48 Core OPGW Cable 120mm² – Heavy Duty Optical Ground Wire for Power Transmission

Overview

The 48 Core 120mm² OPGW Cable is a heavy-duty optical ground wire engineered for modern power transmission systems requiring both electrical shielding and high-capacity fiber communication.

Designed with a reinforced stainless steel optical unit, this OPGW configuration provides enhanced tensile strength and improved durability, making it ideal for long-span overhead installations and high mechanical load environments.

The cable integrates optical fibers directly into the earth wire of transmission lines, enabling utilities to deploy secure communication networks without installing additional telecom infrastructure.

Why Choose 120mm² OPGW?

Compared with smaller cross-section OPGW cables, the 120mm² design offers:

• Higher mechanical strength for long-span towers

• Improved short-circuit current capacity

• Better resistance to wind and ice loading

• Increased reliability in high-voltage transmission corridors

• Stable fiber protection during extreme environmental stress

This makes it suitable for 220kV, 330kV, and 500kV transmission lines.

Structural Design

This cable adopts a central optical unit surrounded by stranded conductive layers, ensuring optimal balance between electrical and optical performance.

Construction Elements

• 48 single-mode optical fibers

• Hermetically sealed stainless steel optical tube

• Thixotropic water-blocking compound

• Aluminum-clad steel wires

• Outer conductive stranded layer

The sealed structure prevents moisture ingress and protects fibers from vibration and mechanical compression.

Technical Parameters

Optical Performance

The internal fiber unit ensures minimal attenuation variation even under mechanical strain.

Typical characteristics include:

• Low attenuation over long-distance transmission

• Stable signal performance under tensile loading

• Suitable for backbone utility communication networks

• Compatible with DWDM and high-bandwidth systems

Typical Applications

The 48F 120mm² OPGW cable is widely deployed in:

• National power grid communication systems

• High-voltage transmission networks

• Smart grid monitoring platforms

• Renewable energy interconnection projects

• Substation communication links

• Utility SCADA and protection systems