The formula to calculate the Transformer Impedance Percentage (I) is:
\[ I = \left( \frac{\text{SCV}}{\text{RV}} \right) \times 100 \]
Where:
Transformer impedance percentage is defined as the ratio of the injected voltage to the rated voltage. The rated voltage can be the secondary short condition. It is an important parameter in transformer design and operation, affecting voltage regulation and fault current levels.
Let's consider an example:
Using the formula to calculate the Transformer Impedance Percentage:
\[ I = \left( \frac{500}{10000} \right) \times 100 = 5 \, \% \]
This demonstrates that with a short circuit voltage of 500 Volts and a rated voltage of 10000 Volts, the transformer impedance percentage would be 5%.
