Safety of transformers, reactors, power supply units and combinations thereof - Part 2-20: Particular requirements and tests for small reactors (IEC 61558-2-20:2010); German version EN 61558-2-20:2011
变压器、电抗器、电源装置及其组合的安全 第2-20部分:小型电抗器的特殊要求和试验(IEC 61558-2-20-2010);德文版EN 61558-2-20:2011