Electrical Machines

Percentage Impedance of Transformer and Its Calculation

21/07/202626/05/2018 by Tesla

The percentage impedance ($\%Z$) of a transformer is one of the most vital figures stamped on the nameplate of every … Read morePercentage Impedance of Transformer and Its Calculation

Why Transformers are Rated in kVA, Not in kW? (With Proof)

16/07/202622/08/2014 by

Discover exactly why transformers are rated in kVA rather than kW. Learn how core and copper losses dictate a transformer’s thermal limit, explore the mathematical proof behind changing load power factors, and master this classic electrical engineering interview question.