As we all know, cable tray is mainly used for cable laying, especially in petrochemical enterprises, which are mostly flammable and explosive places. Therefore, the selection of cable tray for power transmission also requires good grounding operation. Let's see what we should pay attention to in cable tray grounding.

1、沿電纜橋架全長另敷設接地干線時，每段（包含非直線段）電纜橋架應起碼有一點與接地干線可靠連接。

1. When another grounding main line is laid along the whole length of the cable tray, at least one point of each section (including non-linear section) of the cable tray shall be reliably connected with the grounding main line.

2、電纜橋架系統應具有可靠的電氣連接并接地（只對金屬橋架）。

2. The cable tray system shall have reliable electrical connection and grounding (only for metal tray).

3、當允許利用電纜橋架系統構成接地干線回路時應符合以下要求。電纜橋架端部之間連接電阻應不大于0.00033歐姆，接地孔應絕緣涂層。在1KV及以下中性點直接接地系統中，受電設備的接地與系統中性線接地相連。裝有處動切斷供電裝軒時，電纜橋架的級長方向金屬橫截面積應不小于規(guī)定值。

3. When the cable tray system is allowed to form the grounding trunk circuit, the following requirements shall be met. The connection resistance between the ends of cable tray shall not be greater than 0.00033 ohm, and the insulation coating shall be removed from the grounding hole. In the 1kV and below neutral point direct grounding system, the grounding of the receiving equipment is connected with the neutral line of the system. The metal cross-sectional area of the cable tray in the direction of grade length shall not be less than the specified value when the dynamic cut-off power supply installation is installed.

綜上所述就是對濟南電纜橋架接地要注意什么的介紹，希望能夠幫到大家。想要了解更多精彩內容可以直接關注：http://www.euup.cn電纜橋架接地是非常重要的，不僅僅是為了我們的生命財產，也是為了避免火災的發(fā)生。

To sum up, is to Jinan cable bridge grounding what to pay attention to the introduction, I hope to help you. If you want to learn more, you can pay attention to: http://www.euup.cn Cable bridge grounding is very important, not only for the safety of our lives and property, but also to avoid fire.