IEC 60332-3-21返回 Back
Test item 测试名称： 
Tests on electric and optical fibre cables under fire conditions Part 3-21:Test for vertical flame spread of vertically-mounted bunched wires or cables – Category A F/R
着火条件下电缆的试验 第3-21部分:垂直安装的成束电线或电缆的垂直火焰蔓延的试验 种类A F/R
Test info 测试内容： 
Test Clause Requirement
　
conditioning conditioned at a temperature of (20 ± 10) °C for at least 16 h before commencing the test.
Sample Required:
每根长度不少于3.5m，所需根数按照下式计算。总样品数量=n×3.5(m) 。
n=1000V/(S－Sm);  n为试件根数;  S为电缆截面积，mm2;  Sm为导体截面积，mm2;  A类V取7.0; B类V取3.5;   C类V取1.5;   D类V取0.5    (请按上式计算)
　
Turnaround time: normal (9 working days)
所需时间 :标准(9 个工作天)

 
Sample for reference 参考图片:

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Sample Report 报告样本：
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