Professional Cable Tray Manufacturer

Shandong Hongfeng Electric Group Co., Ltd.

The products can be widely used in construction, energy, power, plant.

What problems should be paid attention to when the non-embroidered steel cable tray is grounded?

Release time:

2023-12-19

The non-embroidered steel cable tray is different from other cable tray

The non-embroidered steel cable tray is different from other cable trays. We have just talked about the matters needing attention in the grounding of the cable tray, which introduces some problems that should be paid attention to in the grounding operation of the alloy cable tray, but for the grounding of the stainless steel cable tray, we should have more considerations. The following Shangyong Bridge introduces to you the problems that should be paid attention to when grounding the stainless steel cable tray:
1. Stainless steel bridge used as grounding trunk. the connection resistance between the tray and the end of the ladder should not be more than 0.0003 Ω.
two。
2. When the stainless steel bridge is allowed to form a grounding trunk circuit, the cable tray and its supports, hangers and connecting plates should be able to withstand the grounding fault current. and meet the requirements of thermal effect.
3. When using the cable tray as the grounding trunk, all kinds of expansion joints and soft connections of the bridge should be connected by copper soft wire or braided copper wire, and its cross section should not be less than 16mm2.
4. When the grounding trunk is laid separately along the whole line of stainless steel bridge, and the grounding trunk is made of flat steel, its cross section should not be less than 60mmz when laid indoors.
When outdoor laying, its cross section should not be less than 100mm2.
5. When the cable bridge is introduced into the outgoing building, it should be connected with the indoor grounding trunk line or outdoor grounding device of the building.
6. In order to prevent electrochemical corrosion, bare copper conductor should not be used as grounding line on aluminum alloy cable tray.

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