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51问答网 > 防火电线和阻燃电线防火等级有什么区别

防火电线和阻燃电线防火等级有什么区别

2025-04-07 02:41:09

推荐回答（2个）

回答1：

防火电缆是要在950度-1000度火焰中通电3情况下燃烧3A熔丝不断。耐火电缆是要在750度-800度火焰中通电3情况下燃烧3A熔丝不断。结构区别防火电缆结构要达到在950度-1000度火焰中通电3情况下燃烧3A熔丝不断，绝缘必须用无机矿物或用更好的绝缘材料。耐火电缆通常就用云母带绝缘。

回答2：

没区别，防火就是阻燃，离火灭

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