5. A Y-connected balanced three-phase generator with an impedance of 0.4 + 70.3 A2 per phase is connected to a Y-connect

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5 A Y Connected Balanced Three Phase Generator With An Impedance Of 0 4 70 3 A2 Per Phase Is Connected To A Y Connect 1 (41.85 KiB) Viewed 61 times

5. A Y-connected balanced three-phase generator with an impedance of 0.4 + 70.3 A2 per phase is connected to a Y-connected balanced load with an impedance of 24 + |192 per phase. The line joining the gen- erator and the load has an impedance of 0.6 + 10.79 per phase. Assuming a positive sequence for the source voltages and that Van 120/30° V, find: (a) the line voltages, (b) the line currents. Answer: (a) 207.85/60°V, 207.85/ -60° V, 207.85/-180° V, (b) 3.75/-8.66° A, 3.75/-128.66° A, 3.75/-111.34º A. 6. A balanced abc-sequence Y-connected source with Van = 100/10° V is connected to a A-connected balanced load (8 + j4) N per phase. Cal- culate the phase and line currents. 7. One line voltage of a balanced Y-connected source is = 240/ -20° V. If the source is connected to a A-connected load of 20/40°, find the phase and line currents. Assume the abc sequence. Answer: 12/60° A. 12/ - 180° A, 12/60° A, 20.79/_90°A, 20.79/-150° A, 20.79/30° A.