV. leakage reactance 8% If the base in circuit B is chosen as 10,000 kVA, 138 kV, find the per unit reactance of both transformers and per unit impedance of the 300 resistive load in circuit C referred to circuits C, B and A. Draw the impedance diagram neglecting magnetizing current, transformer resistance and line impedance. A A-B B Fig. 2 B-C C 300 ohms