Question
Download Solution PDFNon-reactive loads of 10 kW, 8 kW and 5 kW are connected between the neutral and the red, yellow, and blue phases, respectively, of a 3- phase, 4-wire system. The line voltage is 400 V. Calculate the current IR.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCalculation:
The circuit diagram given in the question is of star connected network with a neutral.
It is asked to find the Current IR.
From the diagram given, it is quite clear that the IR current flows between "R" and the neutral N.
The load connected across it is given as 10 KW.
From the diagram, the voltage across 10 KW load will be equals to the phase voltage, i.e, voltage between phase "R" and the neutran "N".
For star connection, the phase voltage is equals to the line voltage divided by square root of 3.
Current IR = \(\frac{10\ kW}{(\frac{400}{\sqrt3}) \ V} \)
= 43.3 A
Last updated on Jun 16, 2025
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