Author: Noyafa–Noyafa Cable Tester
The principle of route detection and identification technology of running cables The large-scale use of power cables in our country has a history of 20 to 30 years. The cables used in the early stage have now entered the route and run without drawings. The principle of cable path finding and identification technology The large-scale use of power cables in my country has a history of 20 to 30 years, and the cables that were used in the early stage have now entered the path. There are no drawings or no drawings. Therefore, the occurrence rate of cables being cut by construction has shown an obvious upward trend in recent years. It is urgent and necessary to find a fast and effective method for locating power cable paths. At present, the commonly used cable routing method in China is the routing method of power failure and audio signal. There are many running cables that cannot be powered off. How to solve this contradiction has become an urgent problem for the power system to be solved.
European and American countries have carried out research on power cable routing and positioning relatively early. In the 1970s, the electromagnetic coupling method and the induction method were invented, and have been successfully applied in power cable positioning. my country's research on cable routing and positioning started very late, and the research on the method of power cable routing has only started within ten years. After ten years of hard work, the domestic technology in this field has fully reached the international advanced level. , Since domestic researchers are more concerned about the current situation of domestic cable operation (cable dense, serious power frequency interference), it has overcome the disadvantage of poor anti-interference ability of foreign technology. Due to the differences in electrical conductivity, magnetic permeability, density or other physical and chemical properties between the cables laid underground and the surrounding soil medium, they can be detected, identified and distinguished.
At present, the methods used in underground cable detectors generally include electromagnetic method, direct current method, seismic wave method, radioactive tracking method and geological radar. Among them, the electromagnetic method has become the most commonly used and effective method in cable detection work due to its high detection accuracy, simple operation, strong anti-interference ability, wide application range, low cost and high efficiency. Live Cable Identifier Price Shenzhen Noyafa Electronic Technology Co., Ltd.
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