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Overhead cable

Primarily used in the energy and power sectors.

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Overhead cables represent a new transmission method that bridges the gap between overhead conductors and underground cables. Introduced in 1984, they are now primarily used in the energy and power sectors. These cables are manufactured using cross-linked cable technology and come equipped with an insulation layer and a protective outer sheath. Depending on their structural design, they can be categorized into single-core types—such as hard aluminum wire, hard-drawn copper wire, and aluminum alloy wire—as well as steel- or aluminum-alloy-core-supported structures. Additionally, there’s a self-supporting three-core stranded configuration available. This type of cable boasts several key advantages: high power supply reliability, excellent safety, convenient installation and maintenance, and cost-effectiveness. In fact, its reliability in delivering power is 4 to 6 times greater than that of traditional bare conductors, while also offering flexibility in installation options—whether via pole-mounted systems or wall-mounted configurations. The core technologies behind these cables include weather-resistant insulation formulations, optimized insulation thickness designs, and semi-conductive shielding layers, all of which ensure stable performance even in challenging environmental conditions. Since the 1980s, China has successfully scaled up the production of these cables, making them a popular choice for urban grid modernization projects nationwide.