Phase voltages from line voltages calculations

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Calculating phase voltages from line voltages in an unbalanced 3-phase system can be achieved using voltage-phase vectors, especially when the nature of the imbalance is known. Understanding the specific imbalance is crucial, as it affects the calculations. Adding new loads can further shift the existing imbalance, complicating the analysis. Accurate calculations require careful consideration of all loads in the system. Properly addressing these factors ensures more reliable phase voltage determinations.
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How can we calculate phase voltages from the line voltages when the 3-phase system is unbalanced?
 
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If you know what the imbalance is, you can use the voltage-phase vectors to figure that out. Of course, if the imbalance is due to other loads out of balance, adding a new load will shift the imbalance around.
 
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