非镀锌电缆桥架间连接板的保养
Cable bridge refers to the cable ladder, cable tray and metal groove. Cable bridges are mainly made of steel, aluminum alloy and glass steel. The surface treatment of steel bridge is divided into spray paint, spray plastic, electric galvanizing, hot galvanizing, powder electrostatic spraying and other technology.
电缆桥架的安装主要有沿顶板安装。沿墙水平和垂直安装、沿竖井安装、沿地面安装。沿电缆沟及管道支架安装等。安装所用支(吊)架可选用成品或自制。支(吊)架的固定方式主要有预埋铁件上焊接，膨胀螺栓固定等。
The installation of the cable bridge is mainly along the roof. Install along the wall horizontally and vertically, install it along the shaft, and install it along the ground. Installation along the cable trench and the pipe support. The support (hanging) frame used for installation can be used for finished products or homemade. The fixed way of the supporting frame mainly includes the welding on the preburied iron parts, the fixing of the expansion bolt and so on.
非镀锌电缆桥架间连接板的两端跨接铜芯导线或编织铜线小允许截面应不小于4mm2。镀锌电缆桥架间连接板的两端可不作接地跨接线.但每块连接板应有不少于2个有防松动螺帽或防松动垫圈的连接固定螺栓。当允许利用电缆桥架构成接地干线回路时.电缆桥架及其支、吊架、连接板应能承受接地故障电流.并满足热效应的要求。
The minimum allowable cross section of both ends of the connecting plate of non galvanized cable bridge and the minimum cross section of the copper wire or braided copper wire should be less than 4mm2. The ends of the connecting plates between the galvanized cable bridge can not be connected to the ground. However, there should be no less than 2 connection bolts with loose loosening nuts or loosening washers for each connecting plate. When the cable bridge is allowed to form the grounding trunk circuit, the cable tray and its support, hanger and connecting plate should be able to withstand the ground fault current and meet the requirements of thermal effect.
强腐蚀性环境应采用(F)类复合环氧树脂防腐阻燃型电缆桥架。托臂、支架也要选用同样材料，提高桥架及附件的使用寿命，电缆桥架。在容易积灰和其它需遮盖的环境或户外场所宜加盖板。
A (F) type of composite epoxy resin anticorrosion and flame retardant cable bridge should be used in strong corrosive environment. The bracket will choose the same material, improve the service life of the bridge and annex, cable tray. A cover board should be added to the easy to ash and other covered environments or outdoor places.
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