What is the DGA test of transformer oil, and where can I find a PDF about it?

The DGA test of transformer oil, or Dissolved Gas Analysis, is a diagnostic method used to assess the condition of transformer oil by measuring the concentration of gases dissolved in it. This test helps identify potential faults within the transformer, such as overheating or arcing. You can find a PDF about the DGA test of transformer oil on various electrical engineering websites, industry publications, or standards organizations like IEEE or IEC.