Neutral current

  • #1
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Main Question or Discussion Point

How to culculate neutral current in three phase system with unbalance load?
 

Answers and Replies

  • #2
dlgoff
Science Advisor
Gold Member
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For balanced loading on a 3-phase, 4-wire wye system like this,

810ecmBTBfig1.jpg

the vector diagram would looks like this:

810ecmBTBfig2.jpg


Now follow this Basics of Vector Analysis.

Now for unbalanced loading on a 3-phase, say like this,

811ecmBTBfig1.jpg


the vector diagram would look like this, since there's no C Phase (definitely unbalanced :D):

811ecmBTBfig2.jpg


Now follow this Vector Analysis.

Good Luck
 

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