Aeril Insulated Centralized Cable, referred to as ABC. It adopts three-phase four-wire power supply mode, and each basic user point can obtain A、 B、 C three-phase power supply. It is a scientific and technological progress product that is mainly promoted and applied by the former State Power Corporation. China generally adopts a four-core system, and there are also non-insulated neutral slings and insulated neutral sling systems in foreign countries.

1. Reduce energy and improve voltage quality. Since the parallel bundle wires are closely and symmetrically distributed, especially when arranged in a square shape, the inductance of the wires is lowered, and the dielectric constant between the wires is increased, thereby reducing the reactive power loss and improving the low voltage quality.

2. Anti-electric shock, anti-theft electricity. Due to the multi-layer insulation package of the bundled wires, electric shock accidents and leakage trip accidents are reduced. At the same time, because of the special structure of the bundled wires, it is very difficult to steal electricity such as "T" connection and hook.

3. Simple construction. The bundled wire line erection does not need to assemble the cross arm and the fork table. The wire is not fixed by one root, and the sag does not need to be adjusted by one phase, so the construction is simple and the man-hour is saved.

4. The line is beautiful and simple, neat and tidy. Because the bundled wires are arranged neatly and the distance between the phases is small, this reduces the space span of the corridors and is suitable for use in townships, markets, rural streets, hutongs and relatively narrow residential areas.

5. The same bundle wire is insufficient, the wire is self-important and the load is heavy. Because the structure is strip-shaped, the wind pressure and ice load bearing surface are large, and the wire swing amplitude is large, so the power fittings and poles connected thereto are required to be higher.