Cable trays are generally installed outdoors or on some high-rise buildings to erect cables, which can play a certain role in protecting cables. Shandong cable trays need to be operated in strict specifications during construction. What are the specific specifications? Next, let's take a look.

1.山东电缆桥架在进行接地施工时需要根据设计要求施工。如果对设计没有具体要求，需要按照以下要求。

1. Shandong cable tray shall be constructed according to the design requirements during grounding construction. If there are no specific requirements for the design, the following requirements shall be followed.

(1)热镀锌电缆桥之间可以将镀锌连接板用作道岔，使桥一体化，在连接板两端的两根连接螺栓上安装镀锌弹簧垫圈。

(1) Galvanized connecting plates can be used as turnouts between hot-dip galvanized cable bridges to integrate the bridge. Galvanized spring washers are installed on two connecting bolts at both ends of the connecting plates.

(2)涂装和注塑成型以及涂装其他绝缘物的桥梁使用软铜线过渡。

(2) Soft copper wire transition shall be used for bridges coated and injection molded and coated with other insulation.

连接用螺栓请镀锌，连接引线端子和桥梁的接触部位请去除绝缘涂层，涂布防锈导电膏。或者委托制造商在桥梁上焊接铜垫圈，保证电缆桥梁之间的连接可靠。

The connecting bolts shall be galvanized, and the contact parts between the connecting lead terminals and the bridge shall be removed with insulating coating and coated with antirust conductive paste. Or entrust the manufacturer to weld copper washers on the bridge to ensure reliable connection between cable bridges.

(3)桥梁通过建筑物的变形狭缝和直线段超过30m，设置补偿装置，在桥梁的间歇两端用软铜线渡过，留下伸缩余量。关于振动的场所，请在接地部的连接部位安装线圈。

(3) When the bridge passes through the deformation slit and straight section of the building for more than 30m, compensation devices shall be set, and soft copper wires shall be used at both ends of the bridge at intervals to leave expansion allowance. For places with vibration, please install the coil at the connection part of the grounding part.

2.设计要求桥梁作为接地干线的一部分时，电缆桥梁安装规范在接头上的连接电阻请控制在0.00033以下。如果利用桥梁连接板不满足这个要求，即使是镀锌桥梁，也适用符合设计要求的软铜线过渡。

2. When the design requires that the bridge is a part of the grounding trunk line, the connection resistance on the joint of the cable bridge installation specification should be controlled below 0.00033. If the use of bridge connecting plates does not meet this requirement, even galvanized bridges are suitable for soft copper wire transition meeting the design requirements.

3.桥梁系统需要有可靠的电连接，电缆桥梁从始端到终端，至少有一处与接地干线可靠连接。沿着桥全长另行铺设接地干线时，各段(包括非线性段)的桥需要至少有一点与接地干线可靠连接。

3. The bridge system needs reliable electrical connection. At least one part of the cable bridge is reliably connected with the grounding trunk line from the beginning to the end. When laying another grounding trunk line along the whole length of the bridge, the bridge of each section (including non-linear section) needs to be reliably connected with the grounding trunk line at least at one point.

4.热镀锌桥梁之间可以利用镀锌连接板作为道岔，将桥梁连接成一体。在连接板两端的2根连接螺栓上安装镀锌弹簧垫圈，在桥梁之间用4mm以上的软铜线连接，连接桥梁和接地线形成电气通路。整个桥梁和接地干线需要两处以上的连接。

4. Galvanized connecting plates can be used as turnouts between hot-dip galvanized bridges to connect the bridges as a whole. Install galvanized spring washers on the two connecting bolts at both ends of the connecting plate, connect the bridges with flexible copper wires of more than 4mm, and connect the bridge and the grounding wire to form an electrical path. The whole bridge and grounding trunk line need more than two connections.

以上就是山东电缆桥架在接地施工时要注意的几个要点，电缆的安装需要有严格的规范进行操作，电缆在安装时可以跟具相应的规范进行操作，如果安装时出现一些问题则需要及时进行处理，尤其在进行接地施工时，因为包含电线的连接没需要格外注意。

The above are the key points to pay attention to in the grounding construction of Shandong cable bridge. The cable installation needs to be operated in strict specifications. The cable can be operated with corresponding specifications during installation. If there are some problems during installation, they need to be handled in time, especially in the grounding construction, because the connection of wires does not need special attention.