Electrical Engineering ⇒ Topic : Voltages and Currents in Balanced Y-Connected Supply System
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Gaurav
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Voltages and Currents in Balanced Y-Connected Supply System Fig.(A) shows a balanced 3-phase, Y-connected supply system in which the r.m.s. values of the e.m.f.s generated in the three phases are ERN, EYN, EBN Since the supply system is balanced, these e.m.f.s will be equal in magnitude (say each equal to Eph, the phase voltage) but displaced 120° from one another as shown in the phasor diagram in Fig. (B). It is clear from the circuit diagram See Fig. (A) that p.d. between any two line terminals (i.e. line voltage) is the phasor difference between the potentials of these two terminals w.r.t. the neutral i.e. FIG . (A) FIG. (B) | |
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