DIN 42508
DIN 42508 Transformers - Oil-immersed power transformers from 3150 kVA up to 80000 kVA and U<(Index)m> up to 123 kV
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 08/01/2009
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 08/01/2009