Three houses in a small village are supplied from a 400 V 50 Hz three-phase pole-mounted transformer through a four-wire overhead line. Each house is connected between a different line and neutral. Unfortunately, the neutral wire in the overhead line is accidently broken just after the transformer and before the house connections. Given that the house on line 1 has a 10.5 kW shower running, the house on line 2 has a 2.5 kW cooker oven switched on and the house on line 3 is using a 2 kW electric kettle, what voltage will each house receive?

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 3.54P: An infinite bus, which is a constant voltage source, is connected to the primary of the...
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Three houses in a small village are supplied from a 400 V 50 Hz three-phase pole-mounted transformer through a four-wire overhead line. Each house is connected between a different line and neutral. Unfortunately, the neutral wire in the overhead line is accidently broken just after the transformer and before the house connections. Given that the house on line 1 has a 10.5 kW shower running, the house on line 2 has a 2.5 kW cooker oven switched on and the house on line 3 is using a 2 kW electric kettle, what voltage will each house receive?

 

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