A three-phase generator connected in a star generates a phase
voltage of Vθ = 24 KVrms and supplies a
three-phase transformer connected in star. The transformation ratio
is 115: 1. Each of the
three coils of the secondary transformer feed 3 equal charges each
composed of
them by R = 18Ω, XC = 2Ω and XL = 20Ω.
a) Calculate the phase, line and charge currents after the
b) Calculate the phase, line and load voltages
c) Calculate the Apparent (S), Real (P) and Reactive (Q) powers
delivered by the transformer to the load
d) Calculate the power factor in each load and the power factor of
the entire system
e) Draw the phasor diagram that shows the "power triangle" of the
entire system
The solution for question a,b,c,d has been solved here. All the values in this solution are RMS values of corresponding variables.
A three-phase generator connected in a star generates a phase voltage of Vθ = 24 KVrms and supplies a three-phase transformer connected in star. The transformation ratio is 115: 1. Each of the three c...
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