Direct-Buried Pair Cables

Outdoor direct-burial multi-pair cable: in types WDZB-HYA22, HYA23, HYA53, HYAT22, HYAT23 and HYAT53, H stands for local (urban) telecommunication cable, Y for polyethylene insulation, A for aluminum-plastic composite sheath, and 53 for steel-plastic tape armored PE jacket. Conductor diameter is 0.32-0.8 mm with 10-1000 pairs; at 20 °C, DC resistance of the 0.5 mm conductor is ≤ 95 Ω/km and insulation resistance ≥ 10000 MΩ·km, with an operating temperature of -30 °C to +60 °C. The cable suits telecommunications lines with demanding crush resistance requirements, and can be directly buried, installed aerially or in ducts. It is especially suitable for harsh environments prone to mechanical damage and corrosion.