EVCOME EV charging stations for better life---Top EV charging stations manufacturers & suppliers in China.
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EVCOME EV charging stations for better life---Top EV charging stations manufacturers & suppliers in China.
What should be paid attention to in direct burial laying? In what situation is it used? If you are not a professional, you must not fully know how to use it. Today, evcome will briefly explain the four cable laying methods. When laying in direct burial, it is necessary to consider whether the cable is easily damaged by external impact. 1. If there is no strong impact, it can be laid directly. 2. If it may be subject to some large impacts, but the strength can be controlled within a certain range, direct burial armor can be considered. 3. If the external force is large, it is necessary to use a protective cover, which can be installed locally (such as through the road). Advantages and disadvantages of direct buried cable laying. Advantages: convenient laying, saving materials and labor. Disadvantages: inconvenient maintenance. If you want to maintain it, you need to dig. It is only recommended for use in places where maintenance is not considered or is acceptable. Yellow sand is generally required for direct burial. Common problems in the laying process. Question 1 How to find the point of failure? A: Use a line inspection cable tester. Question 2 Is a cable well required for direct buried cables? Supplementary question: The cables laid in the factory area are directly buried with armored cables. Is it necessary to add a cable well to the power distribution room that passes through and enters the workshop? Does the municipal 10KV cable need to increase the cable shaft when it enters the factory area? Answer: Cable wells cannot be installed if there are less than 6 cables. If there are more cables, wells are installed to facilitate replacement and addition of cables. When the municipal 10KV cable enters the factory, there is no need to set up a cable shaft, and it is led down from the terminal pole and directly buried in the high-voltage power distribution cabinet. Question 3 How to lay temporary cables at the construction site? Question supplement: The unit has built a new factory building, and the construction transformers and high-voltage lines are far away from the construction center. Since it is a steel structure factory building, overhead lines cannot be used to avoid conflicts with the steel structure installation. Only low-voltage cables can be used to lead from the transformer to the primary distribution box on the construction site, and then distributed to the secondary distribution boxes of the various construction units on site. How to lay low voltage cables? Is it directly buried or placed directly on the ground? Answer: It is strictly forbidden to lay directly on the ground. Low-voltage cables are laid by direct burial. What should be paid attention to when laying pipes? Under what circumstances is it used? Compared with direct burial, laying cables through pipes is more convenient for later maintenance and adding lines. For cables laid in pipes, some spare pipes can be considered to prepare for future line maintenance and capacity increase. 1. When laying through pipes, when the turning angle of the line is large or the distance of the straight line is long, it should be considered to set up a cable well. 2. If the number of cables is small and the wire diameter is small, a cable well can be used; 3. When there are many cables and the wire diameter is large, consider setting up a cable well. Cable wells can be made in accordance with the Atlas. In addition to atlases, many small passing wells can also be directly poured with bricks or concrete. At this time, consideration should be given to setting water seepage holes at the bottom. 4. Now there are more cast iron pipes, steel pipes, polyethylene pipes, nylon pipes, carbon pipes, etc., which can be selected according to needs. Pay attention to the influence of eddy current when the single-core cable passes through the metal pipe. .
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