electronicsIUST
Member level 3
Hello! I want to check voltage unbalance in a three phase system. I have used the below circuit for checking unbalance. But in normal operation that all three phase are approximately equal there is'nt zero voltage difference between points N and N'. I have near 5 Vrms in normal operation, while in some weeks ago there was near 0 voltage difference. Do anyone know what is the problem??
**broken link removed**
**broken link removed**