| Test item 测试名称： | ||||
| 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 | ||||
| 电缆和光缆火焰条件下的燃烧试验 第34部分 垂直安装的成束电线电缆火焰垂直蔓延试验 B 类 | ||||
| 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:
>Sample Report 报告样本：
