A balanced Y-connected loa?

A balanced Y-connected loa?

A balanced Y-connected load is connected at the end of a three phase generator as
shown in Figure Q1. The line impedance is Zline = 0.12 + j0.09 ?. The total power to
the balanced load is 6912 Watts and the phase voltage at the load is 120 Volts. Using
the single phase equivalent circuit, calculate:
(a) The phase current at the load, Ia
(b) The generator phase voltage, EAN and the generator line voltage, EBC.
Notes: i) Assume positive sequences and select ‘Van’ at the load as reference.
ii) All the answers must be in polar form (magnitude and angle) and in 2 decimal
places.

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1 Comment for A balanced Y-connected loa?

  • 1. im  |  November 22nd, 2010 at 9:12 pm

    You’d have better luck posting this in the Engineering section. However, model the load on each phase as resistive (balanced load, yeah, so power is constant), and include the line impedances coming and going as part of the series circuit. The three phases are identical, so the solutions differ only by the phase. The rest is arithmetic.
    m

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