Armored power cable manufacturers: common sense of power cables

2022-07-22

Armored power cable manufacturers believe that in the structural design, production and selection of power cables, electrical properties (including electrical conductivity, insulation and transmission characteristics, etc.), mechanical and physical properties, aging properties, compatibility between materials and other properties Materials with good properties (such as metal hardness, creep, non-flame resistance, radiation resistance of polymer materials, etc.) must be comprehensively considered according to the purpose of the product, the use requirements and the laying environment. This requires a thorough understanding of metallurgy, metalworking, electroplating, polymer materials, dielectric chemistry, electrical insulation, polymer rheology and heat transfer.

Armored power cable manufacturers believe that wires include power cables for power transmission, communication cables for information transmission, electromagnetic wires for electromagnetic energy conversion, and special cables for control, signal, aerospace, ships, automobiles, mining and other occasions. As far as the application fields of power cables are concerned, various aviation equipment cruising in the vast space, communication trunk lines across the ocean floor connecting all continents, busy buses and trains, and various electrical appliances that bring infinite power to the world are all Accompanied by power cables.

Armored power cable manufacturers believe that in a sense, the development history of power cable technology is the history of the development and application of cable materials. The application of various new materials has promoted the development of cable technology. According to the nature of the material, it is divided into eight categories: metal materials, fiber materials, paints, coatings, rubber, plastics, inorganic materials and gas materials, which are used in the manufacture of power cables. The cable structure is concentric from the inside to the outside, which determines that the production of power cables can only be carried out continuously from the inside to the outside, and the processes are closely connected and irreversible. Parts cannot be assembled like other mechanical products.

Armored power cable manufacturers believe that due to the particularity of the power cable structure, the equipment in the cable industry is different from other processing equipment in the machinery industry. According to the process characteristics, the cable equipment can be summarized as casting, rolling, pressing, pulling, twisting, extruding, wrapping, coating and plating. The continuity of cable production determines that the product quality of the previous process will definitely affect the next process. Unlike other mechanical products, cables can remove and replace defective parts. Once there is a quality problem, the entire cable will be scrapped or cut off. If the cable in operation fails, it will cause a large-scale power outage or interruption of information transmission, and the loss and impact are huge. Therefore, the quality requirements of cable products cannot be sloppy at all.

Armored power cable manufacturers believe that different operating environments have different effects on high temperature, low temperature, corona, radiation, air pressure, water pressure, oil, ozone, atmospheric environment, vibration, dissolution, wear, bending, torsion, tension, compression of power cables. , flame retardant, fire protection, lightning protection, biological invasion, etc. have corresponding requirements. In the cable standards and technical requirements, specific test or test methods, as well as corresponding assessment indicators and inspection methods should be proposed for environmental requirements. For some cables working under special conditions of use, their suitability should be evaluated against additional use requirements to ensure the overall reliability of the cable engineering system.