DIN EN 50464-4-2007 最高压力不超过36kV的设备用50Hz、50kVA至2500kVA的三相油浸式配电变压器.第4部分:关于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; German version EN 50464-4:2007