Tests on electric and optical fibre cables under fire conditions—Part 33:Test for vertical flame spread of vertically-mounted bunched wires or cables—Category A
IDT IEC 60332-3-22:2000
全国电线电缆标准化技术委员会
GB/T 18380的本部分适用于A类，电缆安装在试验钢梯上以使总体积中试样所含非金属材料为7 L/m。供火时间为40 min。电缆安装在钢梯前面，导体截面大于35 mm2的电缆根据电缆试样段数量使用标准钢梯或宽型钢梯，导体截面35 mm2及以下的电缆使用标准钢梯。A类用于评定高非金属材料体积含量的场合。
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