Based on the analysis of a case of transformer fault and bringing forward solution

analyzing chromatogram of transformer oil was introduced to looking for the reason of transformer fault. The method can be used for diagnosing and analyzing running transformer regularly

which not only have great economic benefits

but high precision and better reliability. To determine internal fault of transformer through chromatogram analysis and to find out the solution has real meaning for making analysis

judgment and how to repair fault transformer on site through chromatogram analysis of transformer oil.