The Difference Between High Voltage Cables And Low Voltage Cables

Here, low-voltage cables and high-voltage cables are distinguished from a structural perspective, voltage level, insulation layer thickness and production process:
Structural perspective: The structure of low-voltage cables is relatively simple, usually consisting of conductors, fillers, insulation layers and protective sheaths. The structure of high-voltage cables is relatively complex, including conductors, insulation layers, inner sheaths, fillers (armoring) and outer insulation.
Voltage level: Low-voltage cables are mainly used to transmit electric energy below 1kv. High-voltage cables refer to cables with a rated voltage greater than 35kV and are mainly used for power transmission in the power grid. Low-voltage cables are suitable for electrical appliance connections, indoor lighting and other fields.
Production process: Low-voltage cables can be manufactured using ordinary polyvinyl chloride and cross-linked polyethylene. There is a difference between cross-linked and ordinary polyethylene. High-voltage cables can only be made of cross-linked polyethylene. In cables from 6kv to 35kv, the production process of three-layer co-extrusion and high-density cross-linked polyethylene is often used. The insulation thickness of low-voltage cables and high-voltage cables is also different.