BS-EN-50464-4 Complete Document History
Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV

Complete Current Edition:
   2007/A1 EDITION - 2007 EDITION/AMENDMENT 1 INTERFILED - Dec. 1, 2011

Obsolete Revision Information:
   2007 EDITION - HIGHEST VOLTAGE FOR EQUIPMENT NOT EXCEEDING 36 KV, REQUIREME - Aug. 31, 2007