DIN EN 50306-4:2020
轨道交通. 具有特殊防火性能的铁路机车车辆电缆. 薄壁. 第4部分: 多芯和多对屏蔽或非屏蔽护套电缆; 德文版 EN 50306-4-2020
Railway applications - Railway rolling stock cables having special fire performance - Thin wall - Part 4: Multicore and multipair screened or not screened sheathed cables; German version EN 50306-4:2020