Monitoring Gas Generation in Transformers

This paper provides information concerning the monitoring and diagnosis of hot metal gases, with special attention given to the detection of hydrogen. Though hydrogen is a superior indicator of incipient faults due to its generation through all temperature zones over 150°C, the detection and analysis of hydrogen levels can be quite erratic. The theories set forth in this paper, offer an examination of hydrogen's physical reactions within the main tank of a transformer which can lead to this erratic and often misleading behavior.