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What is Percentage Impedance in Transformers Explained about?

The percentage impedance of a transformer is the voltage drop at full load expressed as a percentage of rated voltage. It is calculated by applying a voltage to one winding to produce rated current in the other short-circuited winding. Lower impedance increases short circuit current but improves voltage regulation, so the value is carefully selected for each transformer.

Author

Engr saqib

Language

EN