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    E-lesson

    DGA Course –e-lesson #10: When should one recommend taking a transformer out of service

    DGA Course - e-lesson #10 image v2
    Course: Master’s level

    Hosted by: Marius Grisaru / Master's level

    This is the 10th lesson of the Dissolved gas analysis course conducted on the Master's level. It is created and hosted by Marius Grisaru. Here you can save your seat.

    This lesson provides an in-depth exploration of when to recommend taking a transformer out of service based on Dissolved Gas Analysis (DGA) results. The presenter, Marius Grisaru, discusses the main goals of DGA diagnosis, highlighting its advantages and limitations. Several real-world DGA case studies are examined, showcasing both successful and unsuccessful diagnoses. The importance of experienced DGA experts in accurate interpretation and decision-making is emphasized. The lesson also touches on the challenges of online DGA monitoring and the need for continuous research to improve DGA reliability. Attendees are invited to share their own cases for further discussion and expert opinion. Overall, this lesson aims to deepen understanding of DGA principles and best practices for transformer maintenance.

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    Main takeaways:

    1. Transformer fault severity from DGA evaluation, real cases avoid fault alarms and disconnected transformers
    just before the critical failure
    2. Total combustion gases – levels and trends versus fault severity; Advanced diagnostic approach emerging
    from particular individual experience

    About the author

    Marius Grisaru 300 x 300

    Marius Grisaru

    Electroanalytical chemist, expert on oil test domain focus on dissolved gas analysis from planning, sampling, testing to diagnosis. Marius has a vast worldwide experience on all relevant aspects and debates them among the fellow experts around the globe. Enthusiast educator of scientific subjects.

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