DGA Fault Triangles

The DGA Fault Triangle is a widely used method for interpreting DGA (Dissolved gas analysis) results. It classifies transformer faults by comparing the relative concentrations of methane (CH₄), acetylene (C₂H₂), and ethylene (C₂H₄). We have 3 different types 1,4 and 5. Triangle 1 Method: Fault Diagnosis and Gas Analysis in Power Transformers , Triangle 4: Identifying Low-Energy Faults with Dissolved Gas Analysis , Triangle 5: Medium to High Energy Fault Identification. Also known as Duval Triangle.