Stranded-tube Optical Fibre Composite Overhead Ground Wire

Orientalfiber Stranded-tube Optical Fibre Composite Overhead Ground Wire (OPGW) is a multifunctional overhead hybrid cable from Orientalfiber, a reliable China manufacturer and supplier. This OPGW integrates optical fibers within a stranded-tube structure, serving both as an overhead ground wire and a high-capacity optical communication medium. It is engineered to ensure stable data transmission, strong mechanical performance, and long-term durability in overhead deployment environments. The product is suitable for power grids, railways, and other infrastructure projects where combined lightning protection and communication reliability are essential.

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Product Description

In modern power grid construction, the demand for simultaneous high-voltage transmission and high-speed data backhaul has never been higher. Orientalfiber offers a specialized Stranded-tube Optical Fibre Composite Overhead Ground Wire (OPGW), a sophisticated hybrid cable designed to replace traditional shield wires. By integrating optical fibers within a stranded metallic structure, our OPGW provides a dual-function solution: providing reliable lightning protection for high-voltage lines while serving as the backbone for telecommunications and grid automation.

Product Definition: The Dual-Role Infrastructure

The Stranded-tube Optical Fibre Composite Overhead Ground Wire is an overhead cable that performs the functions of a conventional ground wire (protecting the transmission line from lightning strikes and short-circuit currents) while housing optical fibers for data transmission. This stranded design allows for a higher fiber count and greater durability, making it the preferred choice for backbone network construction in the power utility sector.

Strategic Value for Procurement & Engineering

Choosing Orientalfiber as your supply partner ensures that your infrastructure meets the rigorous demands of the 2026 energy landscape. Key procurement advantages include:

High Fiber Density: Our stranded-tube design accommodates significantly more fibers than central-tube versions, supporting future-proof network expansion for 5G and smart grid IoT.
Optimized Short-Circuit Capacity: Engineered to handle high fault currents without compromising the integrity of the optical fibers inside.
Reduced Life-Cycle Costs: With a service life matching the transmission line itself, the Stranded-tube Optical Fibre Composite Overhead Ground Wire reduces the need for frequent maintenance or upgrades.
Global Logistics & Scale: With an annual output of $20 million, we provide the manufacturing scale necessary to support 500KV and 750KV national-level infrastructure projects.

Technical Characteristics & Performance Benefits

The Orientalfiber OPGW is manufactured with precision to ensure it thrives in the most volatile outdoor environments:

Mechanical Stability: Precise process control ensures that the fibers remain stress-free even under heavy wind, ice loading, or high-tensile installation forces.
Thermal Protection: The stranded tubes are filled with specialized compounds that protect fibers from the extreme heat generated during short-circuit events on the power line.
Corrosion Resistance: Utilizing Aluminum-Clad Steel (ACS) and Aluminum Alloy wires, the cable is highly resistant to environmental degradation in coastal or industrial areas.
Large Diameter Options: Specifically designed to match the mechanical requirements of new high-voltage transmission systems (110KV to 750KV).

Detailed Specifications and Design Parameters

The technical configuration of the Stranded-tube Optical Fibre Composite Overhead Ground Wire can be customized based on the specific span and electrical requirements of the project:

Feature	Standard Specification	Operational Advantage
Voltage Grade	110KV, 220KV, 500KV, 750KV	Versatile for regional and national grids.
Fiber Count	Up to 144 Fibers (or more upon request)	Supports massive data throughput.
Material Composition	ACS (Aluminum Clad Steel) + AA (Aluminum Alloy)	High strength-to-weight ratio.
Standards Compliance	IEEE 1138, IEC 60794-4	Ensures global interoperability and safety.

Core Applications: Empowering the Smart Grid

The Stranded-tube Optical Fibre Composite Overhead Ground Wire from Orientalfiber is a critical component in several key sectors:

High-Voltage Transmission: Primary ground wire for newly built 220KV and 500KV lines, offering lightning shielding and grounding.
Power Utility Communication: Real-time monitoring of transformer stations, remote metering, and protective relaying.
Broadband Backhaul: Leasing excess fiber capacity to telecommunications operators for rural or long-distance data transport.
Smart Grid Management: Facilitating the low-latency communication required for automated fault detection and grid self-healing.

Characteristics

● Precise process control to ensure good mechanical and temperature performance

● Larger diameter and more optical fibers

● Stable structure and high reliability

● High tensile strength and large short-time current capacity

Optical Fibre Characteristics

	Attenuation				Bandwidth		Polarization Mode Dispersion
	@850nm	@1300nm	@1310nm	@1550nm	@850nm	@1300nm	Individual Fibre	Design Link Value (M=20, Q=0.01%)
G652D	—	—	≤0.35dB/km	≤0.21dB/km	—	—	≤0.20ps/ km	≤0.1ps/ km
G655	—	—	—	≤0.22dB/km	—	—	≤0.20ps/ km	≤0.1ps/ km
50/125μm	≤3.0dB/km	≤1.0dB/km	—	—	≥600MHz.km	≥1200MHz.km	—	—
62.5/125μm	≤3.5dB/km	≤1.0dB/km	—	—	≥200MHz.km	≥600MHz.km	—	—

