Van Problem 4 A balanced wye-connected three-phase source has line-to-line of 25 kVrms and it is applied to a wye-connected load, each arm of which consists of a 0.6 k resistance in series with a +j 1.2 kn as show in the figure below. Find: a) The voltages Van, Vbn, and Vcn. b) The magnitude and the phase angle of each line current: IaA, IbB, and Icc. c) The magnitude and the phase angle associated with each phase current of the load: IAN, IBN, and ICN- d) The voltages across each impedance of the load: VAN, VBN, and VCN. e) The power delivered to the load and the power lost in the line. f) The reactive power associated to the line and to each phase of the load. Vab= 25√2 20° kV O Ven Von Vhc25V2 Z-120⁰ kV Vca 25√2 2120° kV " 1aA IbB Lec 60 Ω +j45 Ω M0000 60 Ω +j45 Ω W 0000 60 52 +j45 Ω W 0000 C IBN + VRN ZY Zy ICN Zy VCN + VAN Zy = 0,6 kΩ + j 1.2 ΚΩ AN

Van Problem 4 A balanced wye-connected three-phase source has line-to-line of 25 kVrms and it is applied to a wye-connected load, each arm of which consists of a 0.6 k resistance in series with a +j 1.2 kn as show in the figure below. Find: a) The voltages Van, Vbn, and Vcn. b) The magnitude and the phase angle of each line current: IaA, IbB, and Icc. c) The magnitude and the phase angle associated with each phase current of the load: IAN, IBN, and ICN- d) The voltages across each impedance of the load: VAN, VBN, and VCN. e) The power delivered to the load and the power lost in the line. f) The reactive power associated to the line and to each phase of the load. Vab= 25√2 20° kV O Ven Von Vhc25V2 Z-120⁰ kV Vca 25√2 2120° kV " 1aA IbB Lec 60 Ω +j45 Ω M0000 60 Ω +j45 Ω W 0000 60 52 +j45 Ω W 0000 C IBN + VRN ZY Zy ICN Zy VCN + VAN Zy = 0,6 kΩ + j 1.2 ΚΩ AN

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.45P: Two balanced Y-connected loads, one drawing 10 kW at 0.8 power factor lagging and the other IS kW at...

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Two balanced Y-connected loads, one drawing 10 kW at 0.8 power factor lagging and the other IS kW at 0.9 power factor leading, are connected in parallel and supplied by a balanced three-phase Y-connected, 480-V source. (a) Determine the source current. (b) If the load neutrals are connected to the source neutral by a zero-ohm neutral wire through an ammeter, what will the ammeter read?
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