A workshop from a 231/400 V transformer center with a 3-phase and four-conductor underground cable fed. The resistance of the phase conductors is 0.035 ohms and the resistance of the neutral conductors is 0.05 ohms. 25 kVA at 0.8 reverse power factor from R phase of the supply line, 0.8 forward power factor from S phase 15 Fully ohmic loads of 10 kVA are drawn from kVA and T phases. (a) Find the currents flowing through the phase conductors and neutral conductors. (b) Voltage drops between the transformer substation and the workshop and at the load terminals. calculate the voltages (c) Plot the supply line currents and phase voltages phasorally.

A workshop from a 231/400 V transformer center with a 3-phase and four-conductor underground cable fed. The resistance of the phase conductors is 0.035 ohms and the resistance of the neutral conductors is 0.05 ohms. 25 kVA at 0.8 reverse power factor from R phase of the supply line, 0.8 forward power factor from S phase 15 Fully ohmic loads of 10 kVA are drawn from kVA and T phases. (a) Find the currents flowing through the phase conductors and neutral conductors. (b) Voltage drops between the transformer substation and the workshop and at the load terminals. calculate the voltages (c) Plot the supply line currents and phase voltages phasorally.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.26P: A bank of three single-phase transformers, each rated 30MVA,38.1/3.81kV, are connected in Y- with a...

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