昆明惠博电缆桥架厂

耐火电缆桥架的辨别方法

   耐火电缆桥架是指在桥架选材，结构设计，安装方面更加注重防火，使之达到耐火电缆的作用。
   一、为了防止损坏、破坏电缆绝缘层，要求桥架草盒内无明显的凹凸，毛刺，空洞，生锈等
   二、为保证整个电缆桥架的耐火性，焊接电缆桥架表面要确保光滑。
   三、电缆桥架的以及槽盒及支架如果有涂防火材料，要确保不要有剥落。
   四、电缆桥架钢结构防火材料必须满足GB14907-1994的要求。

   五、电缆桥架盒如果采用钢板制作，其最小厚度呀满足CECS31;91<钢制电缆桥架工程设计规范>的要求。
   六、电缆桥架如果采用非金属材料，其燃烧性能要求大于B级。
   七、电缆桥架根据其确保电缆持续工作时间分为半个小时，四十五分钟，一个小时已基本满足市场需求。
   八、电缆桥架耐火检测一种是通过温度控制法，即通过检测桥架内温度实现。另外一种是把电缆放电缆桥架中，然后通电，检验在燃烧 环境下的工作情况。

The fire resistant cable tray means that the fire protection should be paid more attention to in the material selection, structural design and installation of the bridge, so as to achieve the role of the fire resistant cable.
one. In order to prevent damage or damage to cable insulation, there is no obvious bump, burr, cavity, rust and so on.
Two, in order to ensure the fire resistance of the whole cable bridge, the surface of welded cable bridge must be smooth.
Three, if there are fire proofing materials for cable tray and box and bracket, make sure that there is no spalling.
Four, cable bridge steel structure fireproofing materials must meet the requirements of GB14907-1994.
Five, if the cable tray box is made of steel plate, its minimum thickness will meet the requirements of CECS31, 91< steel cable tray engineering design specification.
Six, if the cable tray is made of non-metallic materials, its combustion performance is greater than B level.
Seven, the cable bridge is divided into half an hour, forty-five minutes, and one hour, which basically meets the market demand.
Eight, the cable bridge fire detection is through temperature control, that is, by detecting the temperature inside the bridge. The other is to put cables in the cable tray, then electrify, and check the combustion.
Working conditions in the environment.