Gb-.3.52.220kv and above high-voltage power distribution equipment installed control cable, should be selected 450 / 750V. Is not wrong, but 600 / 1000V
YJV-4 * 240 + 1 * 120 Cable Approximate Outer Diameter 64.2mm, YJV-4 * 50 + 1 * 25 Cable Approximate Outer Diameter 33.9mm. 2 total outer diameter 98.1mm. DN150 steel pipe diameter calculation 140mm. The specification stipulates that when the cable protection tube is selected, it is determined according to the diameter of the cable. If the length of the pipe is less than 30 meters and the diameter of the pipe should not be less than 1.5 times of the outer diameter of the cable diameter, Should be less than 2.5 times! Of course, norms are standardized, the implementation of the implementation of the implementation of a lot of high safety factor to a good construction prevail! From the above can be seen, if the pipe length is less than 30 meters, no corners, with DN150 steel pipe can basically The If more than 30 meters a lot, you'd better follow the standard requirements of 2.5 times to choose cable protection tube diameter.
There are many models of cable, the size of the model is how the size of different specifications, the cable contains the power cable!
From the ground certainly not, you can walk from the wall planing, and now most of the buildings are geothermal, no keel, the ground is absolutely flat, shop moisture pad, shop the floor can be. It's too much trouble.
