An unbalanced, three-phase, three-wire, star-connected load is supplied from a balanced three-phase source at 380 V,50 Hz. The phase sequence impedances of the load are the following:
Za =17.5 ∠ - 34.2°Ω ; Zb=13.9 ∠ 68.15° Ω ; Zc =14.2 ∠ - 49.7° Ω
Take Eab as a reference, with a phase sequence of ACB.
Use Millman’s theorem and determine the phase voltage (Ic) of the load in polar form.
The answer to your question is provided in the image:
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