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Fire resistant cable
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Fire Resistant Cable

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Fire resistant cable
A fire-resistant cable is a cable that occurs during combustion and still ensures that the line will operate normally for a certain period of time. The difference between this and the usual flame-retardant cable is that it can continue to deliver electrical energy in the event of a fire. Its fire resistance is in accordance with GB/T1 9666-2005 "General Rules for Flame Retardant and Fire Resistant Wire and Cable" and GA306.2-2007 "Classification and Requirements for Flame Retardant and Fire Resistant Cables of Flame Retardant and Fire Resistant Cables Part 2: Fire Resistant Cables". The use of this product will make fire safety and fire rescue capabilities more suitable for high-rise buildings, subways, power stations and other occasions.
使用特性:
1.额定电压Uo/U: 0.6/1KV及以下。
2.电缆敷设温度≥0°C。
3.电缆导体的最高额定温度:聚氯乙烯绝缘电缆为70"C:交联聚乙烯绝缘电缆为90°C。
4.短路时(最长持续时间不超过5s).电缆导体的最高温度:聚氯乙烯绝缘电缆为180"C:交联聚乙烯绝缘电缆为250°C。
5.电缆在额定电压下I、II、II、IV级处于750'C~ 800°C的火焰中,IA、IA、IIA IVA级处于950°C ~ 1000'C的火焰中,可持续90+15min(供火时间+冷却时间)的正常运行。
6.低烟无卤耐火电缆PH加权值> 4.3.电导率≤10μs/mm.烟气毒性指数≤5。
7.弯曲半径:同相应的普通型电缆。
主要电气性能:
同额定电压0. 6/1KV及以下的相应的普通电缆型号相同。耐火电缆系列产品:产品型号、名称
阻燃电线电缆的型号由产品燃烧特性代号和相关电线电缆型号两部分组成。
注:耐火电线电缆直接采用耐火系列代号加相关电线电缆的型号。
但下列代号意义扩展如下口
Y一聚乙烯或聚烯烃绝缘或护套
YJ一交联聚乙烯或交联聚烯烃绝缘或护套,
3一聚乙烯或聚烯烃外护套
4一交联聚乙烯或弹性体外护套
6一非磁性金属带铠装
7一非磁性金属丝铠装。
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