GB 19212.14-2012
电源电压为1 100V及以下的变压器、电抗器、电源装置和类似产品的安全.第14部分:自耦变压器和内装自耦变压器的电源装置的特殊要求和试验
Safety of transformers,reactors,power supply units and similar products for supply voltages up to 1100V.Part 14:Particular requirements and tests for auto transformers and power supply units incorporating auto transformers