Line voltage from balanced real power calculator

Required line-to-line voltage is calculated as 1000 × P / (sqrt(3) × I × PF). Use the stated system boundary and matching input units.

V_{\text{LL}} = \frac{1000 \times P}{\sqrt{3} \times I \times \mathrm{PF}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

V_{\text{LL}} = \frac{1000 \times 100}{\sqrt{3} \times 50 \times 0.8} \approx 1{,}443

Symbol	Meaning	Unit
$V_{\text{LL}}$	required line-to-line voltage	V
$P$	balanced real input power	kW
$I$	line current	A
$\mathrm{PF}$	combined power factor	—

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.