power cables

Power cables are cable products used to transmit and distribute high-power electrical energy in the main lines of the power system, including power cables with various voltage levels ranging from 1 to 330kV and above, and various insulation. The cross-section is divided into 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240, 300, 400, 500, 630, and 800mm2, with 1, 2, 3, 4, 5, and 3+1 cores.

Main characteristics of power cables

extruding (winding) an insulation layer outside the conductor, twisting several cores (corresponding to the phase, zero, and ground wires of the power system), and adding a protective layer, such as plastic/rubber sheathed wires and cables. The main process technologies include drawing, stranding, insulation extrusion (wrapping), cable forming, armor, sheath extrusion, etc. The different process combinations of various products have certain differences.

Classification of power cables

 low-voltage cables, medium voltage cables, high-voltage cables, etc. according to voltage levels. According to insulation conditions, it can be divided into plastic insulated cables, rubber insulated cables, mineral insulated cables, etc.  1. Low voltage cable: i.e. voltage level 0.6/1kV ①, aluminum core (/copper core) cross-linked polyethylene insulated (steel tape armored) polyvinyl chloride sheathed power cable, Aluminum core (/copper core) cross-linked power cables YJV, YJLV, YJV22, YJLV22 (XLPE insulation, model description: Aluminum core cross-linked polyethylene insulation, steel tape armor, PVC sheath.  YJ cross-linked polyethylene insulation, L aluminum core, V polyvinyl chloride sheath, 22 steel tape armor (single core cable is represented as 62, i.e. non magnetic armor tape), representation method: YJV, YJLV, YJV22, YJLV22 (with 1-5 cores)