OPGW Fiber Optic Cable | High Voltage Transmission | Factory Supply

OPGW Center Tube Optical Fiber Composite Overhead Ground Wire

The OPGW (Optical Fiber Composite Overhead Ground Wire) is a multi-functional aerial ground wire designed for high-voltage transmission systems. It serves the dual purpose of a traditional ground wire—providing lightning protection and conducting short-circuit currents—while simultaneously acting as a high-speed optical communication medium. It is primarily utilized in 110KV, 220KV, 500KV, and 750KV power systems.

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Core Product Characteristics

• Superior Protection: High-tensile stainless steel tubes protect the optical fibers from external mechanical stress.
• Enhanced Reliability: Provides effective grounding and lightning protection for high-voltage transmission lines.
• Optimized Design: Features a small diameter and lightweight construction to minimize additional mechanical load on utility towers.
• Fiber Integrity: Maintains a suitable primary excess length of optical fiber within the optical unit to prevent signal loss under tension.

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Structure and Performance Parameters

Category	Parameter	Material / Specification
Structure	Optical Fiber	G652D / G655 (2-48 cores)
	Protector Tube	Stainless Steel tube (1.5-6mm)
	Single Line	Aluminum clad steel / Aluminum Alloy / Rod
	Max Section Area	$200mm^2$
Mechanical	Rated Tensile Strength (RTS)	Up to 280 KN
	Max Crush Resistance	2200 N/100mm
	Min Bending Radius	20D (Dynamic) / 15D (Static)
Environmental	Operating/Storage Temp	$-40\text{°C}$ to $+65\text{°C}$
	Installation Temp	$-10\text{°C}$ to $+50\text{°C}$

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Technical Parameters by Type

Product Type	Diameter (mm)	Reference Weight (kg/km)	Rated Breaking Force (KN)	20°C DC Resistance (Ω/km)
OPGW-24C-40-[51;9]	9.0	$\le 304$	$\ge 51$	$\le 2.1$
OPGW-24C-50-[58;11.5]	9.6	$\le 345$	$\ge 58$	$\le 1.82$
OPGW-48C-70-[77;24]	11.4	$\le 475$	$\ge 77$	$\le 1.30$
OPGW-48C-70-[42;38]	11.4	$\le 340$	$\ge 42$	$\le 0.70$

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Primary Applications

• New Infrastructure: Telecommunication lines for new overhead high-voltage transmission systems.
• System Upgrades: Replacing existing ground lines on old high-voltage systems to add optical communication capabilities.
• Custom Projects: Structures can be customized to meet specific user needs for various transmission environments.

Note: “D” used in bending radius specifications refers to the outer diameter of the OPGW.