DIN EN 62621:2017
轨道交通.固定设施.电力牵引.用于架空接触线系统的复合绝缘子的具体要求(IEC 62621-2011);德文版本EN 62621-2016
Railway applications - Fixed installations - Electric traction - Specific requirements for composite insulators used for overhead contact line systems (IEC 62621:2011); German version EN 62621:2016