Transformer post-mortem analysis

When a transformer is permanently removed from service and scrapped, the opportunity arises to perform a detailed and destructive examination. Not only give such direct measurements the most conclusive results regarding the condition of the transformer, being able to inspect the internal parts makes it possible to capture valuable information on its design and construction as well. Working Group A2.45 developed a systematic approach and a structured procedure for performing a transformer post-mortem analysis. This brochure provides a comprehensive overview of the tasks involved, outlines important theoretical aspects and offers practical considerations/guidelines.