DIN EN 50541-2:2014
最高電壓不超過36 kV的設備用100千伏安至3150千伏安, 50赫茲三相干式輸電變壓器. 第2部分: 帶非正弦電流負載變壓器載荷率的測定; 德文版本EN 50541-2-2013
Three phase dry-type distribution transformers 50 Hz, from 100 kVA to 3 150 kVA, with highest voltage for equipment not exceeding 36 kV - Part 2: Determination of loadability of a transformer loaded with non-sinusoidal current; German version EN 50541-2:2