IEC 61558-2-13-2009
電壓<1100 V用變壓器、電抗器、電源裝置及類似設備的安全性.第2-13部分:自動變壓器用專用要求和并入自動變壓器的電源裝置
Safety of transformers, reactors, power supply units and similar products for voltages up to 1100 V - Part 2-13: Particular requirements and tests for auto transformers and power supply units incorporating auto transformers