Ethylene propylene rubber insulated control cable

Abstract

The invention relates to an ethylene propylene rubber insulated control cable which includes a main wire core and a plurality of small wire cores stranded together with the main wire core as the center to form a cable core. The main wire core and the small wire cores each include a conductor and an ethylene propylene rubber insulation layer arranged outside the conductor by means of extrusion. An inner isolation layer is arranged outside the cable core by means of extrusion. The gap between the inner isolation layer and the cable core is filled with a low-smoke halogen-free oxygen separation material. An isolation lubricating layer is arranged outside the inner isolation layer. A copper wire braided shielding layer and a sheath are arranged outside the isolation lubricating layer sequentially from inside to outside. The ethylene propylene rubber insulated control cable has a reasonable structure. Through use of lubricating grease, the internal flexibility can be improved in the transporting and using processes of the cable, and wear caused by friction between internal components can be reduced. Therefore, the cable is well protected, and the service life of the cable is prolonged.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to an ethylene-propylene rubber insulated control cable. Background technique [0002] Control cables are suitable for industrial and mining enterprises, energy and transportation departments, and for occasions such as controlling and protecting lines with AC rated voltage below 450 / 750 volts. People's communications, electricity consumption, instrument control, etc. are inseparable from cables. The wire and cable industry is the second largest industry in China after the automobile industry. The product variety satisfaction rate and domestic market share both exceed 90%. [0003] With the rapid development of China's wire and cable industry, the number of new enterprises has been increasing, and the overall technical level of the industry has been greatly improved. There are many kinds of wire and cable products, among which control cables are mainly suitable for electric power, me...

AI Technical Summary

Problems solved by technology

[0004] However, in daily use, it is inevitable that the control cable will be bent or dragged, and the bending radius of the control cable is limited. Once the bending radius is less than the allowable bending radius, the cable skin will be broken or the inner conductor of the cable will be broken. In such a harsh environment, It is very easy to corrode the inside of the cable, making the cable unusable, and causing the instrument or automation control system to fail to work normally, affecting people's normal life

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