In extreme climatic conditions, the stability of overhead fiber optic systems is challenged by various environmental factors. End-users must fully consider factors such as tension, temperature, humidity, and ultraviolet radiation when planning a cable installation project. This article delves into selecting the most suitable cable specifications and materials based on environmental parameters to ensure the system’s efficiency and reliability.

Tension Strategy:

Given the additional load from wind and snow, the tensile strength of the cable is crucial. An ideal overhead cable should have a minimum tensile strength of 4000 Newtons, necessitating internal reinforcement elements such as high-strength steel wires or aramid fibers to ensure stability over long spans. In areas particularly prone to snow accumulation, installing snow guards or other snow prevention devices can reduce snow accumulation on the cable. Additionally, establishing regular maintenance and inspection plans to timely clear snow and ice from the cable and check the integrity and stability of the cable and support structures is essential.

Temperature and Humidity Challenges:

Overhead cables must operate stably within a temperature range of -40℃ to +70℃. Outer sheath materials typically use High-Density Polyethylene (HDPE) or Polyvinyl Chloride (PVC), which maintain good physical properties within the mentioned temperature range. The cable’s humidity resistance tests should simulate high humidity environments, ensuring no performance degradation in conditions up to 95% humidity for 24 hours.

UV Protection Requirements:

Cables exposed to outdoor environments for extended periods need effective UV resistance. The addition of anti-UV stabilizers in the cable sheath can significantly extend the cable’s lifespan. After 720 hours of accelerated UV aging tests, the cable should exhibit no significant performance changes, maintaining excellent physical and optical properties.

Based on the above analysis, it is recommended that end-users select cables with the following specifications:

Tensile Strength: ≥4000 Newtons

Temperature Adaptability Range: -40℃ to +70℃

Humidity Resistance: Stable under 95% humidity

UV-resistant Sheath: Passing 720 hours of UV aging tests

Choosing cables that meet these high standards, combined with a professional wiring plan, can significantly enhance the stability and long-term reliability of overhead fiber optic systems in harsh weather conditions, ensuring continuous communication network flow.