This standard serves as the parent document for the entire IEC 61869 series. While it covers universal requirements, specific types of transformers (like current or voltage transformers) are governed by combining this Part 1 with a "Specific Product Standard".
Explicitly covers equipment for applications above 1 kV AC or 1.5 kV DC. New Test Classifications: Reclassifies certain "special tests" as type tests routine tests , and introduces a new clause for commissioning tests Digital Interface Integration: