The Classification Of The Power Cable

1.The power cables are classified according to the voltage level

Power cables are usually made according to a certain voltage level,voltage levels is 0.5kv, 1kv,3kv,6kv,10kv,20kv,35kv,60kv,110kv,220kv,330kv. Among them 1kV voltage level of the power cable is most used. 3 ~ 35kV voltage level of power cables in large and medium-sized buildings are often used in the main power lines. 60 ~ 330kV voltage level of power cables used in which not appropriate use the overhead lines and the transmission lines across the river, submarine laying and other occasions.

2.The power cables are classified according to the wire core cross-sectional area

Conductive core of the power cable is in accordance with a certain level of nominal cross-sectional area of manufacture, easy to manufacture and design and construction selection. China's power cable nominal cross-sectional area series is 2.5,4,6,10,16,25,35,50,70,95,120,150,185,240,300,400,500,600 mm2, a total of 19 species.High-pressure oil-filled cable nominal cross-sectional area series specifications for 100,240,400,600,700,845 mm2 ,a total of six species. Multi-core cables are the largest section of the phase line shall prevail.

3.The power cables are classified according to the number of conductors core

Power cable conductive core line has 1 to 5 core 5 kinds. Single-core cable used for the transmission of single-phase AC, DC and special occasions (high-voltage motor leads). Two-core cable used for the transmission of single-phase AC or DC. Three-core cable used for three-phase AC power grid, widely used in the following 35kV cable lines.