Three-phas? .oil-immersed distribution transformers 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not excee- ding 36 kV. Part 1: General requirements and requirements for transformers with highest voltage for equipment not exceeding 24 kV
Zpracovatel: Energoprojekt a. s., Praha, I?O 45273898, Ing. Jaroslav Bárta, Technická normaliza?ní komise: TNK 97 Elekt?oenergetika Pracovník ?eského normaliza?ního institutu: Ing. Vincent Csirik