IEC 60331-31. Tests for electric cables under fire conditions. Circuit integrity. Part 31. Procedures and requirements for fire with shock. Cables of rated voltage up to and including 0,6/1,0 kV
IEC 60331-31 着火条件下电缆的试验 电路完整性 第31部分 冲击火灾的程序和要求 额定电压0.6/1.0 kV及以下的电缆