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[欧洲|VDE] 2016线缆阻燃研讨会9-Fire Tests

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Fire Tests
EN 60332-1-2
Tests on electric and optical fibre cables under fire conditions -
Part 1-2: Test for vertical flame propagation for a single insulated wire or cable -
Procedure for 1 kW pre-mixed flame
-Determination of fire class 燃烧等级的评定
General test procedure
*  A cable sample (length 60cm) is fixed 60cm的样品
in a draught-free chamber.
*  A burner with a 1 kW-flame is applied to the sample at an angle of 45°
燃烧测试使用的是热功率为1千瓦的喷枪,喷枪与样品 成45°
*  Flame impingement: 1-8 minutes, depending on cable diameter 燃烧时间(1~8分钟)根据样品直径而定
*  Measuring parameter:
    H: charring length 炭化距离 image068.jpg

EN 61034-2
Measurement of smoke density of cables burning under defined conditions - 烟密度
Part 2: Test procedure and requirements
-Additional classification smoke production
额外等级:浓烟的产生

General test procedure
*  Cable samples (length 100cm) are fixed
    in a special 3x3x3 m? cube-type chamber above a fire bowl with burning alcohol(乙醇)
*  A light source is fixed on one side of the chamber 一个光源固定在燃烧室的一端
*  On the opposite side, the light intensity is measured 燃烧室另一端安装光强度感应装置
*  Measuring parameter:
*  Reduction of light intensity [in %], caused by developing smoke in the chamber 测量浓烟产生时光强度的衰减 %
image072.jpg
EN 50267-2-3
Common test methods for cables under fire conditions -
Tests on gases evolved during combustion of materials from cables -
Part 2-3: Procedures - Determination of degree of acidity of gases for cables by determination of the weighted average of pH and conductivity 酸性气体含量、PH 值
-Additional classification acidity
额外等级
In future replaced by:
EN 60754-2
with no significant difference regarding test procedure

General test procedure
*  One gram of the cable material to be tested is put in a furnace at ≥ 935°C
*  The developing exhaust gases are washed
*  The liquid is analyzed concerning conductivity and pH value
*  Measuring parameter:
-  Conductivity 导电率
-  pH value pH值
image076.jpg

QQ图片20170402235936.jpg


EN 13501-6 defines additional classifications
*  Additional classification smoke production (s1, s1a, s1b, s2, s3) 浓烟的产生
-  Requirements from test according to EN 50399
-  Additional requirements from smoke density test according to EN 61034-2
image081.gif

*  Additional classification flaming droplets / particles (d0, d1, d2) 飞沫、粒子
-  Requirements from test according to EN 50399
image083.gif

*  Additional classification acidity (a1, a2, a3) 酸性含量
-  Requirements from test according to EN 50267-2-3
-  Material test ! 材料测试
image085.gif

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