(a) In a 3-phase balanced system shown in Figure 3(b), two wattmeters are used to measure the power across the delta-connected loads supplied with 15A line current. (i) Calculate the phase current, phase voltage and line voltage. (ii) Compute the readings of wattmeters, Wi and W2. (iii) Analyze the total power of the system. W LA Zi VBA Z3 = Z1= Z2= -j5N IB Z2 VCB Ic W2 Figure Q3(b)

(a) In a 3-phase balanced system shown in Figure 3(b), two wattmeters are used to measure the power across the delta-connected loads supplied with 15A line current. (i) Calculate the phase current, phase voltage and line voltage. (ii) Compute the readings of wattmeters, Wi and W2. (iii) Analyze the total power of the system. W LA Zi VBA Z3 = Z1= Z2= -j5N IB Z2 VCB Ic W2 Figure Q3(b)

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.23P: Figure 3.32 shows the oneline diagram of a three-phase power system. By selecting a common base of...

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