IEC 61034:2005（GB／T 17651）在规定条件下的电缆燃烧烟密度测量
IEC 61034:2005 (GB/T 17651) Measurement of smoke density of cables burning under defined conditions
IEC 61034:2005 (GB/T 17651)：空调在温度（23±5）°C至少16小时之前测试。
IEC 61034:2005 (GB/T 17651)样品要求：
when cable diameter overrall 5 mm, the gross sample = 1.00 m ×N1，and the N1 value refered to the left table / 当电缆直径大于等于5mm时，样品总量与若干根1.00m的试样组成，根数按照右边表格计算
when cable diameter less than 5 mm, but not less than 1 mm, the gross sample = 7×1.00 m ×N2，and the N2 value refered to the left formulae / 当电缆直径小于5mm, 不小于1mm时，样品总量与若干束1.00m的试样组成，束数按照右边公式计算
N2＝45/3D
或者简单的按照下面要求送样
diameter＞10mm 10m
5＜diameter≤10mm 20m
diameter＜5mm 120m
测试周期: 标准(5个工作天), 加快(3 个工作天).