Auxiliary suspension wires serve as support structures for aerial optical cables, such as ADSS (All-Dielectric Self-Supporting) and OPGW (Optical Ground Wire) cables. They help bear the mechanical load of the cable, reduce bending stress, and protect the optical fibers from damage caused by wind, vibration, or thermal expansion . These wires are often installed alongside the main cable to provide additional support at towers, poles, or corner points, ensuring the cable maintains its proper curvature and tension .
According to ITU-T Recommendation L.89, auxiliary suspension wires and supporting poles must be designed to withstand vertical loads, wind, ice, and other environmental stresses. Proper design ensures the reliability of broadband services and the safety of high-position installations . The suspension system must maintain the cable's minimum bend radius and prevent excessive tension that could compromise optical performance .
Auxiliary suspension wires are essential for mechanical support, stress reduction, and long-term reliability of aerial optical cables. When combined with suspension clamps, tension clamps, and vibration control devices, they ensure safe installation, minimal fiber loss, and protection against environmental stresses, making them a critical component in modern communication networks .
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Recommendation ITU-T L.89 describes the general requirements and a design guide for suspension wires, telecommunication poles
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