DIN 42500-1/A1:1996 Three-phase oil-immersed distribution transformers 50 Hz, 50 up to 2500 kVA - Part 1: General requirements and requirements for transformers Um up to 24 kV; Amendment A1:1995-03; German version HD 428.1 S1/A1:1995
2016DIN EN 50588-1:2016 Medium power transformers 50 Hz, with highest voltage for equipment not exceeding 36 kV - Part 1: General requirements; German version EN 50588-1:2015
2012DIN EN 50464-1:2012 Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Part 1: General requirements; German version EN 50464-1:2007 + A1:2012
2007DIN EN 50464-1:2007 Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV - Part 1: General requirements; German version EN 50464-1:2007
1993DIN 42500-1:1993 Three-phase oil-immersed distribution transformers 50 Hz, 50 up to 2500 kVA; general requirements and requirements for transformers U<(Index)m> up to 24 kV; German version HD 428.1 S1:1992