Draft Document - Low voltage surge protective - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods (IEC 37A/234/CDV:2011); German version EN 61643-21:2001/FprA2:2011
文件草案-低压浪涌保护器-第21部分:连接到电信和信号网络的浪涌保护装置-性能要求和试验方法(IEC 37A/234/CDV:2011);德文版EN 61643-21:2001/FprA2:2011