Transformers

Transformer sizing and fault-analysis calculators: full-load current on primary and secondary, standard kVA sizing, and secondary short-circuit current from nameplate %Z, with and without source impedance.

Transformer Sizing & Full-Load Current Calculator

Primary and secondary full-load current from transformer kVA rating, plus the nearest standard size.

Transformer Impedance & Short-Circuit Current Calculator

Symmetrical, peak, and RMS asymmetrical secondary fault current from transformer %Z and X/R ratio.