Long Span Customized Double Jacket All-Dielectric Self-Supporting (ADSS) Optical Fiber Cable 2-288 Core

Long Span Customized Double Jacket All-Dielectric Self-Supporting (ADSS) Optical Fiber Cable 2-288 Core

Note: Structure can be customized for different spans.

Description

This long-span customized double-jacket ADSS optical fiber cable is a high-performance all-dielectric communication cable designed for long-span aerial laying scenarios (no metallic components, avoiding lightning strike and electromagnetic interference risks). 

The double-jacket structure is customized to enhance mechanical strength, environmental resistance and wear resistance, and the core count is flexible (2–288 core) to meet the diversified bandwidth requirements of long-distance trunk communication, power system dispatching, and large-scale industrial park networking. 

It integrates the advantages of self-supporting aerial laying (no need for additional steel catenary), all-dielectric insulation, and long-span mechanical bearing capacity, and is a customized solution for harsh aerial laying environments and long-span crossing needs.

Features

• It can be installed directly on the poles or towers without additional support wire.
  

• Self-supporting structure reduces costs, easy for installation and maintenance

• All-dielectric no-metal components, anti-lightning strike, anti-electromagnetic/radio frequency interference, safe for laying near high-voltage lines;
  

• Light weight and small diameter reducing the load caused by ice and wind

• Large span length and the largest span is up to 800 meters

• Good tensile strength and temperature performance

Application

The double sheathed ADSS cable is a customized long-span aerial communication solution for 2–288 core bandwidth needs, suitable for all-scenario aerial laying without metallic support, with core application fields covering power system, public communication, industrial and municipal networking, especially for long-span crossing scenarios. Specific applications are as follows:

1. Power System Communication

2. Public Telecommunication Trunk Network

3. Industrial and Large-Scale Park Networking

4. Municipal and Cross-Regional Communication

Technical Parameter (Span 300m for reference)

Cable Structure

ADSS Double Jacket

ADSS cable Cross Section

The structure is optimized for long-span stress bearing and environmental protection, with a double-jacket + reinforced all-dielectric strength member core design; each layer is tailored to the 2–288 core count and long-span laying requirements, the specific layered structure (from inside to outside) is as follows:

1. Optical Fiber Unit (2–288 Core)

• Fiber Core type: Single-mode (SMF G.652D/G.657A1/A2, mainstream for long-distance communication) or multi-mode (OM3/OM4, for short-distance high-speed transmission); core arrangement is loose tube stranding to ensure fiber microbending resistance and mechanical protection.

• Loose tube material: High-modulus PBT (polybutylene terephthalate), filled with waterproof compound to prevent water ingress and buffer fiber stress from temperature change/mechanical stretching.

  
  

2. Cable Core Water Blocking Layer

• Wrapped with water-blocking tape and filled with water-blocking yarn around the loose tube unit, forming a full-section water-blocking structure to prevent longitudinal water seepage and protect optical fibers from moisture erosion in outdoor harsh environments.

  
  

3. All-Dielectric Central Strength Member (CSM) / Tensile Reinforcement Layer

• Customized high-strength FRP (Fiber Reinforced Plastic) and aramid yarn (Kevlar) as the main strength member: FRP provides rigid tensile support, aramid yarn offers flexible high tensile strength and impact resistance.

• The strength member is centrally placed or symmetrically arranged to bear the main tensile stress of long-span aerial laying (resist wind load, ice load, self-weight tension), ensuring no fiber strain under long-span conditions.

  
  

4. Inner Jacket (First Protection Layer)

• Material: medium-density polyethylene (MDPE) with anti-UV and anti-aging additives; tightly extruded on the cable core to fix the strength member and optical fiber unit, and provide primary protection against mechanical wear and environmental corrosion.

• Thickness: Customized according to long-span stress and laying environment (0.8–1.5mm), ensuring adhesion with the cable core and no delamination with the outer jacket.

  
  

5. Outer Jacket (Second Protection Layer)

• Material: Special anti-abrasion/anti-ozone HDPE or LSZH (Low Smoke Zero Halogen) (customizable for fireproof scenarios); added with high-content carbon black (≥2.0%) for UV resistance, suitable for long-term outdoor exposure.

• Function: The double-jacket structure forms a "dual protection barrier"—resists aerial friction (with poles, cross-arms), animal gnawing, chemical corrosion (industrial area), and extreme temperature change (-40℃ to +70℃); the outer jacket is also designed with a smooth surface to reduce wind resistance (critical for long-span anti-wind load).

  
  

6. Optional Extruded Layers/Markings

• Anti-tracking layer: Customized for high-altitude/high-humidity areas (e.g., coastal, rainy areas) to prevent surface electric tracking and aging;

• Marking: Print core count, model, manufacturer, laying direction on the outer jacket for on-site construction and maintenance (can be customized).

  
  

Key Structural Customization for Long Span

• Higher strength member ratio: Increase aramid fiber/FRP content to improve the cable’s ultimate tensile strength (UTS) and elastic modulus, adapting to long-span tension (span length can be customized from 100m to 800m according to load requirements);

• Thicker double jacket: Optimize inner/outer jacket thickness ratio for long-span dynamic load (wind/ice vibration) resistance;

• Reinforced loose tube: Thicker PBT loose tube wall to prevent fiber damage from long-term micro-stretching.

Packaging & Shipping

Reel Length:

2km, 3km, 4km, 5km (optional)

Drum Options:

• Fumigated Wooden Drum

• Plywood Drum

• Steel-reinforced Wooden Drum

Shipping Pictures: