Aerial cables (full name aerial insulated cables) are overhead conductors equipped with an insulating layer and a protective sheath. They are a special cable manufactured using a production process similar to cross-linked cables. They are a new type of power transmission between overhead conductors and underground cables. Way.Aerial cables are all single-core. According to their different structures, they 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 textured structures (wire structures). The core can be hard aluminum or hard copper wire), etc.It has the main characteristics of high power supply reliability, good power supply security, convenient erection and maintenance, and reasonable economy.Its main technical parameters include weather resistance, insulation level, inner and outer semi-conductive shielding layers.