Power cable power supply is more and more widely used because of its advantages of safety, reliability, and beautification of the city image. Power cables are mostly buried underground and belong to concealed works. When the cable fails due to various factors, it is very difficult to find it. It often takes hours or even days, which not only wastes a lot of manpower and material resources, but also causes incalculable power failure losses. Therefore, finding the cable fault point accurately, quickly and economically, improving the reliability of power supply, reducing the cost of fault repair and the loss caused by power failure have become increasingly concerned by power supply departments. In recent years, the testing technology for power cable faults has made great progress, including the pulse current method for fault location, the pulse magnetic field method for path detection, and the acoustic magnetic synchronization method for fault location using the difference between sound and magnetic field signals.
Cable fault detection is a highly technical and specialized work. At present, only a few companies have the ability to detect cable faults.
In the fault detection of power cable, it is not only necessary to have perfect and reliable instruments and equipment and correct test methods, but also more important to accumulate and master scientific theoretical knowledge. Our company has a team with rich practical experience.
