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耐火铜芯聚氯乙烯绝缘电线电缆 QB/YQ 18618-96
所谓耐火电线电缆，其结构和材料阻燃电线电缆不同，它可在长时间的燃烧过程中或燃烧后，即施加火焰处的高聚物材料被毁，也能够保证线路正常运行。
耐火电线电缆适用于高层建筑、油田、电站、电厂、矿山、化工厂、地铁等要求防火安全条件较高的场合，又是应急电源、消防泵、电梯、通讯信号系统的必备电缆。
Fire-resistant wire and cable are idfferent from
flame-retardant wire and calbe in construcier and material.The former
will operate normally during or after a long time fire ,even if
the polymer of the cable section on fire has been burned out.
This kind of wire and cable are used in high-rise buildings ,oil
fields ,power stations ,power plants ,mines chemical plants and
underg round railway and other places where fire-resistance cables
are required .At the same time thes are necessary to emergency supply,fire
pump elevator and commumication system.
型号及名称:
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型号
Types
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名称
Designations
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NH-VV
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铜芯聚氯乙烯绝缘聚氯乙烯护套耐火电力电缆
Copper-core fire-resistant power cable with PVC insulation
and sheath
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NH-VV22
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铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装耐火电力电缆
Copper-core fire-resistant power cable with insulation and
armoured steel tape
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NH-KVV22
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铜芯聚氯乙烯绝缘聚氯乙烯护套耐火控制电缆
Copper-core fire-resistant control cable with PVC insulation
and sheath
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NH-BV
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铜芯聚氯乙烯绝缘聚氯乙烯护套钢带铠装耐火控制电缆
Copper-core fire-resistant control cable with PVC insulation
and
sheath and armoured steel tape
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NH-BVV
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铜芯聚氯乙烯绝缘耐火电力电缆
Copper-core fire-resistant cable with PVC insulation
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NH-BVVB
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铜芯聚氯乙烯绝缘聚氯乙烯护套圆型耐火电缆
Copper-core fire-resistant cable with PVC insulation and sheath
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NH-BVVB
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铜芯聚氯乙烯绝缘聚氯乙烯护套平型耐火电缆（电线）
Copper-core fire-resistant rectangular calbe (wire)
with PVC insulation and sheath
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规格型号:
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电线及型号
Type
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电压等级v
Voltage class v
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规格截面mm2
Size area mm2
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标准
Standard
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NH-VV
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600/1000
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1-4芯cores
2.5-300
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等效采用IEC标准
To be equivalent to IEC standard
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HN-VV22
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NH-KVV
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450/750
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2-61芯cores
2.5-10
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NH-KVV22
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NH-BV
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450/750
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2.5-400
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NH-BVV
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1-5芯cores
2.5-10
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NH-BVVB
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2-3芯cores
2.5-35
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技术特性:
- 耐火电缆外径，截面在25mm2及以下者比普通同类型号产品的规格在15％，截面在25mm2以上者比同类型号产品的规格大25％
- 本产品的电气和物理机械性能与普通型同类产品相同
- 耐火电缆的载流量和类似型号的电缆相同
- 试验标准采用IEC331《电缆的耐火特性》
- 由于火灾发生时温度很高，采用铝导体不合适，因此耐火电缆导体材料均为铜。
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