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自TIA/EIA-568B标准发布以来,千兆布线系统已经开始使用,然而很多的设计商、承建商、用户在追求速度的同时,却忽视了一个潜在的设计漏洞——火险。大多数的用户对通信线缆的选择是基于电气性能要求,而线缆的防火等级要求往往被忽略。根据消防部门的统计,我国发生的火灾中,因电气引起的火灾占一半左右。而电气火灾中,由于电线电缆的老化和过载使用引起的火灾占很大比例。虽然强电线缆不能引发火灾,但发生火灾后,由于绝缘护套材料的可燃性,弱电线缆一旦卷入火灾,火势蔓延速度快、火势凶猛,同时还会释放出大量烟雾和有毒气体,严重威胁人员生命和设备安全。如何减少安全隐患,提高系统的安全性,成为很多新建建筑的首要安全问题。本文针对当前现状,对目前布线行业中线缆的防火标准与产品选用的问题进行了探讨。
Since the introduction of the TIA / EIA-568B standard, Gigabit cabling systems have started to be used. However, many designers, contractors, and users are neglecting a potential design flaw, fire risk, while pursuing speed. Most users choose the communication cable based on electrical performance requirements, and cable fire rating requirements are often ignored. According to the statistics of the fire department, in the fire that occurred in our country, about half of the fires caused by the electrical accidents occurred. In electrical fires, fires due to the aging and overload of wire and cable account for a large proportion. Although the strong electric cable can not cause fire, but after the fire, due to the flammability of the insulating sheathing material, once the weak electric cable is involved in the fire, the fire spread rapidly and the fire is fierce. At the same time, it will also release a large amount of smoke and poisonous gas, Serious threat to human lives and equipment safety. How to reduce the potential safety hazard and improve the safety of the system has become the primary safety issue of many new buildings. In this paper, according to the current status quo, the current cabling industry in the fire protection standards and product selection issues are discussed.