Phase to phase voltages are :484v,485v,484v.
We also had sampled the transformer oil and had it analyzed. The results came back with no internal transformer problems.
I know that this problem has just risen in the past few weeks. We have been having soft start motor starters fault out with this phase imbalance. I just can't put my finger on what is causing this imbalance. Over the weekend with nothing running, the phase imbalance is still showing up on...
I have a 12470 pri wye - 480v sec delta transformer bank consisting of (3) 333kva pole mount transformers. With lite load we have a small amperage imbalance. While the load increases, the amperage imbalance gets worse. By looking at the recordings taken, it looks like a capacitance issue. I...