Communication cable production plants are distributed throughout the country. At present, in addition to the production of long-distance communication cables and local telephone cables in China, the development of fiber optic cables and polyolefin insulation integrated sheathing in the city has also made considerable progress. Many domestic manufacturers and research institutes have introduced technology and equipment from abroad. produce. The following small series for everyone details the relevant knowledge of communication cable. Communication Cable Introduction: Communication cable refers to the cable used for near-distance audio communication and long-distance high-frequency carrier and digital communication and signal transmission, and is one of China's five major cable products. According to the purpose and scope of use of communication cables, they can be divided into six series of products, namely, domestic communication cables (including paper-insulated local cables, polyolefin-insulated polyolefin sheathed local telephone cables), long-distance symmetrical cables (including paper Insulated high- and low-frequency long-distance symmetric cables, copper-core foam polyethylene high- and low-frequency long-distance symmetric cables and digital transmission long-distance symmetrical cable), coaxial cable (including small coaxial cable, medium coaxial and small coaxial cable), submarine cable (separable Symmetrical submarine and coaxial submarine cables), fiber optic cables (including conventional cable, ribbon array, and skeleton types), and RF cables (including symmetric and coaxial RF). The specific meaning of the communication cable model specification: The communication cable is mainly used for near-distance audio communication and long-distance high-frequency carrier and digital communication, and its types, models and specifications are numerous. There are mainly polyolefin insulated polyolefin sheathed local cable. The conductor diameter is 0.32mm, 0.40mm, 0.50mm, 0.60mm and 0.80mm according to the standard. The product model and specifications are HYA, HYAT, HYAC, HYAGC. The production range can be different depending on the diameter of the conductor. The total processing range is 10-3000 pairs. There are HEYFL23, HEYFQ23, and HEYFQ41 models for long-distance symmetrical cables. The representative specifications are 3 groups, 4 groups, 7 groups, 14 groups, and 19 groups. 1, HTVV 30 * 2 * 0.5, polyolefin insulated PVC sheath, HTVV = telephone indoor copper sheathed wire; 2, HYAT 50 * 2 * 0.5, polyolefin insulated PVC sheath, 50 = cable contains 50 independent insulated cables, 2 = each independent insulated cable contains two cores, 3, 10GYTY-2D1: A kind of optical cable, 12YZ3*1.5. 2SYV-75-7: coaxial cable, 75 ohm impedance. 2RVVP2*1.0: Shielded and twisted shielded cable. 8*G100. 4, HBV 2*1.0, PVC indoor copper core, 2 cores, each core cross-sectional area of ​​1.0 square mm Technical specifications of communication cables: Although there are certain differences in the manufacturing process of different cables, their general processing methods have their common features. In order to ensure the structural dimension of the cable is stable and have good electrical properties, the production order of the cable is taken from inside to outside according to its structure. The entire manufacturing process is divided into the manufacture of insulated wire cores, the twisting of wire groups, the manufacture of coaxial pairs, the cabling process, the drying of cores, and the manufacture of metal sheaths and sheaths for cables. The electrical specifications of communication cables are numerous and high. General metal cables have wire resistance, insulation resistance, working capacitance, dielectric strength, and capacitance unbalance. For long distance and coaxial cable, in addition to the above requirements, there are special requirements such as end impedance, impedance non-uniformity, attenuation constant, crosstalk and so on. The electrical specifications of communication cables are numerous and high. General metal cables have wire resistance, insulation resistance, working capacitance, dielectric strength, and capacitance unbalance. For long distance and coaxial cable, in addition to the above requirements, there are special requirements such as end impedance, impedance non-uniformity, attenuation constant, crosstalk and so on. The above is Xiaobian's introduction to the relevant knowledge of communication cables. Please pay attention to Qijia Information for more practical knowledge. Cable cable plug shield control cable integrated cable cable brand Container Flooring Plywood,Reclaimed Shipping Container Flooring,Bamboo Plywood Container Flooring,Laminated Plywood Linyi Fengzhize Trading Co., Ltd. , https://www.fengzhize.com
0.5=The cross-sectional area of ​​each copper wire is 0.5 square millimeters 
The specific meaning of the communication cable model