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Condition assessment and monitoring of power transformers through oil analysis – Advanced

835.00 excl. VAT

Planned Course Data

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2 days (8h/day); 8.30AM-4.30PM CET


Steve Eeckoudt

Steve Eeckhoudt is a senior expert in the field of insulating and lubricating oils and of condition monitoring of power transformers and turbines. He has 20 years of experience within power industry and since 2010 Key Expert within the ENGIE group.

Kevin Devillé

Kevin Deville is a chemist, with technical expertise in transformer and lubricating oils, specializing in dissolved gas analysis, furanic compounds, and PCB analysis. Kevin is a member of IEC TC10 PT62701 Interfacial Tension, IEC Project Team 63012 and CIGRE JWG D1/A2.47.



The objective is to acquire the knowledge needed to define and implement an effective oil analysis programme, to monitor the condition of transformers and to understand oil analysis reports as part of a maintenance strategy.


The following issues will be covered during the training:

Condition monitoring of power transformers through oil analyses:

  • Transformer Health Index, Transformer Fleet Condition Assessment, Risk Matrix
  • Best practices
  • Which oil analyses/how frequent
  • DGA: focus on partial discharges, sparking, stray gassing, catalytic effects / interpretation systems.
  • Interpretation of results
  • Why and when to perform electrical measurements?
  • International standards: IEEE, IEC, Duval, ASTM, etc.
  • Maintenance guidelines
  • Trending and reporting
  • Sampling techniques

Use of online monitoring for DGA/water: implementation and real-case advantages etc.

  • New developments: importance of methanol as ageing marker, temperature correction of ageing markers, stray gassing of oils in service etc.
  • REX, case studies and real-case exercises concerning power transformers within generation and high-voltage grids.
  • Discussion of reports on power transformers.
  • Use of unused insulating transformer oils.
  • Market trends in the use of inhibited and uninhibited oils.
  • Differences, advantages and drawbacks of uninhibited compared with inhibited oils.
  • Importance of additives, oxidation stability tests, stray gassing, etc.

Target Audience

Maintenance staff, electrical engineers and asset managers responsible for transformers. Typical industries are powerplants, high voltage grids or large industrial sites.

Practical Info

Please note that the course will only take place if the minimum number of participants is acquired.

If you would like a dedicated session for your team, or if you want information on the possible dates for this course, please get in contact at

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