ADSS (All-Dielectric Self-Supporting) cables are commonly used in telecommunication and power distribution networks. These cables are designed to be installed in aerial environments, typically on overhead utility poles, without the need for a separate messenger wire. Here are the general package and construction requirements for ADSS cables:
1. Design and Construction:
All-Dielectric: ADSS cables are made entirely of dielectric (non-conductive) materials. The absence of metallic components eliminates the need for grounding.
Strength Elements: Aramid yarns or fiberglass rods provide the necessary tensile strength to support the cable’s weight over spans between support structures.
Central Tube or Core: Optical fibers are usually housed within a central tube or core made of dielectric material. This design protects the fibers from environmental factors.
Buffer Tubes: Optical fibers are placed inside buffer tubes within the cable for additional protection against bending, crushing, and environmental conditions.
2. Cable Package:
Nominal Size and Weight: ADSS cables come in various sizes and weights to accommodate different spans and installation requirements. The specifications for a particular cable will include its diameter, weight per unit length, and other relevant dimensions.
Fiber Count: The number of optical fibers within the cable is a critical specification. Fiber counts can range from a few fibers to several hundred fibers, depending on the capacity needs of the network.
Outer Sheath: The outer sheath of the cable provides protection against environmental factors such as UV radiation, moisture, and temperature variations.
3. Installation Requirements:
Installation Temperature: ADSS cables must be installed within a specified temperature range to ensure proper handling and installation.
Bending Radius: The cable’s specifications will include minimum bending radius requirements, ensuring that the cable is not subjected to excessive stress during installation or while in service.
Installation Tension: Guidelines for the proper tension during installation help prevent damage to the cable and ensure its long-term reliability.
Support Structures: ADSS cables are designed to be self-supporting, and they are typically installed on existing utility poles or towers. The spacing and type of support structures are important considerations for proper installation.
4. Testing and Inspection:
Quality Assurance: Manufacturers often conduct quality assurance tests on ADSS cables to ensure they meet specified performance standards.
Optical Testing: Optical testing, such as OTDR (Optical Time-Domain Reflectometer) testing, may be performed to verify the integrity of the optical fibers within the cable.
Post time: Dec-15-2023