What is TDCG in transformer oil analysis?

TDCG, or Total Dissolved Combustible Gases, in transformer oil analysis refers to the measurement of all combustible gases dissolved in the oil, which are indicative of potential insulation breakdown or overheating within the transformer. Analyzing TDCG helps in diagnosing the health of the transformer, as elevated levels can signal issues such as arcing or thermal degradation. Regular monitoring of TDCG is essential for effective maintenance and risk management in transformer operations.