OPGW Optical Cable Model Description

OPGW cables are classified by structure, fiber count, and mechanical design, with model codes like OPGW-B1, OPGW-B2, and OPGW-D representing different configurations and performance characteristics.

Common OPGW Cable Models and Structures

OPGW cables are designed to combine grounding and optical communication in a single overhead conductor. The models are typically identified using a structured code format: OPGW-XX -YY (ZZ;AA), where the letters and numbers indicate the cable structure, fiber count, and optional features ( ).

Typical Structure Codes

• B1: Standard central loose tube with single or multiple layers of aluminum or aluminum-clad steel wires, suitable for moderate spans and environmental conditions ( ).
• B2: Enhanced mechanical strength with additional layers of aluminum-clad steel, designed for longer spans or higher mechanical stress ( ).
• D: Special asymmetric or customized designs for project-specific requirements, including high fiber counts or unique environmental conditions ( ).

Fiber Count Variations

• OPGW cables can range from 6 to over 48 fibers, depending on the application and communication requirements ( ).
• High-count designs may include ribbon fibers or multiple loose tubes to increase capacity while maintaining mechanical integrity ( ).

Construction Types

1. Central Loose Tube Type: Fibers are placed in a stainless steel tube filled with water-blocking gel, optionally surrounded by aluminum or aluminum-clad steel layers for mechanical protection ( ).
2. Stranded or Layered Type: Optical fibers are embedded within multiple layers of metallic wires, providing enhanced tensile strength and lightning protection ( ).
3. Asymmetric or Customized Designs: Tailored for specific tower configurations, environmental conditions, or high-voltage requirements ( ).

Optional Features

• Anti-theft and mechanical protection enhancements.
• Special coatings or alloy wires for corrosion resistance.
• Extended fiber lengths or additional spare fibers for future expansion ( ).

Example Model Codes

• OPGW-B1-12 (24;A): B1 structure, 12 fibers, optional 24-fiber capacity, type A features.
• OPGW-B2-24 (48;D): B2 structure, 24 fibers, optional 48-fiber capacity, type D features.
• OPGW-D-36 (72;C): Customized asymmetric design, 36 fibers, optional 72-fiber capacity, type C features ( ).

Summary

OPGW models are selected based on mechanical strength, fiber count, environmental conditions, and voltage level. Understanding the code naming convention allows engineers and procurement teams to choose the appropriate cable for high-voltage transmission lines while ensuring reliable optical communication and grounding performance ( ).