变压器、电抗器、电源装置及其组合的安全 第14部分：一般用途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 combinations thereof—Part 14: Particular requirements and tests for auto-transformers and power supply units incorporating auto-transformers for general applications