A polyvinyl chloride insulated polyvinyl chloride sheathed control cable

Abstract

The invention discloses a polyvinyl chloride (PVC) insulation PVC sheathed control cable, which comprises first control conductors and second control conductors, wherein the cross section of each first control conductor is oval; the cross section of each second control conductor is round; the two second control conductors are arranged between the two first control conductors; the two first control conductors and the two second control conductors are arranged into a rhombus; a strengthened fiber rope is arranged between any adjacent first control conductor and second control conductor; the strengthened fiber rope is abutted against the corresponding first control conductor and second control conductor; a fire-resistant mica tape belting layer, a steel wire armoured shielding layer and a PVC sheathed layer are sequentially wrapped on the first control conductors and the second control conductors. The control cable is applicable to a broader alternating voltage circuit, different current-carrying capacities are satisfied, so that the insulation reliability of the control cable is greatly improved, and the service life of the control cable is prolonged.

Description

technical field [0001] The invention relates to the technical field of wires and cables, in particular to a polyvinyl chloride insulated polyvinyl chloride sheathed control cable. Background technique [0002] With the continuous and rapid growth of my country's economy, it provides a huge market prospect for the development of the cable industry. With the continuous expansion of industries such as electric power, communications, rail transit, automobiles, and shipbuilding, the demand for wires and cables is also growing rapidly. It can be predicted that the wires and cables industry will have huge development potential in the future. [0003] There are various control cables on the market, and they are used in various occasions. In the event of a fire, ordinary fire-resistant control cables cannot guarantee that the line will continue to work. In addition, due to the copper core copper sheathed magnesium oxide insulated cables on the market, due to the drawing process and...

AI Technical Summary

Problems solved by technology

At the same time, the current-carrying capacity of the cable is usually related to the cross-sectional area of ​​the conductor core. When the current increases, the temperature of the conductor will increase. When the temperature of the insulating layer covered by the conductor exceeds the upper limit, the performance of the insulating layer will change. As a result, the insulation reliability of the insulating layer is greatly reduced, which affects the service life of the cable

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