Three Phase Power Calculation for 110V Line to Neutral—Does Formula Change?

Dear all

when calculating 3 phase balanced power 220V(Line to Neutral) the formula for Power is:
P=root(3) * V(line to Line) * I(Line)

but if the power source is having 110V(Line to Neutral) will the formula be the same or will the root(3) value change ?

Thank you

Hi,

I think it will be same.

Please check the below link:

1) http://ecmweb.com/basics/calculating-single-and-3-phase-parameters

2) http://ncalculators.com/electrical/kva-calculator.htm


Thanks

Amit

thanks for the quick reply

i checked the links, the 1st one i couldnt find anything

but 2nd link is a calulator so i am not sure i am getting proper answer

but the point i amtrying to make is that i have 110V-3 phase supply, but my loads will be 220V so i am using on the load side potential difference between the 2 voltages instead of using voltage to neutral so when i calculate my power consumption is same (as using 220V single) while it should be lower since i am using 110V instead of 220V on single line

is my calculation wrong ?

Hi,

Power consumption depends upon your load, either it is balanced or unbalanced. Since in 3 phase system phase plays a significant role. Check the below link, you will get some idea:

http://elearning.vtu.ac.in/e-con/EEE/html/0054.htm


Amit

yes very good page

i will tell you if i find solution

Thanx

check this page too


http://ece.k-state.edu/~starret/581/3phase.html