?-Y Transformation Example
Balanced 3-φ system with the line voltage of 866 V, the frequency of 60 Hz, and with Y - connected source feeds ?-connected load with the impendence of 174 - j249 Ω. Line impedance is 2 + j3 Ω and phase sequence is positive. Determine per-phase circuit, the line and phase currents, power absorbed by load, and power dissipated by load, and power dissipated by transmission.