電纜橋架安裝的接地問題研究

電纜橋架安裝的接地問題研究
一、存在的問題
（1）按要求規定，電纜橋架不超過三十米的應該有大于或等于兩處接地，施工中一般把末段接地給忽略了。超過三十米的電纜橋架每隔二十到三十米就要增加一處接
地。
（2）電纜橋架接地線截面必須滿足要求，消除安全隱患。
（3）關于非鍍鋅金屬電纜橋架，要設置專用的接地螺栓。
（4）避免電纜橋架的支架漏接地。
二、整改措施
（1）電纜橋架訂購方要向生產方提出在電纜橋架本地設置專用接地螺栓。
（2）在電纜橋架施工設計圖紙中明確連接位置和接地截面
三、總結
   電纜橋架是電纜線路的外露的可導電部分，必須保證接地的可靠性。在現場施工中，不但要做好接地線截面的正確選擇，還要做好電纜橋架與接地干線的可靠性連接。

Research on grounding problem of cable bridge mounting.

I. existing problems.

(1) in accordance with the requirements, the cable bridge shall be no more than 30 meters and shall have more than or equal to two grounding, which shall generally be neglected in the construction. More than 30 meters of cable bridge will be added every 20 to 30 meters.

The ground.

(2) the grounding wire section of the cable bridge must meet the requirements and eliminate the safety hazards.

(3) for non-galvanized metal cable bridge, special grounding bolts shall be set.

(4) avoid leakage grounding of the bracket of cable bridge.

Rectification measures.

(1) the cable bridge ordering party shall present to the manufacturer the special grounding bolts installed locally on the cable bridge.

(2) specify the connection position and grounding cross section in the design drawing of cable bridge.

Third, summary

The cable bridge is the conductive part of the exposed part of the cable line, and the grounding reliability must be guaranteed. In the field construction, it is necessary to make the correct choice of the grounding line section and the reliability connection of the cable bridge and the grounding trunk.