Nameplate current conversion

Transformer Full-Load Current Calculator

Calculate primary and secondary full-load current from transformer kVA, phase and line voltage without selecting a transformer.

Enter your values

Example values demonstrate the method; they are not product recommendations.

Your result

Enter measured or nameplate values to calculate.

Method

Single-phase current = VA ÷ voltage. Balanced three-phase line current = VA ÷ (√3 × line-to-line voltage).

Important limits

Rated current is not a protection or fault-current calculation. Impedance, vector group, inrush, harmonics, cooling and installation rules are excluded.

Technical reference