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.山東電纜橋架在進行接地施工時需要根據(jù)設(shè)計要求施工。如果對設(shè)計沒有具體要求，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)熱鍍鋅電纜橋之間可以將鍍鋅連接板用作道岔，使橋一體化，在連接板兩端的兩根連接螺栓上安裝鍍鋅彈簧墊圈。

(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)涂裝和注塑成型以及涂裝其他絕緣物的橋梁使用軟銅線過渡。

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

連接用螺栓請鍍鋅，連接引線端子和橋梁的接觸部位請去除絕緣涂層，涂布防銹導(dǎo)電膏。或者委托制造商在橋梁上焊接銅墊圈，保證電纜橋梁之間的連接可靠。

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)橋梁通過建筑物的變形狹縫和直線段超過30m，設(shè)置補償裝置，在橋梁的間歇兩端用軟銅線渡過，留下伸縮余量。關(guān)于振動的場所，請在接地部的連接部位安裝線圈。

(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.設(shè)計要求橋梁作為接地干線的一部分時，電纜橋梁安裝規(guī)范在接頭上的連接電阻請控制在0.00033以下。如果利用橋梁連接板不滿足這個要求，即使是鍍鋅橋梁，也適用符合設(shè)計要求的軟銅線過渡。

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.橋梁系統(tǒng)需要有可靠的電連接，電纜橋梁從始端到終端，少有一處與接地干線可靠連接。沿著橋全長另行鋪設(shè)接地干線時，各段(包括非線性段)的橋需要少有一點與接地干線可靠連接。

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.熱鍍鋅橋梁之間可以利用鍍鋅連接板作為道岔，將橋梁連接成一體。在連接板兩端的2根連接螺栓上安裝鍍鋅彈簧墊圈，在橋梁之間用4mm以上的軟銅線連接，連接橋梁和接地線形成電氣通路。整個橋梁和接地干線需要兩處以上的連接。

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.

以上就是山東電纜橋架在接地施工時要注意的幾個要點，電纜的安裝需要有嚴格的規(guī)范進行操作，電纜在安裝時可以跟具相應(yīng)的規(guī)范進行操作，如果安裝時出現(xiàn)一些問題則需要及時進行處理，尤其在進行接地施工時，因為包含電線的連接沒需要格外注意。

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.