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Analysis of Investigation and Approval of Several Sides of Transformer Partial Discharge and Exchange

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  Variable-potential multi-terminal measurement The so-called variable-potential multi-terminal measurement is mainly used to determine whether the partial discharge site is coil-to-ground or inside the coil.Because in these two wiring situations,UU14 two-phase support and one-phase wiring remain unchanged.The latter is much lower than the former,so if the partial discharge data before and after are basically the same,the possibility of partial discharge at the end is greater.If the partial discharge data changes before and after,the partial discharge is at the coil The interior(especially between turns,cakes,and floors)is more likely.

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