Tests on electric and optical fibre cables under fire conditions—Part 34:Test for vertical flame spread of vertically-mounted bunched wires or cables—Category B
IDT IEC 60332-3-23:2000
全国电线电缆标准化技术委员会
GB/T 18380的第31、32、33、34、35、36部分规定了一种试验方法，用来评价垂直安装的成束电线电缆或光缆在规定条件下抑制火焰垂直蔓延的能力。
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