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The Classification of Communication Cable

Author:yhngrfd   Post Date:10-31-2017

Communication cables are cables that transmit telephones, telegrams, fax documents, television and radio programs, data and other electrical signals. By a pair of insulated above the wire twisted together. Compared with the overhead line, the communication cable has the advantages of large communication capacity, high transmission stability, good confidentiality, less natural conditions and external interference.

Communication cable: by a number of insulated wires or conductors twisted into the cable and protect the cable core is not moisture and mechanical damage caused by the outer jacket of the communication line

By a number of insulated wires or conductors constitute a cable core, with a sealed jacket outside the communication lines. Some outside the jacket is also equipped with outer protective layer. There are overhead, buried, piping and underwater and other means of laying. According to the structure is divided into symmetrical, coaxial and integrated cable; by function divided into field and permanent cable (underground, submarine cable). Communication cable transmission band is wide, large communication capacity, subject to external interference is small, but not easy maintenance. Can transmit telephones, telegrams, data and images.

Main Category:

⑴, the city communication cable product model

⑵, coal mine dedicated communication cable product model

⑶, shielding communication cable

⑷, armored communication cable

⑸, flame retardant communication cable

According to the cable type, the communication cables are classified as follows:

1, Single wire: refers to the most primitive communication cable, single wire loop to the earth as a regression line.

2, Symmetrical cable: by two in the ideal conditions are exactly the same composition of the wire loop.

3, Coaxial cable: the same axis will be inside and outside the two conductors form a loop, the outer conductor around the inner conductor, while the two insulated.

However,accordance to the application, the communication cable can be divided into the following three categories:

1, Long-distance cable: long transmission distance, the general reuse, most buried directly in the ground, a few cases using overhead installation, or installed in the pipeline.

2, The city cable: cable within the wire "in pairs", and the number of more. Generally installed in the pipeline, a small amount of the city cable attached to the building or overhead installation.

3, The Council with the cable: mainly refers to the use of communications in the telecommunications bureau, generally installed in the patch panel, and some installed in the cable duct; Bureau of cable for transmission equipment and switching equipment between, and other Inside the equipment. Inside the bureau for fire protection, sometimes also need to use the cable with fire-retardant jacket.

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