Transformer Radio Test

The transformer turn ratio is the number of turns in the high voltage winding divided by the number of turns in the low voltage winding. This ratio is also equal to the rated phase voltage of the high voltage winding being measured divided by the rated phase voltage of the low voltage winding being measured.

Transformer turns ratio measurements are best made with specialized instruments that include detailed connection and operating instructions. The measured turns ratio should be within 0.5% of the calculated turns ratio. Ratios outside this limit may be the result of winding damage, which has shorted or opened some winding turns.

Application includes: Transformers, Current and Voltage Transformers