Overhead insulated cable

Overhead insulated cables are overhead conductors equipped with an insulating layer and protective sheath. They are a type of specialized cable manufactured using a process similar to that of cross-linked cables. They represent a new transmission method between overhead lines and underground cables. Overhead cables are all single-core and, according to their different structures, can be divided into hard aluminum wire structures, hard-drawn copper wire structures, aluminum alloy wire structures, steel-core or aluminum alloy core support structures, and self-supporting three-core stranded structures (the conductors can be hard aluminum or hard copper wires). They have main characteristics such as high power supply reliability, good power supply safety, ease of installation and maintenance, and reasonable economy.