in a balanced Y-connected three-phase generator, find the phase voltages, assuming the phase sequence is: (a) abc (b) acb
a) We have in abc phase sequence
Then we can write
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In a balanced three-phase system, the source is a balanced Y with an abc phase sequence and a line voltage Vab = 208 ∠50° V. The load is a balanced Y in parallel with a balanced .The phase impedance of the Y is 4 + j3 Ω/Φ and the phase impedance of the Δ is 3 - j9 Ω/Φ. The line impedance is 1.4 + j0.8 Ω/Φ. Draw the single phase equivalent circuit and use it to calculate the line voltage at the load in the a-phase.