IEC 60076-15 pdf download Power transformers – Part 15: Gas-filled power transformers 1scope This standard applies to gas-filled power transformers (including auto-transformers). Thestandard applies to all construction technologies. This standard does not apply to single-phase transformers with rated power less than 1 kVA and three-phasetransformers less than 5 kVA; dry-type transformers (see lEC 60076-11);instrument transformers (see lEC 60044); starting transformers;...