A 3-phase motor is connected to a voltage of 400 V and has a power of 50 kW at full load. When the engine is running at full load, it is delta connected, while at start-up it is star connected. a) Calculate the phase voltage and phase current when running at full load. b) Calculate the phase voltage and phase current at start-up. c) We suspect that one of the supply lines to the motor has been broken. Draw the form for the break in both the delta and star cases. ..

A 3-phase motor is connected to a voltage of 400 V and has a power of 50 kW at full load. When the engine is running at full load, it is delta connected, while at start-up it is star connected. a) Calculate the phase voltage and phase current when running at full load. b) Calculate the phase voltage and phase current at start-up. c) We suspect that one of the supply lines to the motor has been broken. Draw the form for the break in both the delta and star cases. ..

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

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.6P

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