Recently, I received a call from customers saying that they need to purchase a batch of cables for use. I was interested in the elbow high-voltage cable products of our company, and wanted to know the specific situation. The difference between the high-voltage cable and the low-voltage cable was vague, so I changed to explain the situation of the high-voltage cable to customers. Our company’s products, newheek high-voltage cable from the inside to the outside, including: conductor, insulation, inner sheath, filler (armor), outer insulation. Of course, armored high-voltage cable is mainly used for burial, which can resist the high-strength compression on the ground and prevent other external force damage.
For high-voltage cables, we can mainly focus on the wires on the poles and the cables in the underground pipe network. We say that there are different kinds and situations of laying methods for high-voltage cables, such as buried, pipeline, tunnel or overhead.
The cable is the bridge between the power supply equipment and the electric equipment, which plays the role of transmitting electric energy. It is widely used, so faults often occur. The following is a brief analysis of the causes of common problems of high-voltage cables. According to the causes of the faults, they can be divided into the following categories: Manufacturer’s manufacturing reasons, construction quality reasons, design reasons of the design unit, and external force damage.
In general, the problems that are easy to occur in the cable production process are: insulation ZD eccentricity, uneven thickness of insulation shielding, impurities in the insulation, protrusions in the internal and external shielding, uneven degree of cross-linking, cable damp, poor sealing of cable metal sheath, etc. in some cases, faults may occur in the completion test or shortly after putting into operation, and most of them exist in the form of defects in the cable system It causes serious hidden danger to the long-term safe operation of the cable.