OPwG optical cable 48 cores

A 48-core OPGW cable combines lightning protection and high-speed optical communication in a single overhead power line installation, suitable for high-voltage transmission and smart grid applications.

Overview

OPGW (Optical Ground Wire) is a dual-function cable installed on high-voltage transmission towers, serving as both a grounding conductor and a fiber-optic communication pathway. The 48-core configuration provides enhanced communication capacity, making it ideal for long-distance data transfer, power line monitoring, and smart grid systems .

Construction Types

1. Aluminum-Clad Steel (ACS) Design
   • Central loose tube containing optical fibers, surrounded by aluminum-clad steel wires.
   • Lightweight with moderate tensile strength, cost-effective, suitable for standard transmission lines in normal environments.
   • Customizable fiber mix (e.g., G.652D + G.655), outer sheath, and armor layers .
2. Stainless Steel Tube (SS Tube) Design
   • Fibers housed in a stainless steel tube with steel wire armor.
   • High tensile strength, corrosion-resistant, suitable for coastal, industrial, or extreme environmental conditions.
   • Provides superior protection against moisture, lightning, and mechanical stress .

Fiber and Performance

• Typically uses single-mode fibers (G.652.D or G.655) with high-purity silica and germanium doping.
• Fibers are coated with UV-curable acrylate for primary protection.
• Designed to withstand short-circuit currents, lightning strikes, and mechanical loads.
• Hermetically sealed tubes in aluminum designs offer low attenuation drift under thermal cycling, ideal for humid or coastal regions .

Applications

• High-voltage lines: 110 kV, 220 kV, 500 kV, and above.
• Long-span transmission lines (>250 m).
• Smart grid monitoring, power line protection, unmanned substation communication, and data transmission for voice, video, or telemetry systems.
• Replacement of conventional ground wires on existing lines while adding fiber communication capability .

Installation Considerations

• OPGW is mounted directly on transmission towers, replacing traditional static/shield wires.
• Construction often requires temporary power shutdowns for safe installation.
• Mechanical properties must match line span and pole strength, especially for high-voltage lines .

Pricing

• Market prices for 48-core OPGW cables range from USD $5.50–$9.56 per meter, with bulk orders (≥10 km) typically around $6.20–$7.80/m.
• Price depends on fiber type, metallic stranding, tensile strength, and environmental protection features .

Standards Compliance

• Designed to meet IEC 60794, IEEE 1138, and other international standards.
• Customizable to meet specific mechanical, environmental, and electrical requirements . In summary, a 48-core OPGW cable is a robust, dual-purpose solution for modern high-voltage transmission lines, offering both reliable grounding and high-capacity optical communication, with construction options tailored to environmental and mechanical demands.