adss vs opgw

Comparison Between ADSS and OPGW Cables

ADSS (All-Dielectric Self-Supporting) and OPGW (Optical Ground Wire) are two common types of fiber optic cables used in power communication networks. They are designed for different installation conditions and voltage levels. Below is a detailed comparison between them.

ADSS (All-Dielectric Self-Supporting)

ADSS cables are fully dielectric and contain no metallic elements. They can be installed directly on existing power line structures without the need for grounding or electrical bonding.

Advantages

• Electrically non-conductive, immune to lightning and electromagnetic interference
• Easy and fast installation, can be installed on live lines
• Suitable for distribution and lower-voltage transmission lines (≤110 kV)
• Lower installation cost, no power outage required

Limitations

• Limited mechanical strength, not suitable for very long spans
• May suffer from tracking and erosion under very high electric fields (≥220 kV) unless specially jacketed

OPGW (Optical Ground Wire)

OPGW combines metallic ground wire and optical fibers in one cable. It is usually installed at the top of high-voltage transmission towers, providing both communication and lightning protection.

Advantages

• Provides both lightning protection (as shield wire) and fiber communication
• High mechanical strength, suitable for long spans
• Suitable for high-voltage transmission lines (≥132 kV)
• Long service life (>30 years)

Limitations

• Conductive, requires electrical bonding and grounding
• Usually requires line outage for installation
• Heavier and more complex to install, higher cost

ADSS vs OPGW Comparison Table

Summary

If you need a lightweight, non-conductive fiber cable for quick and low-cost installation on distribution or lower-voltage lines, ADSS is recommended.
If you are building or upgrading high-voltage transmission lines and want both lightning protection and fiber communication in one cable, OPGW is the better choice.