# Thread: Phase Imbalance

1. Regular Guest
Join Date
Apr 2006
Location
ontario
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4
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Somebody would know the formula for calculating phase imbalance!!!

2. Guest
Join Date
Apr 2005
Location
where the beer flows like wine
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2,869
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check this link http://www.welchnet.us/industrial/drivesandpower.html
there is plenty more over in the training and eduction forum http://www.hvac-talk.com/vbb/forumdi...=31&daysprune=

3. Professional Member
Join Date
May 2004
Posts
2,184
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Percent imbalance = maximum deviation from average /
average of three phases X 100%
Example:
1. As measured: Phase A = 449 A; Phase B = 470 A;
Phase C = 462 A
2. Calculate Average = (449 + 470 + 462) / 3 = 460 A
3. Calculate Max Deviation = 460 – 449 = 11 A
4. Calculate Imbalance = (11 / 460) x 100 % = 2.4 %

http://support.fluke.com/educators/d...161031_b_w.pdf

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