yes sir, we open 1-phase only of the feeder and we didn't take any measurement because we have to re-energize the line asap so we only assume that the line were unbalanced but we are conducting investigation for our report the possible cause of the over voltage because there some damages...
good day sir, i believe there are no motor loads in the area or any significant big loads to possibly creates a unbalance loads. it happens when 1-disconnecting switch opened.
What is the probable cause of overvoltage in three phase secondary distribution line? Is it Possible to have an unbalance voltage in secondary distribution line? How do we solve this?
Situation: 1-disconnecting switch of a three phase transformer bank has been open in Primary distribution line...