Self-Supporting Pair Cables

Self-supporting multi-pair cable: HYAC and HYYC. The self-supporting design embeds multi-strand galvanized steel wire as a messenger inside the cable, allowing aerial installation without additional support and simplifying construction. In the type code, H stands for local (urban) telecommunication cable, Y for polyethylene insulation, A for aluminum-plastic composite sheath, and C for self-supporting construction. Conductor diameter is available in various sizes such as 0.4-0.9 mm; at 20 °C, DC resistance of the 0.5 mm² conductor is ≤ 95 Ω/km and insulation resistance ≥ 3000 MΩ·km, with an operating temperature of -30 °C to +60 °C. The cable is mainly used for communication backbones in towns and villages, cabling in large parks and campuses, and urban-rural fringe areas, and is suited to aerial installation.