Coupon Accepted Successfully!


Solved Problems-20

A symmetrical 440V, 3-phase system supplies a star-connected load. The branch impedances are Description: 7021.png. Assuming the neutral of the supply to be earthed, calculate the voltage to earth of the star point. Assume the phase sequence RYB.
Here, line voltages are,
Description: 7000.png
∴ Phase voltages are
Description: 7031.png
Phase admittances are,
Description: 7037.png
By Millman’s theorem, the voltage of the load star point with respect to earth is,
Description: 7043.png 

Test Your Skills Now!
Take a Quiz now
Reviewer Name