laA B A IbB Zb Za Va N VNn Vc Icc Load Network Generator Plant Figure 5 Three-phase, three-wire transmission system C.

Introductory Circuit Analysis (13th Edition)
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laA
A
a
IbB
Za
Va
VD
V Nn
Z.
Vc
Icc
Load Network
Generator Plant
Figure 5
Three-phase, three-wire transmission system
Transcribed Image Text:laA A a IbB Za Va VD V Nn Z. Vc Icc Load Network Generator Plant Figure 5 Three-phase, three-wire transmission system
A 400HZ three-phase, three-wire transmission network is shown in Figure 5. RMS
values for the voltage sources are given below in polar format.
V = 20VrmsZ0°
V = 20Vrms L-120°
V = 20Vrms Z120°
f = 400HZ
Impedance values for the Y-connected load network at 400HZ are given below.
Z, = (6+ j1)N
Z = (5+ j5)N
Z, =(3- j2)N
) (a) Calculate the value of the neutral-to-neutral voltage VNn expressed in rectangular
and polar format.
(b) Calculate values for -
the total complex power S in volt-amperes (VA),
the total average power Pavg in Watts,
the total reactive power Q in vars, and
the power factor pf.
Show your work and explain in detail all assumptions you make.
Transcribed Image Text:A 400HZ three-phase, three-wire transmission network is shown in Figure 5. RMS values for the voltage sources are given below in polar format. V = 20VrmsZ0° V = 20Vrms L-120° V = 20Vrms Z120° f = 400HZ Impedance values for the Y-connected load network at 400HZ are given below. Z, = (6+ j1)N Z = (5+ j5)N Z, =(3- j2)N ) (a) Calculate the value of the neutral-to-neutral voltage VNn expressed in rectangular and polar format. (b) Calculate values for - the total complex power S in volt-amperes (VA), the total average power Pavg in Watts, the total reactive power Q in vars, and the power factor pf. Show your work and explain in detail all assumptions you make.
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