Indicative Benchmarks
ANNEX IVSupplementary provisions
ANNEX IV Indicative Benchmarks At the time of adoption of this Regulation, the best available technology on the market for medium power transformers was identified as follows: (a) Liquid-immersed medium power transformers: A o – 20 %, A k – 20 % (b) Dry-type medium power transformers: A o – 20 %, A k – 20 % (c) Medium power transformers with amorphous steel core: A o – 50 %, A k – 50 % The availability of material to manufacture transformers with amorphous steel core needs further development, before such values of losses can be considered to become minimum requirements in the future.