Main characteristics of overhead insulated cable

There are two kinds of conductors for the overhead insulated cable: aluminum core and copper core. In the distribution network, aluminum is relatively light and cheap, and the requirements for line connectors and supports are low. In addition, the original distribution network is also dominated by ACSR conductor, and aluminum cored wire is selected to facilitate the connection of the original network. Aluminum core wire is also used in practical use. Copper core wire is mainly used as the downlead of transformer and switchgear.

1. Good insulation performance

Due to an additional layer of insulation layer, the overhead insulated cable has superior insulation performance than the bare conductor, which can reduce the distance between lines, reduce the insulation requirements for line supports, and improve the number of circuits of lines erected on the same pole.

2. Good corrosion resistance

Due to the insulating layer on the outer layer of overhead aerial bundled cable, it is less subject to oxidation and corrosion than bare conductor, and has strong corrosion resistance, which can prolong the service life of the line.

3. Prevent external force damage

Reduce the influence of external factors such as trees, flying metal film and dust, and reduce phase to phase short circuit and grounding accidents.

4. The strength meets the requirements

Although the insulated conductor has less steel core, it is tough, so that the mechanical strength of the whole conductor can meet the requirements of stress design.

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