Synthetic esters in online DGA

Power Generation and Transmission

Synthetic esters are increasingly chosen for power transformers as insulation liquid. They present both unique benefits and challenges, which anyone involved in transformer condition monitoring and Dissolved Gas Analysis (DGA) should be aware of.

Join our expert webinar on the intricacies of online DGA monitoring of ester fluids by signing the form to the right. 


Key takeaways from the webinar:

  • Unique properties and benefits of ester liquids 
  • Challenges for DGA monitoring
  • Ester compatibility for the Optimus™ OPT100 online DGA monitor
  • An expert Q&A session


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Senja Leivo

Meet the expert: Senja Leivo

Senja is the Senior Industry Expert at Vaisala, specializing in the condition monitoring of power transformers. With 25 years of international industrial experience, she plays a crucial role in integrating customer feedback into R&D. She’s been a key contributor to the development of Vaisala’s multi-gas DGA monitor.

An experienced speaker at industry conferences, Senja actively engages in international research collaborations, e.g. CIGRE and IEC working groups, and other initiatives focused on transformer condition assessment.

Toni Mellin, Application Manager

Meet the expert: Toni Mellin

Toni Mellin is an Application Manager and an expert in online DGA and continuous online moisture in oil monitoring applications. An active member in CIGRE IEC TC10, MT20 and MT22, working on the IEC standards 60422, 60475, 60567 & 60599, he is also the author and co-author of numerous publications presented at CIGRE and CIRED. Toni has also been deeply involved with the development of prototype DGA monitors which evolved into the groundbreaking Vaisala Optimus™ OPT100.