EN 50464-4-2007 最高压不超过36 kV的设备用50 Hz,50 kVA至2500 kVA的三相油浸式配电变压器.第4部分:有关增压式波形槽的要求和试验
Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2 500 kVA with highest voltage for equipment not exceeding 36 kV - Part 4: Requirements and tests concerning pressurised corrugated tanks (Incorporates Amendment A1: 2011)