The formula to calculate the Voltage Imbalance (VI) is:
\[ VI = \frac{Vmd}{Va} \times 100 \]
Where:
A voltage imbalance is a measure of the relative deviation from the average voltage that a system sees during operation. The larger the deviation, the larger the imbalance.
Let's say the maximum deviation from the average voltage (Vmd) is 5 volts, and the average voltage (Va) is 120 volts. Using the formula:
\[ VI = \frac{5}{120} \times 100 \approx 4.17\% \]
So, the Voltage Imbalance (VI) is approximately 4.17%.