The TRANSFIX™ DGA 500 is an on-line monitoring unit that measures individual dissolved gas and moisture and provides both on-line monitoring and key exploratory diagnostics. It uses well known PAS technology (Photo Acoustic Spectroscopy) made popular due to its accuracy, repeatability and lack of consumable through its bigger brother the Kelman™ DGA 900.

When a transformer’s insulation system is overstressed, gases are produced that dissolve in the transformer’s insulating oil. Dissolved Gas-in-oil Analysis (DGA) and moisture measurements are recognized as the most important tests for condition assessment of transformers and the best early indicators of developing fault.

All types of incipient faults are covered by the monitoring of hydrogen gas levels. Slowly eroding paper faults can be exposed through the monitoring of carbon monoxide. Various degrees of thermal faults, including arcing, can be detected and identified, often leading to a transformer repair rather than a costly transformer rebuild.

In particular, the TRANSFIX DGA 500 enables well known Duval’s triangle DGA diagnostic and various other diagnostic tools mentioned in IEC Standard 60599 and ASTM 3612. It uses the value of 3 gases (Acetylene, Ethylene and Methane) and is suitable for identifying various degrees/temperature of thermal faults as well as the presence of high-energy electrical discharge faults