Transformer Sizing Calculator
I = S / (√3 V)
Instructions
Enter transformer kVA and primary/secondary voltages for a three-phase transformer. Click Calculate.
Formula
I = S / (√3 V)
Common Questions
Single-phase case?
For single-phase, I = S/V. This tool uses three-phase √3 relation.
Does PF matter?
Current sizing by kVA is independent of PF, which affects kW not VA.