Gas Chromatograph for Analyzing
Transformer uses oil as coolant and insulator. Gases are formed within the transformer oil due to natural aging, faults from oxidation, vaporization, oil breakdown, electrolytic action or insulation decomposition. Because the transformer oil bathes each internal component, dissolved gases in the transformer oil contain lots of diagnostic information. Meanwhile, the transformer is very expensive to be replaced, so monitoring these gases is very important to know the current quality of transformer or even when the transformer should be removed from service before failure. Presence of each gas composition and its concentration indicates possible failure of transformer.