Power cable The basic structure of the power cable is
composed of four parts, the core (conductor), the insulating layer,
the shielding layer and the protective layer. Cable for transmission and distribution of
electrical energy. Commonly used in the city underground power
grid, the lead line of power station, the internal power supply of
mining enterprises, over the river, over the sea water transmission
line. In power lines, the proportion of cables is gradually
increasing. Power cable is the main cable in the power system in
order to transmit and distribute electrical energy, including
****0KV and above all kinds of voltage levels, all kinds of
insulated power cable. According Voltage rating: 1.
Low voltage cable: suitable for fixedly installed in AC *0Hz, rated
voltage 3KV and below transmission lines for power
transmission. 2.
Middle and low voltage cable: (general *5KV and below): PVC
insulated cables, polyethylene insulated cables, cross-linked
polyethylene insulated cables, etc.. 3.
High voltage cable: (general **0KV and above): PE cable and
cross-linked polyethylene insulated cable, etc.. 4.
Ultra high voltage cable: (**5~**0 kV). 5.
Extra-high-tension cable: (***0KV and above). Executive standard:
GB/T*********8
