防火电缆桥架有哪些介绍
防火电缆桥架在容易积灰尘、充斥易燃粉尘或防日晒的室内外环境中需要加盖板，在室外经常下雨的环境中要起脊和打排水孔，以防止防火电缆桥架进水后发生积水现象。山东电缆桥架厂家在此讲解更多知识点，如下：
The fireproof cable tray needs to be covered in indoor and outdoor environments that are prone to dust accumulation, full of combustible dust or sun protection, and ridging and drainage holes should be drilled in outdoor environments that often rain to prevent water accumulation after water entering the fireproof cable tray. The manufacturer of cable tray in Shandong will explain more knowledge here, as follows:
1、国家标准
1. National standards
防火电缆桥架国家标准中主要品种有直线段代号为A，水平弯通代号为B，水平三通代号为C，水平四通代号为D。防火电缆桥架2000国家标准防护类型有普通型代号J，湿热型代号为TH。防火电缆桥架2000国家标准包含桥架的型式及品种、托盘和梯架的规格、荷载等级的选择，防火电缆桥架2013国家标准包括桥架的常用规格尺寸、板材厚度和额定均布载荷等级。
The main varieties of fireproof cable tray in the national standard include straight section code A, horizontal elbow code B, horizontal tee code C, and horizontal cross code D. The protection type of fireproof cable tray 2000 national standard includes common type code J and damp heat type code TH. The national standard of fireproof cable tray 2000 includes the type and variety of cable tray, the specification of tray and ladder, and the selection of load grade. The national standard of fireproof cable tray 2013 includes the common specification and size, plate thickness, and rated uniform load grade of cable tray.
2、厚度标准
2. Thickness standard
防火电缆桥架标准中喷塑工艺表面涂层的厚度要求>=50um,电镀锌表面锌层厚度要求>=12um，热浸镀锌表面锌层厚度要求>=65um。VCI双金属涂层厚度要求>=60um。防火电缆桥架标准中波纹底托盘桥架的宽度小于300mm时，侧板的厚度应至少为1.0mm，波纹底板的厚度应为0.7mm,盖板的应不小于0.6mm。
In the standard of fireproof cable tray, the thickness of surface coating of plastic spraying process is required to be>=50um, the thickness of zinc layer on galvanized surface is required to be>=12um, and the thickness of zinc layer on hot-dip galvanized surface is required to be>=65um. The thickness requirement for VCI bimetallic coating is>=60um. When the width of corrugated bottom tray tray in the fireproof cable tray standard is less than 300mm, the thickness of side plate shall be at least 1.0mm, the thickness of corrugated bottom plate shall be 0.7mm, and the thickness of cover plate shall be not less than 0.6mm.
3、桥架安装
3. Bridge installation
防火电缆桥架安装如果是托盘从室外进入室内，则在室外那段建议梯式桥架，并在进入墙体处进行封堵防渗水处理。防火电缆桥架安装时，对于有防雷要求的防火电缆桥架，其外壳要与防雷接地装置可靠连接。敷设在电缆竖井的防火电缆桥架安装时，其固定支架不应该安装在固定电缆的绑线支架上，且应当每隔3～5层设置承重支架，防止固定支架的承重超过其安全载荷。
For the installation of fireproof cable tray, if the tray enters the room from the outside, it is recommended to use ladder type tray in the outdoor section, and block and prevent water seepage at the entrance to the wall. During the installation of fireproof cable tray, the shell of fireproof cable tray with lightning protection requirements shall be reliably connected with the lightning protection grounding device. When installing the fireproof cable tray laid in the cable shaft, its fixed support should not be installed on the binding support of the fixed cable, and the bearing support should be set every 3-5 layers to prevent the bearing of the fixed support from exceeding its safe load.
What is the introduction of fireproof cable tray? We have explained its three aspects here first, hoping to provide you with effective assistance. If you have any doubts or needs, please come to our website Consult and understand!
