EN 61558-2-14:2013 变压器、电抗器、电源装置及其组合的安全性 第 2-14 部分:可变变压器和装有可变变压器的电源装置的特殊要求和试验
Safety of transformers, reactors, power supply units and combination thereof - Part 2-14: Particular requirements and tests for variable transformers and power supply units incorporating variable transformers