Power cable for 0.6/1kv and lower voltage

Abstract

The invention discloses a power cable for 0.6 / 1kv and lower voltage comprises a cable core. The gap of the cable core is provided with a fiber filling layer. A terpolymer EP rubber insulating layer, a calcined mica tape wrapping layer, a steel band armoring layer, a chlorosulfonated polyethylene outer jacket and an elastic buffer layer are successively arranged outside the cable core. The cable core is composed of a rectangular supporting frame at the center of the cable, a ground wire and four main cores, wherein the center of the rectangular supporting frame is provided with a circular hole. Four sides of the rectangular supporting frame are provided with inwards concave semicircular grooves. The ground wire is correspondingly placed in the circular hole. The four main cores are placed in the four semicircular grooves, wherein the main wire core is obtained through intertwisting a central elastic rod and single wires which are arranged outside the elastic rod and wrapping an insulating shielding layer. The power cable has advantages of high aging resistance, high corrosion resistance, high vapor resistance, high superheated water resistance, high electrical insulating performance, high corona resistance, high elasticity, etc.

Description

technical field [0001] The invention relates to the field of cables, specifically a low-voltage power cable, which is mainly applicable to voltage levels of 0.6 / 1kv and below. Background technique [0002] At present, the construction market, especially the buildings in the main public places, has higher and higher requirements for fire protection. It is required that the low-voltage power cables with fire resistance performance not only do not burn themselves, do not spread and expand the fire, but also require fire resistance in the case of flames, water and vibrations. Under normal power transmission, to win precious time for fire fighting and rescue of people's lives and property. Traditional fireproof cables generally use mineral insulation (magnesium oxide) and copper tube sheaths. Although they have certain fireproof performance, there are many problems. These problems are mainly due to the short length of manufacture. The core conductor makes the cable hard, difficu...

AI Technical Summary

Problems solved by technology

Traditional fireproof cables generally use mineral insulation (magnesium oxide) and copper tube sheaths. Although they have certain fireproof performance, there are many problems. These problems are mainly due to the short length of manufacture. The core conductor makes the cable hard, difficult to bend and straight, difficult to connect, easy to get damp at the end of the cable, reduces insulation resistance, consumes a lot of copper, and has high cost, which seriously affects the use and promotion of fireproof cables; in addition, the existing Once the low-voltage cable is squeezed or crushed by a car, it is very easy to break the core

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