Most Common Gases Detected by a Dissolved Gas Analyser
A Dissolved Gas Analyser (DGA) is critical in evaluating the health and performance of oil-filled electrical equipment, particularly transformers. It detects dissolved gases in transformer oil, which might indicate probable flaws and degradation in the equipment. By analyzing the type and concentration of these gases, a Dissolved Gas Analyser can provide early warning signs of malfunctions, allowing for preventive maintenance before serious issues occur. This article will explore the common gases detected by a Dissolved Gas Analyser and what their presence may indicate in terms of transformer health. Types of Gases Detected By a Dissolved Gas Analyser Hydrogen (H₂) A Dissolved Gas Analyser can measure hydrogen, which is one of the most significant gases. It is a key indicator of a variety of transformer faults. The presence of hydrogen in transformer oil is typically associated with electrical discharges, such as partial discharge (low energy electrical fault) or arcing (high-ene...