Specific meaning of communication cable model

2022-07-22
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Communication cable refers to the cable used for short-range audio communication and long-range high-frequency carrier and digital communication and signal transmission. It is one of the five cable products in China

communication cable manufacturers are distributed all over the country. At present, in addition to the production of long-distance communication cables and local telephone cables, China has also made great progress in optical fiber cables and polyolefin insulated comprehensive protective layer all plastic local telephone cables. Many domestic manufacturers and scientific research institutions have introduced technology and equipment from abroad to start production. The following editor will introduce the relevant knowledge of communication cables in detail

introduction to communication cable:

communication cable refers to the cable used for short-range audio communication and long-range high-frequency carrier and digital communication and signal transmission. It is one of the five cable products in China. According to the purpose and scope of use of communication cables, they can be divided into six series of products, namely, urban communication cables (including paper insulated urban telephone cables, polyolefin insulated polyolefin sheathed urban telephone cables), long-distance symmetrical cables (including paper insulated high and low frequency long-distance symmetrical cables, copper core foam polyethylene high and low frequency long-distance symmetrical cables, and digital transmission long-distance symmetrical cables) Coaxial cable (including small coaxial cable, medium coaxial cable and micro coaxial cable), submarine cable (including symmetrical submarine cable and coaxial submarine cable), optical fiber cable (including traditional cable type, strip array type and skeleton type), RF cable (including symmetrical RF and coaxial RF)

specific meaning of communication cable model and specification:

communication cable is mainly used for short-range audio communication and long-range high-frequency carrier and digital communication, with a wide variety of types, models and specifications. It mainly includes polyolefin insulated polyolefin sheathed local telephone cables, and the conductor diameters are 0.32mm, 0.40mm, 0.50mm, 0.60mm and 0.80mm according to the standard. The product model and specification are HYA, HYAT, HYAC and hyagc. The production range can vary according to the diameter of the conductor used. The total processing range is 10-3000 pairs. The models of long-distance symmetrical cables include heyfl23, heyfq23, heyfq41, etc., and their representative specifications include 3 groups, 4 groups, 7 groups, 14 groups, 19 groups, etc

1. Htvv 30*2*0.5, polyolefin insulated PVC sheath, htvv= copper core sheathed wire in telephone room

2, HYAT 50*2*0.5, polyolefin insulated PVC sheath, 50= the cable contains 50 independent insulated cables, 2= each independent insulated cable contains two cores,

0.5= the cross-sectional area of each core copper wire is 0.5 mm2

3, 10gyty-2d1: a kind of optical cable, 12yz3*1.5. 2syv-75-7: coaxial cable, 75 ohm impedance. 2rvvp2*1.0: shielded wire, twisted pair shielded wire. 8*G100。

4, HBV 2*1.0, PVC indoor copper core wire, 2 cores, each core has a cross-sectional area of 1.0 square mm

technical indicators of communication cable:

although different cables have certain differences in their manufacturing processes, their general processing methods have their commonalities. In order to ensure the stability of cable structure and size and good electrical performance, the production sequence of cable is carried out from inside to outside according to its structure. The whole manufacturing process is divided into the manufacturing of insulated cores, the stranding of wire groups, the manufacturing of coaxial pairs, the cabling process, the drying of cable cores, and the manufacturing of cable metal sleeves and outer protective layers

there are many high electrical technical indicators of communication cables. General metal cables have requirements for conductor resistance, insulation resistance, working capacitance, insulation strength, capacitance imbalance, etc. For long-distance and coaxial cables, in addition to the above requirements, there are special requirements for end impedance, impedance nonuniformity, attenuation constant, crosstalk and so on. The electrical technical indicators of communication cables are many and high. General metal cables have requirements for conductor resistance, insulation resistance, working capacitance, insulation strength, capacitance imbalance, etc. For long-distance and coaxial cables, in addition to the above requirements, there are special requirements for end impedance, impedance nonuniformity, attenuation constant, crosstalk and so on

the above is the Xiaobian's introduction to the relevant knowledge of communication cables. For more practical knowledge, please pay attention to Qijia information

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