Question About This Three Phase Circuit Analysis Problem!!

[ndekens]

Well I have started studying again........ and I have a question on this problem. (see attached PDF)

In the equivalent Single Phase circuit why did they not add in the impedance of the Neutral line (1+j0.01)? Is this an error on the page or did they do this for a reason?

Thanks!

Power_prob.pdf

 

[Flyer_PE]

Since the system is balanced, the current through the neutral will be 0. It can be any impedance between 0 and infinity and not affect the answer. The only time a neutral current will come into play in a circuit like this is if you are dealing with an unbalanced system.

 

[ndekens]

Since the system is balanced, the current through the neutral will be 0. It can be any impedance between 0 and infinity and not affect the answer. The only time a neutral current will come into play in a circuit like this is if you are dealing with an unbalanced system.

your a genius!!!!! Thanks!