VLV-0.6-1KV-3X70 + 2X3
Basic structure of power cable :
The basic structure of a power cable consists of a core (conductor), an insulation layer, a shield layer, and a protective layer.
The core is the conductive part of the power cable and is used to transport electrical energy. It is the main part of the power cable.
Insulation layer is to electrically isolate the core from the ground and cores of different phases from each other to ensure the transmission of electrical energy. It is an indispensable part of the power cable structure.
15KV and above power cables generally have conductor shields and insulation shields.
The protective layer
The role of the protective layer is to protect the power cable from the invasion of foreign impurities and moisture, and to prevent external power from directly damaging the power cable.
Main advantages of power cables
1 occupies less land. It is usually buried in the soil or laid indoors, in trenches and tunnels, the insulation distance between lines is small, no towers are used, it occupies less land, and basically does not occupy space on the ground.
2High reliability. Affected by climatic conditions and surrounding environment, transmission performance is stable and reliability is high.
3 It has more favorable conditions for the development of ultra-high voltage and large capacity, such as low temperature and super-conductive cables.
4 Large distributed capacitance.
5 Low maintenance workload.
6 The possibility of electric shock is small.