In this lesson from the Transformers Academy, the presenter takes the participants through a detailed session on visual examination and functional testing for power transformers. The session emphasizes the importance of thorough inspections, where even the smallest details can have significant consequences. Key topics include safety protocols, the importance of using all senses during inspections, and tools like infrared imaging and ultrasonic devices for diagnostics. Participants learn about issues such as oil leaks, battery conditions, and identifying problems in control cabinets, transformers, and substations. The presenter also explains techniques such as the "flashlight trick" for identifying sulfation in batteries and discusses the importance of proper oil sampling and cooling system checks. The session provides insights into functional testing of cooling systems, the importance of inspecting control cabinets for loose connections, animal damage, and misalignments in disconnects.
Transformer condition assessment
Master’s level
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Learn tips and tricks from the experienced professional. Mr. Giesecke shares his knowledge and some photos of findings that you may not ever see at your locations. In his own words: “Relaxed and informative is the style of the day.”
Attend the session to learn more about these details:
- How to approach a visual examination of a substation/transformer site
- What to look for and the hidden signs of trouble that you may not know
- Learn functional tests that you can do during the walk through and learn the valuable flashlight trick for flooded cell batteries
Keywords: grounding, gauges, rust, control cabinets, batteries




