Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V -- Part 2-13: Particular requirements and tests for auto transformers and power supply units incorporating auto transformers
供电电压高达1100 V的变压器、电抗器、电源装置和类似产品的安全第2-13部分:自耦变压器和包含自耦变压器的电源装置的特殊要求和试验