An unbalanced three-phase wye-connected and grounded load is connected to a balanced three- phase four-wire source. The load impedances Z, Z, and Z, are given as 70430°, 85L-40°, and 50 235° Q/phase, respectively, and the phase a line voltage has an effective value of 13.8 kV: use the line-to-neutral voltage of phase a as the reference and determine the following:

An unbalanced three-phase wye-connected and grounded load is connected to a balanced three- phase four-wire source. The load impedances Z, Z, and Z, are given as 70430°, 85L-40°, and 50 235° Q/phase, respectively, and the phase a line voltage has an effective value of 13.8 kV: use the line-to-neutral voltage of phase a as the reference and determine the following:

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 3.22P: A balanced Y-connected voltage source with Eag=2770volts is applied to a balanced-Y load in parallel...

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1. Calculate the line currents for phase a, b and c.2. Calculate the line-to-neutral voltages at the load for phase a, b and c.3. Draw the phasor diagram of the source line-to-neutral voltages and line currents.
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