As an intelligent weak current system, cable tray plays an important role in our daily life. It makes up for general cable sagging, damage and other related situations, and plays a good role in commissioning, protection, management and later maintenance of cables and optical fibers. What conditions should be met when selecting Jinan cable tray?

1、鋪設距離。當橋架水平敷設時，離地面的高度少不應低于2或5米。如果垂直敷設，應在離地面1或8米以下的位置安裝金屬蓋板進行保護。但如果橋架敷設在專門的電氣室內，則不需要安裝保護蓋板。另外，如果電纜橋架需要水平敷設在人路或設備夾層內，且仍在2.5米以下，應采取一定的接地保護措施。

1. Laying distance. When the bridge is laid horizontally, the height from the ground shall not be less than 2 or 5 meters. If it is laid vertically, a metal cover plate shall be installed 1 or 8 meters below the ground for protection. However, if the cable tray is laid in a special electrical room, it is not necessary to install a protective cover plate. In addition, if the cable tray needs to be laid horizontally in the sidewalk or equipment interlayer and is still below 2.5 meters, certain grounding protection measures should be taken.

2、使用無孔塔盤橋架。如果需要使用可以避免電磁干擾的保護橋，一定要選擇無孔的托盤。

2. Use non perforated tray bridge. If you need to use a protective bridge that can avoid electromagnetic interference, you must choose a tray without holes.

3、應用于有防火要求的場所。如果橋架需要在防火要求的范圍內，那么可以在橋架、電纜梯內放置一些用具有阻燃或防火性能的網等材料制成的半封閉或封閉的東西，也需要在橋架、支吊架表面刷一層防火涂料。否則，橋梁的整體耐火性能無法滿足相關標準和規范的要求。而且在一些防火要求非常高的地方，還是盡量不要用鋁合金電纜橋架。

3. It shall be used in places with fire protection requirements. If the bridge is required to be within the scope of fire protection requirements, then some semi enclosed or enclosed objects made of flame retardant or fire-resistant nets and other materials can be placed in the bridge and cable ladder, and a layer of fire-retardant coating is also required on the surface of the bridge, supports and hangers. Otherwise, the overall fire resistance of the bridge cannot meet the requirements of relevant national standards and specifications. In addition, aluminum alloy cable tray shall not be used in places with high fire protection requirements.

4、滿足基本要素。在布置橋梁時，我們須根據運營經濟合理性和技術可行性兩個基本因素進行綜合比較。否則，無法確定比較好的方案。同時要充分滿足電纜敷設、施工安裝、維護方便的要求。

4. Meet the basic elements. When arranging the bridge, we must make a comprehensive comparison based on the two basic factors of operational economic rationality and technical feasibility. Otherwise, it is impossible to determine a better plan. At the same time, it shall fully meet the requirements of cable laying, construction and installation, and convenient maintenance.

5、耐蝕性。如果線槽、橋架及支吊架在腐蝕環境中使用，應該使用經過防腐處理或采用耐腐蝕剛性材料制成的橋架，且耐腐蝕性能須達到標準。建議選擇鋁合金材質的橋架，耐腐蝕性更好。

5. Corrosion resistance. If trunking, cable tray and supports and hangers are used in a corrosive environment, they should be made of anti-corrosion treatment or corrosion resistant rigid materials, and the corrosion resistance must meet the standard. It is recommended to select aluminum alloy cable tray for better corrosion resistance.

以上五點就是選擇濟南電纜橋架應該滿足的條件，對于其防火要求也很高，希望今天介紹的這些內容能對你有所幫助。

The above five points are the conditions that should be met when selecting cable bridges in Jinan. They also have high requirements for fire protection. I hope these contents introduced today can help you.