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  1. Default WYE-DELTA 13.2-4.8 KV ratio bank

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    Iím aware of the importance of the neutral float and tie down cut out. Iím been told that with the float closed, and one tub goes bad that the other two will be forced to try and compensate for the one that is not working. What I donít know is WHY. Why will this happen only when the float is closed in and not if it is open.

  2. #2

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    If I understand your question right, I believe it's all about circulating current and imbalance, with the 3rd phase out and the high side floated you have it due to imbalance with each pot grounded or the floater grounded it doesn't see the imbalance and is acting like an open delta , hence the reason to temporarily ground down the floating neutral on closed delta backs when energizing to combat ferroresence , an engineer could probably explain it better as this is just what I have always been told, I was also told there is a reason it is called Electric Theory and not Electric Fact.

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