GOST R IEC 60331-21-2003 着火条件下电缆和光缆的测试.线路完整性.第21部分:流程与要求.额定电压为0.6/1.0 kV的电缆
Tests for electric and optical fibre cables under fire conditions. Circuit integrity. Part 21. Procedures and requirements. Cables of rated voltage up to and including 0,6/1,0 kV