Lightning protected cable for communication base station

Abstract

The invention belongs to the technical field of cables, and relates to a lightning protected cable for a communication base station. The lightning protected cable for the communication base station comprises a cable core, an inner jacket, an armor layer, an outer jacket, a ground layer, a connecting rib, a suspension wire and a suspension wire protective layer, and is characterized in that the cable core is coated with a first protective layer which is coated with the inner jacket in an extrusion molding manner, the inner jacket is coated with a second protective layer, and the ground layer is arranged outside the second protective layer and coated with the armor layer which is coated with the outer jacket in an extrusion molding manner; the armor layer adopts a steel strip coated with a film on single surface, and the surface, contacted with the ground layer, of the armor layer is not coated with the film; the first protective layer and the second protective layer adopt mica tapes; the outer jacket is prepared from raw materials in parts by weight as follows: 71 parts of polyethylene, 1 part of the antioxidant 1010, 12 parts of aluminum hydroxide, 0.5 parts of the HK type antistatic agent, 3 parts of ethyl acetate, 1 part of carbon black, 10 parts of zirconia and 1.5 parts of polyethylene wax. The lightning protected cable has the main benefits as follows: the manufacture is simple and convenient, the production speed is high, the electrical resistivity of the ground layer is lower, the maintenance cost is lower, less dust is absorbed, and the voltage withstand performance and the flame retarding performance are better.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to lightning protection cables for communication base stations. Background technique [0002] In the past 20 years, my country's information industry has grown at an average annual rate of 25%, ahead of other industries, and has become the first pillar industry in the industry. It is estimated that in the next 10 years, the information industry will double again. Among the products in the communication industry, special lightning protection optical cables for communication with higher safety performance will have a good market prospect. With the construction of the 3G network communication network, the lightning protection measures of the communication base station computer room will also be considered to avoid the power interruption of the communication base station and the computer room being caught on fire due to lightning, which will cause a large area of ​​communication interru...

AI Technical Summary

Problems solved by technology

However, they still have the following deficiencies: (1) the ground layer adopts the method of oblique wrapping, and the production speed is slow; (2) the armor layer only plays the role of armor, (3) after being struck by lightning, the part of the cable The grounding layer is blown, so that the inner sheath melts in the cable core interval and the insulated cores are integrated, making it difficult to separate the insulated cores; it can only be disposed of as waste

The above deficiencies increase the maintenance cost after the cable lightning strike

[0004] In addition, because most of the lightning protection cables for communication base stations are located in the base station, and the base station is usually installed outdoors and is not frequently maintained, a large amount of dust will be absorbed on the cable, which will cause inconvenience to maintenance; in addition, the base station has a large number of Therefore, the temperature inside the base station is generally high, so the outer sheath of the cable is required to have high temperature resistance

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