What are the key differences between ADSS and OPGW fiber optic cables for power line projects?

2025-08-07

The choice between All-Dielectric Self-Supporting (ADSS) and Optical Ground Wire (OPGW) cables is crucial for communication networks on power lines. At Ningbo Changshi, we understand these distinct technologies and provide the necessary equipment for their installation.

ADSS Cable (All-Dielectric Self-Supporting)

  • Function: An ADSS cable is a communication cable dedicated solely to data transmission. Its primary advantage is its all-dielectric, non-metallic structure.

  • Structure: Made entirely of non-conductive materials, it is immune to electromagnetic interference and can be installed in a high-voltage environment without any risk of grounding or arcing.

  • Best Use: Perfect for adding communication capabilities to existing power lines without a power outage. Its lightweight design allows for flexible and cost-effective installation on live distribution and transmission lines.

OPGW Cable (Optical Ground Wire)

  • Function: This is a dual-purpose cable that serves as both a data transmission medium (containing optical fibers) and an overhead ground wire for lightning protection. It is installed at the highest point of a transmission tower to shield the power conductors.

  • Structure: OPGW is a composite cable with a metallic component that provides strength and conductivity. This design makes it robust but requires a power outage for installation as it replaces an existing ground wire.

  • Best Use: Ideal for new transmission lines or when replacing an aging ground wire, as it consolidates two functions into one cable, providing both communication capabilities and essential lightning protection.

To support your project, Ningbo Changshi Electric Power Machinery Manufacturing Limited offers a comprehensive range of overhead transmission line (OHTL) stringing equipment and tools specifically designed for the secure and efficient installation of both OPGW and ADSS cables.

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