What is the voltage imbalance of a three-phase circuit with voltages of 610V, 611V, and 596V?

To determine the voltage imbalance in a three-phase circuit, you first find the average voltage and then calculate the imbalance as a percentage based on the deviation of each phase voltage from this average.

1. Calculate the Average Voltage:

Add all three phase voltages together and divide by three. In this case:

(610V + 611V + 596V) / 3 = 605.67V

2. Calculate the Voltage Deviation:

Next, calculate the absolute deviation of each phase voltage from the average:

• For 610V: |610 - 605.67| = 4.33V

• For 611V: |611 - 605.67| = 5.33V

• For 596V: |596 - 605.67| = 9.67V

3. Find the Maximum Deviation:

The maximum voltage deviation from the average is 9.67V (from the 596V phase).

4. Calculate the Voltage Imbalance Percentage:

The percentage imbalance is found by comparing the maximum deviation to the average voltage:

(Maximum Deviation / Average Voltage) ×