Classification of environmental conditions -- Part 2-1: Environmental conditions appearing in nature - Temperature and Humidity (IEC 60721-2-1:2013) (english version)
Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2: Design, construction, testing, marking and documentation; German version EN 378-2:2016— 88 стр.
Medium power transformers 50 Hz, with highest voltage for equipment not exceeding 36 kV - Part 1: General requirements; German version EN 50588-1:2015— 32 стр.
Medium power transformers 50 Hz, with highest voltage for equipment not exceeding 36 kV - Part 1: General requirements; German version EN 50588-1:2017— 37 стр.
Medium power transformers 50 Hz, with highest voltage for equipment not exceeding 36 kV - Part 1: General requirements; German version EN 50588-1:2017— 37 стр.
