ADSS Double Jacket Fiber Optic Cable Span 200m/300m

ADSS Overhead Outdoor Fiber Optic Cable Double Jacket SPAN 200m/300m

Description:

ADSS is defined by two essential attributes:

• All-Dielectric: No metallic components (e.g., steel wires, copper shielding) are used. This eliminates electrical conduction, avoiding induced currents from nearby high-voltage power lines (a critical safety feature for power grid applications).

• Self-Supporting: Its structural design provides sufficient tensile strength and rigidity to be installed independently (e.g., strung between power towers) without relying on additional support cables.

ADSS Double-Jacket cable is specially designed for long span.

ADSS (All-Dielectric Self-Supporting) double-jacket fiber optic cable is an enhanced variant of standard ADSS cables, designed to address stricter requirements for mechanical durability, environmental resistance, and long-term reliability—especially in harsh outdoor or high-stress deployment scenarios. Its core innovation lies in the addition of a second protective outer sheath, which reinforces the cable's ability to withstand physical damage, chemical erosion, and extreme weather, while retaining the "all-dielectric" and "self-supporting" attributes of standard ADSS.

Structure:

The structure of ADSS double-jacket cable builds on the layered design of standard ADSS, with the key modification being the dual outer sheath.

ADSS Double Sheath

ADSS-24C Double Jacket

Features:

(1) All-Dielectric Design: excellent electrical insulation properties and resistant to electromagnetic interference. This makes it ideal for installation in areas with high-voltage power lines or other electromagnetic-interference-prone environments, eliminating the need for expensive cable shielding and grounding measures.

(2) Self-Supporting Capability: The ADSS cable can support itself without the need for an additional support messenger. This simplifies the installation process and reduces installation costs, saving space.

(3) Wide Temperature Range: usually from - 40 °C to 70 °C. This allows it to be used in various climatic conditions, from cold regions to hot and humid environments, ensuring the stability and reliability of optical signal transmission.

(4) Small Diameter and Light Weight: easy to handle and install, reducing the impact of wind and ice on the cable during operation.

ADSS double-jacket cable inherits all advantages of standard ADSS (electrical safety, self-support, high bandwidth) while adding unique benefits from its dual-sheath design.

1. Enhanced Environmental Resistance

• Superior UV Protection: The outer sheath (typically UV-stabilized HDPE) is formulated with antioxidants and UV absorbers to resist photo-oxidation—critical for long-term use in sunny regions (e.g., deserts, equatorial areas) where single-jacket cables may degrade (crack, become brittle) within 10–15 years.

• Extreme Temperature Tolerance: The dual-sheath structure (e.g., HDPE outer + MDPE inner) expands/contracts uniformly under temperature fluctuations (-40°C to +70°C), reducing stress on internal fibers and avoiding signal loss from micro-bending.

• Chemical & Corrosion Resistance: The outer sheath resists industrial chemicals (e.g., sulfur dioxide, ammonia), salt spray (coastal areas), and acid rain—making it suitable for near-power plants, refineries, or coastal power grids.

2. Improved Mechanical Durability

• Abrasion & Impact Resistance: The thick, high-density outer sheath withstands abrasion from wind-blown debris (e.g., sand, branches) or accidental contact during maintenance (e.g., tools, tower components)—a common failure point for single-jacket cables.

• Rodent & Wildlife Protection: HDPE outer sheaths are harder and more resistant to chewing by rodents (e.g., squirrels) or pecking by birds, which can damage single-jacket cables and cause outages.

• Delamination Prevention: The inner sheath (e.g., MDPE) is chemically compatible with the outer sheath, ensuring strong adhesion and avoiding layer separation (a risk in low-quality dual-sheath designs), which could expose internal components to moisture.

3. Retained ADSS Advantages

• All-Dielectric Safety: No metallic components (e.g., steel wires) eliminate induced currents from high-voltage (HV) power lines, preventing equipment damage and electric shock risks—essential for power grid applications.

• Self-Supporting Convenience: High-strength aramid/GFRP strength members enable direct installation on power towers or utility poles without additional support cables, reducing installation time and costs.

• High Bandwidth & Low Loss: Uses single-mode fibers with low attenuation (~0.18 dB/km at 1550 nm), supporting 100 Gbps+ data transmission over 100+ km—ideal for smart grids and long-distance telecom.

Applications:

(1) Telecommunications Networks: It is widely used in long-distance and local-area telecommunications networks to transmit high-speed data, voice, and video signals. It can be used for backbone network connections, access network connections, and connections between base stations in mobile communication networks.

(2) Power Communication Networks: In the power industry, ADSS cables are often used to construct communication networks for power system automation, substation monitoring, and dispatching control. The all-dielectric design of the cable ensures reliable communication in high-voltage power line environments without being affected by electromagnetic interference.

(3) Broadband Access Networks: With the development of broadband access technologies, ADSS cables are also used in some rural and remote areas to provide high-speed broadband access services. They can be installed on existing power poles or communication poles to achieve the expansion and upgrading of broadband networks.

Installation and Maintenance:

• Installation: The installation of ADSS cables requires the use of specialized installation tools and techniques. During installation, it is necessary to pay attention to the tension and sag of the cable to ensure that the cable is properly installed and does not exceed its mechanical strength limit. In addition, the installation process should avoid damage to the cable jacket and optical fibers.

  
  

• Maintenance: Regular inspections and maintenance of ADSS cables are required to ensure their normal operation. Maintenance items include checking the appearance of the cable for damage, wear, and aging, as well as testing the optical performance of the cable to ensure that the signal transmission quality meets the requirements. If problems are found, timely repair or replacement measures should be taken.