EET-226 Lecture Notes - Lecture 3: Volt-Ampere, Three-Phase Electric Power, Phasor
Document Summary
Q 1: in a balanced three-phase y- system, the source has an abc phase sequence and. 0 120 40 van = v rms and is connected to a - connected load with impedance z = (24 + j18) The connecting lines between the source and the load have a line impedance of zline = (0. 5 + j0. 4) . Q2: each phase of a y-connected load consist of a non-reactive resistance of 100 in parallel with a capacitor of 31. 8 f. Calculate line current and power absorbed, total kva and power factor when connected to a 416 v (rms), 3-phase 50 hz supply. Q3: a balanced 3-phase abc sequence system with line-to-line voltage (rms) supplies a balanced delta connected load of 3 kw with a power factor of 0. 8 (lagging) through a lossless transmission line. [ia = 10. 41 angle(-66. 9 deg); ib = 10. 41 angle (173. 1 deg); ic = 10. 41 angle (53. 1 deg)]
