低烟无卤阻燃耐火

低烟无(低)卤阻燃、耐火电线电缆

Low-smoke no(low)-halogen flame retardatory

fire resistance wire & cable

1 产品使用场所的分级及选用Grade and choose for the using location

1.1低烟无(低)卤使用场所应根据建筑物的使用特性、火灾危险性、疏散和扑救难度等分为特级、一级、二级、三级，并符合表1-1规定。

Low-smoke free/low-halogen types divides into four kinds, special class, first class, second class, third class according to the using property, fire damage and evacuation & extinguishment difficulty. Meanwhile, it also complies with the requirement of Table 1-1.

续表1-1 Extend table 1-1

1.2 低烟无(低)卤电线电缆成束敷设时，应采用阻燃电线电缆，阻燃级别选择应符合表1-2、1-3，在外部火势作用下，需保持线路完整性、维持通电的场所，其线路应采用耐火电线电缆。

When they are laying in colligation, the low-smoke free/low-halogen wires and cables should be flame-retardancy types whose grades comply with Table 1-2 and Table 1-3. If the location needs integrated lines and constant electricity under the outside fire, they should be fire resistance types.

电线的阻燃级别选择

表1-3 电缆的阻燃级别选择

2. 2 产品技术性能Technical property

2.1 电线电缆导体正常运行时的最高温度及短路时（最长持续时间不超过5s）最高温度：

The maximum temperature of the normal operating cable conductor or short circuit

(should not persist for 5 seconds):

交联聚乙烯绝缘为90℃，热塑性低烟无卤聚烯烃绝缘为80℃，短路时最高温度不超过250℃；

90℃for XLPE insulated type, 80℃for thermoplastic low-smoke low-halogen

polyolefin insulated type, and not more than 250℃as short circuit;

辐照交联型聚乙烯绝缘为105℃，短路时最高温度不超过250℃。

105℃for irradiated cross-linked PE insulated type, and not more than 250℃as short circuit.

2 低烟无(低)卤电缆的安装条件及允许连续载流量均与相应非低烟无(低)卤型号规格电缆电线相同。

The installation conditions and allowable constant carrying capacity of the low-smoke

free/low-halogen cables are as same as the corresponding non-free/low-halogen ones.

2.3 电缆电线在燃烧时具有低烟、无卤、阻燃和耐火性能，具体指标如表1-4。

The cables have the properties of low smoke, free halogen, flame retardancy and fire

resistance. The detail sees Table 1-4.

表1-4 Table 1-4