High-strength three-core flexible cable for communication power supply

Abstract

The invention discloses a high-strength three-core flexible cable for a communication power supply. The high-strength three-core flexible cable comprises three conductive wire cores, wherein each conductive wire core is wrapped with a polyethylene insulation tape and comprises a circular aramid fiber core, and a plurality of ''Z''-shaped conductors are twisted on the outer surface of the circular aramid fiber core to form an inner conductive layer; a plurality of trapezoidal conductors are twisted on the outer surface of each inner conductive layer to form an outer conductive layer, the polyethylene insulation tape wraps the outer conductive layer, and the polyethylene insulation tape is coated with a halogen-free polyolefin elastomer insulation layer; and a glass fiber tape wraps the three conductive wire cores, and an adhesive filling part fills the inside of the inner conductive layers and gaps among the aramid fiber precursors. The high-strength three-core flexible cable improves transmission capacity, reduces line loss, and decreases temperature of the conductors, thereby prolonging the service life of the cable; and the high-strength three-core flexible cable ensures that the plurality of aramid fiber precursors in an aluminum layer are round, high in heat resistance, compact and not easy to ventilate, so that the cable has the performances of high temperature resistance, fire resistance, halogen free and no smoke release.

Description

technical field [0001] The invention relates to a communication power supply cable, in particular to a three-core flexible cable for high-strength communication power supply. Background technique [0002] The three-core flexible cable for high-strength communication power supply used in base station construction has been widely promoted and applied, mainly used in the power connection of switch cabinets. The three-core flexible cable for high-strength communication power supply not only requires good flexibility to facilitate laying in narrow spaces or similar situations, but also requires ideal flame retardancy to adapt to use in occasions with severe fire ratings Require. [0003] The existing communication power cables mainly have the following deficiencies: First, since they all use stranded thin copper wires as conductors, and this conductor is called a five-category copper conductor in the industry, the degree of flexibility cannot meet the desired requirements. And ...

AI Technical Summary

Problems solved by technology

[0003] The existing communication power cables mainly have the following deficiencies: First, since they are all made of stranded thin copper wires, and this conductor is called a five-category copper conductor in the industry, the degree of softness cannot meet the desired requirements

And due to the poor softness, the bending radius is limited, so when laying in a narrow space, obstructed by immovable objects or even corners, it is easy to affect the construction speed; second, due to technical prejudice, it is generally used As the conductor of flexible cables, copper not only has blindness in the rational use of raw materials, but also leads to high manufacturing costs for flexible cables; On the other hand, those skilled in the art often think that the filler in the communication power cable is only to keep the shape of the cable round, and often ignores that it has a positive impact on the electrical properties of the cable and the external conduction and heat dissipation.

High labor cost

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