Ungrounded Wye Distribution
Ungrounded Wye Distribution
(OP)
So I overheard some people from another utility saying that they have ungrounded wye on their distribution system. They also mentioned having to order special transformers and incorrect tap ratios on the transformers resulting in poor voltage to customers. I am interested in learning more, but have not been able to find much helpful information thus far. Can anyone tell me more about how an ungrounded wye system works? If there is no neutral for a return path for fault current, does this pose a danger to line workers?






RE: Ungrounded Wye Distribution
RE: Ungrounded Wye Distribution
If the neutral is carried out, (4 wire system) it should be insulated for line to line neutral voltage and the phase wires must be insulated for line to line voltage rather than line to neutral voltage. That would be spending extra money to get incur extra issues.
But, what David says, more information please.
Bill
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