Should the ADSS inbound optical fiber cable use AT or PE

Use PE sheath for low-voltage lines (10–35 kV) and AT sheath for high-voltage lines (110–220 kV) to ensure safety and durability. Sheath Types and Voltage RatingsPE (Polyethylene) Sheath: This is the standard outer jacket for ADSS cables, suitable for low-voltage power lines, typically 10 kV to 35 kV. It provides basic protection against environmental factors and is cost-effective for standard installations.

A

T (Anti-Tracking) Sheath: Designed for high-voltage power lines, usually 110 kV to 220 kV, the AT sheath offers enhanced resistance to electrical tracking, extreme weather, and temperature variations. It minimizes the risk of surface discharge and ensures long-term reliability in harsh conditions. Environmental and Installation ConsiderationsHigh-Voltage Lines: AT sheath is recommended because it withstands strong electric fields, ice, wind, and UV exposure, reducing the risk of cable degradation and tower load issues.

Low-

Voltage Lines: PE sheath is sufficient for moderate environmental conditions and lower electrical stress, making it a practical choice for cost-sensitive projects.

Self-

Supporting Installation: Both PE and AT sheaths are compatible with ADSS cables' self-supporting design, which eliminates the need for messenger wires and allows installation without power shutdown.

Practical Recommendation

For an inbound ADSS optical fiber cable: If the cable will be installed on 10–35 kV distribution lines, choose PE sheath. If the cable will be installed on 110–220 kV transmission lines, choose AT sheath to ensure anti-tracking performance and durability under high-voltage conditions. Selecting the correct sheath ensures electrical safety, mechanical reliability, and long-term performance of the ADSS cable in its intended environment.