Drying of Transformers

On Demand: Moisture in Transformers
Power Generation and Transmission


Welcome to the newest episode of our popular Moisture in Transformers webinars hosted by Senja Leivo.

For this very special episode, we are really excited to welcome a highly experienced professional, Paul Köstinger of Retranol GmbH, as our co-host.

Previous webinars showed that there's a great demand for more knowledge. This episode will do exactly that. Join Senja & Paul, to learn everything that you ever wanted to know about the drying of transformers.

Key topics covered:

  • When is the right time to dry
  • How moisture affects transformer lifespans
  • The pros & cons of different drying methods
  • Which factors affect drying time
  • How to define the result 


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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.

Paul Köstinger portrait

Meet the expert: Paul Köstinger

Paul Köstinger has over 25 years of world-class professional experience in transformer drying and oil reclamation. His company, Retranol GmbH of Switzerland, provides low-frequency drying (LFH) and oil reclamation services on site, as well as repairs and training for LFH units around the world, among other consultation services. 

The owner of  Retranol GmbH, Paul actively contributes to the international power industry community, being active e.g. in the expert group for the revision of the IEC 60422 standard.

ebook with pages opened

Moisture in transformers Q&A eBook

The definitive eBook on the subject, this companion to our renowned webinar series is full of the latest practical and scientific advice on measuring moisture in power transformers.