Introduction to DGA interpretation and tools

Understanding dissolved gas analysis (DGA) is essential for assessing transformer health and detecting incipient faults before they lead to costly failures. This webinar provides a high‑level introduction to the principles behind DGA interpretation, including trending analysis and the most common diagnostic frameworks referenced in the industry (e.g. IEC 60599 and IEEE C57.104). 

Key takeaways:

• Available analysis and interpretation methods
• How these methods support condition assessment and early fault detection.
• Tools for DGA analysis, ratios, Duval triangles and pentagons 
• Real-world cases and lessons learned
• Introduction to the newly updated Vaisala DGA Calculator, and how you can use it to visualize gas trending and better understand the industry-accepted diagnostic methods.

In detail

Whether you are new to transformer diagnostics or looking to refresh your knowledge, this session offers a clear and accessible introduction to DGA and the tools that help make analysis more intuitive and reliable.

In addition to reviewing foundational concepts, the webinar explores available analysis and interpretation methods, and how they support condition assessment and early fault detection. The range of tools available to support DGA analysis—from traditional ratio‑based methods to the more graphical tool of Duval triangles and pentagons. Real-world cases where continuous, online DGA monitoring aided in decision making around transformer maintenance requirements, including when to safely extend operation and when to schedule a replacement. The Vaisala DGA Calculator, a free tool that helps users explore interpretation techniques, visualize gas trending scenarios and better understand industry-accepted diagnostic methods. Newly expanded features, from full support for laboratory data import and export and support for alternative insulating fluids will also be covered.