Power transformers - Additional European requirements - Part 2-6: Medium power transformers - Non-conventional magnetic steel technology
Edition 2023-03-29

Power transformers - Additional European requirements: Part 3-1 Large power transformer - General requirements
Edition 2020-12-16

Power transformers - Additional European requirements - Part 3-4: Large power transformer - Special tests for corrugated tank and radiators
Edition 2023-03-29

Connecting terminal flags for bushings from 250 A to 4000 A for insulating liquid filled transformers (Endorsed by Asociación Española de Normalización in April of 2024.)
Edition 2024-04-01

Power transformers - Part 1: General
Edition 2013-12-23

Power transformers - Part 2: Temperature rise for liquid-immersed transformers
Edition 2013-04-30

Power transformers - Part 3: Insulation levels, dielectric tests and external clearances in air
Edition 2014-07-09

Power transformers - Part 3: Insulation levels, dielectric tests and external clearances in air
Edition 2018-09-19

Power transformers - Part 4: Guide to the lightning impulse and switching impulse testing - Power transformers and reactors
Edition 2005-10-13

Power transformers - Part 5: Ability to withstand short-circuit
Edition 2008-06-11