Weak power network system is a combination of different electronic functional districts. Strong bridge and weak bridge system are indispensable in weak power network system. Cable bridge is a supporting project of wiring engineering. Distribution and weak electricity should be set separately. What is the difference between strong bridge and weak bridge? In fact, the difference between strong bridge and weak bridge is quite big. Jinan Cable Bridge Company summarizes the difference between strong bridge and weak bridge mainly in the following aspects:

1、电缆桥架本身没有强弱电之分，是一模一样的，你用这个桥架布强电就叫强电桥架，如果用这个桥架走弱电，就叫弱电桥架。只是使用上的分别，他们的材质，规格，颜色，安装方式都是一样的，在外观上是没有什么区别的。

1. There is no distinction between strong and weak electricity in the cable bridge itself. It is identical. If you use this bridge to lay strong electricity, it is called strong electricity bridge. If you use this bridge to walk weak electricity, it is called weak electricity bridge. Only in the use of the difference, their material, specifications, colors, installation methods are the same, there is no difference in appearance.

2、但在安装过程中是有一定要求的，强电和弱电桥架不是多数为共用，一般设计都是分开。因为强电供电时强电电流会在电缆导线周围形成较强磁场影响弱电信号所以要分开或者在相同桥架内设置钢板隔板隔开。

2. But in the process of installation, there are certain requirements. Strong and weak bridge is not mostly shared, and the general design is separate. Because the strong electric current will form a strong magnetic field around the cable conductor to influence the weak electric signal when the strong electric power supply is applied, it is necessary to separate or install steel plate separators in the same bridge frame.

3、通常，弱电桥架规格要比强电桥架规格小，从材质，外观上看是一样的。但严格来说，在安装使用桥架的时候，要把强弱电分开的，并不能放在一个桥架里。

3. Usually, the specifications of weak bridge are smaller than those of strong bridge. The material and appearance are the same. But strictly speaking, when installing and using the bridge, the strong and weak electricity should be separated and not placed in a bridge.

4、电缆桥架是是用来走电缆的，电气里的电缆暗敷时（埋地或走楼板、墙里等）一般用镀锌钢管或塑料管做保护管，但明敷的时候，一般走桥架，比如，在厂房梁下三百左右吊装桥架，喷塑电缆桥架，在桥架上敷设电缆，这里的电缆不需要套保护管（镀锌钢管或塑料管）。

4. Cable bridge is used for traveling cables. When cables are hidden in the electricity (buried or traveling in floors, walls, etc.), galvanized steel pipe or plastic pipe are usually used as protective pipe, but when they are laid in the open, they are generally travelling bridge, for example, to hoist the bridge under 300 or so factory girders, to spray plastic cable bridge, and to lay cables on the bridge. The cables here do not need a protective pipe (galvanized steel pipe or plastic). Material pipe).

5、通常有梯形桥架、槽型桥架等材质有钢板热镀锌、电镀锌、喷塑、玻璃钢等。目前尚无专门的规范指导，各个生产厂家的规格形式缺乏通用性，因此，设计选型过程应根据电气各个系统的电缆类型、数量，合理选定适用的桥架。

5. Trapezoidal bridge and trough bridge are usually made of hot-dip galvanized steel plate, galvanized steel plate, plastic spraying, FRP, etc. At present, there is no specific normative guidance, and the specifications of each manufacturer are lack of universality. Therefore, the design and selection process should be based on the type and quantity of cables in each electrical system, and the appropriate bridge should be selected reasonably.

6、缆桥架且必须符合下列规定：

6. Cable bridges must meet the following requirements:

金属电缆桥架及其支吊架全长应不少于2处与接地干线相连接，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允许截面应不小于4mm，此外，为了防止电化学腐蚀作用，在铝合金电缆桥架上不得用裸铜导体作接地干线，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。作为接地干线的电缆桥架．其托盘、梯架端部之间的连接电阻应不大于0．0003Ω。

The full length of the metal cable bridge and its support and suspension should not be less than 2 places connected with the earthing trunk, and the allowable cross-section of the copper core conductor braided copper wire should not be less than 4 mm at the two ends of the connecting plate between non-galvanized cable bridges. In addition, in order to prevent electrochemical corrosion, bare copper conductor should not be used as the earthing trunk on the aluminium alloy cable bridge, and the two ends of the connecting plate between galvanized cable bridges may not be used as the earthing trunk. Ground-spanning connection. However, each connecting plate shall have at least two connecting and fixing bolts with anti-loosening nuts or anti-loosening washers. When the cable bridge structure is allowed to form a grounding trunk circuit, the cable bridge frame and its branches, hangers and connecting plates shall be able to withstand grounding fault current and meet the requirements of thermal effect. The connection resistance between the end of the pallet and the ladder of the cable bridge used as the main grounding line shall not exceed 0.0003_.

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Well, today's wonderful content will be introduced to you here, do not know you have any questions about Jinan cable bridge? Welcome to our official website: online customer service staff at http://www.sdhangfeng.com!