Transformer oil is subjected to electrical stress, and this stress can cause oil breakdown creating the gases within the transformer oil. GE single gas DGA can track the percentage of a single gas, mainly hydrogen, within the oil and can alarm the customer about the health of the transformer in case of excessive hydrogen detection. One of the ways is to periodically test the transformer oil by taking on-site samples, but some of the catastrophic actions can build up within a short period, causing severe damage to the transformer. EPESOL's provided monitoring devices continuously monitor and evaluate the oil condition and indicates any abnormality, saving transformers from permanent damage.