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一、用途Application
隔火层阻燃控制电缆适用于450/750V和600/1000V以及以下的控制线路中。隔火层阻燃电缆特别适用于机场、地铁、港口、隧道、电站、宾馆、剧院、电视塔、石油化工、高层建筑等对电缆阻燃要求较高的主要场所。
Flame retardant contro1 cables with fire separating layer are used for rated vo1tages 450/750V and 600/1000V, ac, as control lines. Flame retardant cables with fire separating layer are especially suitable for use in airport, subway, seaport，tunnel, power station, hotel, theatre, TV tower, petrochemical industry and high-rise buildings where flame retardancy of cable is highly required．
二．隔火层阻燃电缆的特点
Characteristics of flame retardant cables with fire separating layer
1．对烟粒有明显的沉降作用。
Remarkable deposition of smoke particles．
2．对烟气有较好的吸附作用。
Good absorption of smoke． |
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3．烧损量小。
Small burned cable portion
4．自熄性能。
Self-extinguishing performance．
5．燃烧时酸气释放量低。
Low emission of acid gas in combustion．
三、型号、名称 (见表1-1)
Type and designation (Table 1-1)
四、主要技术性能
Main technical performance
1．成品电缆的阻燃性能符合IEC 332-3 A类的规定。
For finished cables, the flame retardancy meet the requirements of IEC 332-3，category A．
2．隔火层阻燃电缆的隔火层采用绕包隔火阻燃包带，并配以矿物绝缘填充材料进行填充，因此隔火层阻燃电缆具有较好的弯曲性能。
The fire separating layer is made by wrapping flame retardant cables with fire separating tape having good bending performance． |
