The selection of cable tray and pipeline is the same principle, according to the cable cross-sectional area * 2.5 = bridge cross-sectional area. Then select the cable tray height and width size ≥ the cross-sectional area according to the sample. What are the precautions for cable tray selection in Shandong?
The selection of cable tray should pay attention to the following six aspects:
1. The larger load support spacing of XQJ cable tray device should be less than the allowable load and support span.
2. When selecting the width of cable tray, there should be a certain spare space, so as to add cable for the future.
3. When there are few power cables and control cables, they can be installed on the same cable tray, but the power cables and control cables shall be laid separately with a partition in the middle.
4. When Shandong cable tray is laid horizontally, the connector between cable trays should be set at about 1 / 4 of the span as far as possible. The horizontal cable should be fixed every 2 meters or so, and the vertical cable should be fixed every 1.5 meters or so.
5. The cable tray device shall be reliably grounded. If the cable tray is used as the grounding main line, the end of each layer of cable tray shall be connected (in parallel) with 16mm2 soft copper wire to connect with the main grounding main line, and the long-distance cable tray shall be grounded every 30-50m.
6. In addition to shielding and protective cover, protective cover shall be installed on the top layer of cable tray device during outdoor installation to prevent sunlight and rain. When welding and installation is required, the thickness of weld around weldment shall not be less than that of base metal, and the weld joint shall be treated with anti-corrosion.
After understanding the above six points, it can help us to select the cable tray better. Thank you for reading, hope the above content is helpful to you, if you want to know more wonderful content, please click our official website: Shandong cable bridge http://www.yeeones.com .