Outdoor Large Pair Cables

The core models of outdoor multi-pair cable include HYA, HYAT, HYAC and HYAT53. In the type code, H stands for local (urban) telecommunication cable, Y for polyethylene insulation, A for aluminum-plastic sheath, T for petroleum jelly (flooding compound) filling, C for self-supporting construction, and 53 for steel tape armor. Conductor diameter is 0.4-0.9 mm with 5-3000 pairs; at 20 °C, resistance of the 0.4 mm conductor is ≤ 148 Ω/km and insulation resistance ≥ 3000 MΩ·km, with an operating temperature of -30 °C to +60 °C. The cable suits urban backbone communication networks, township and rural lines, and outdoor campus cabling. It supports direct burial, aerial and duct installation, and is suited to voice and low-speed data transmission in complex outdoor environments.