Constructions and Performance

	Classiﬁcation	Material	Value
Construction	Optical Fibre	G652D/G655 etc.	2 - 144
	Protection Tube	Stainless steel tube	1.5 - 6mm
	Stranded Line	AS wire/AA wire/Al Rod	1.5 - 6mm
	Max. Diameter		30mm
	Max. Cross Section		500mm²
Characteristic	According to the standards as DL/T 832, IEC60794-4-10, IEEE1138
	Max. Tensile Strength (RTS ) (kN)		700
	Max. Crush Strength（N/100mm）		3000
	Max. Short Current Capacity (40℃to 200℃)(kA2s)		2000
	Min. Bending Radius (Dynamic)		20D
	Min. Bending Radius (Static)		15D
Environment Performance	Installation (℃)		-10 to +50
	Transportation and Operation (℃)		-40 to +65

Note: D is cable diameter.

Specific Type and Technical Data

No.	Technical Data
No.	Product Type	Structure Type	Max. Fibre Count	Section of AS Wire (mm2)	Diameter （mm）	Cable Weight (kg/km)	Rate Tensile Strength （kN）	20℃DC Resistance （Ω/km）	Short Time Current Capacity （40-200℃kA2.s）
1	OPGW-48B1.3-90- [112;45]	1/2.6/20AS＋4/2.5/20AS＋ 11/2.8/20AS, Optical Unit 2/2.5	48	≈90	13.2	≤641	≥112	≤0.98	≥45
2	OPGW-48B1.3-90- [57;67]	1/2.6/40AS＋4/2.5/40AS＋ 11/2.8/40AS, Optical Unit 2/2.5	48	≈90	13.2	≤457	≥57	≤0.52	≥67
3	OPGW-24B1.3-100-[118;50]	1/2.6/20AS＋5/2.5/20AS＋ 11/2.8/20AS, Optical Unit 1/2.5	24	≈100	13.2	≤674	≥118	≤0.93	≥50
4	OPGW-24B1.3-100-[60;74]	1/2.6/40AS＋5/2.5/40AS＋ 11/2.8/40AS, Optical Unit 1/2.5	24	≈100	13.2	≤479	≥60	≤0.49	≥74
5	OPGW-24B1.3-110-[133;63]	1/2.6/20AS＋5/2.5/20AS＋ 10/3.2/20AS, Optical Unit 1/2.5	24	≈110	14	≤760	≥133	≤0.83	≥63
6	OPGW-24B1.3-110-[140;68]	1/2.8/20AS＋5/2.7/20AS＋ 11/3.05/20AS, Optical Unit 1/2.6	24	≈110	14.3	≤791	≥140	≤0.80	≥68
7	OPGW-24B1.3-110-[67;95]	1/2.9/20AS＋5/2.8/20AS＋ 12/2.8/AA , Optical Unit 1/2.7	24	≈37 ≈74(AA)	14.1	≤473	≥67	≤0.40	≥95
8	OPGW-36B1.3-120-[145;73]	1/3.0/20AS＋5/2.9/20AS＋ 12/2.9/20AS, Optical Unit 1/2.8	36	≈120	14.6	≤820	≥145	≤0.77	≥73
9	OPGW-36B1.3-120-[95;98]	1/3.0/30AS＋5/2.9/30AS＋ 12/2.9/30AS, Optical Unit 1/2.8	36	≈120	14.6	≤700	≥95	≤0.55	≥98
10	OPGW-36B1.3-120-[74;110]	1/3.0/40AS＋5/2.9/40AS＋ 12/2.9/40AS, Optical Unit 1/2.8	36	≈120	14.6	≤582	≥74	≤0.42	≥110
11	OPGW-72B1.3-120-[147;76]	1/3.2/20AS＋4/3.0/20AS＋ 12/3.0/20AS, Optical Unit 2/2.9	72	≈120	15.2	≤832	≥147	≤0.76	≥76
12	OPGW-72B1.3-120-2[96;101]	1/3.2/30AS＋4/3.0/30AS＋ 12/3.0/30AS, Optical Unit 2/2.9	72	≈120	15.2	≤711	≥96	≤0.53	≥101
13	OPGW-72B1.3-120-[74;114]	1/3.2/40AS＋4/3.0/40AS＋ 12/3.0/40AS, Optical Unit 2/2.9	72	≈120	15.2	≤591	≥74	≤0.40	≥114
14	OPGW-36B1.3-130-[155;85]	1/3.2/20AS＋5/3.0/20AS＋ 12/3.0/20AS, Optical Unit 1/2.9	36	≈130	15.2	≤879	≥155	≤0.72	≥85
15	OPGW-36B1.3-130-[102;114]	1/3.2/30AS＋5/3.0/30AS＋ 12/3.0/30AS, Optical Unit 1/2.9	36	≈130	15.2	≤751	≥102	≤0.50	≥114
16	OPGW-36B1.3-130-[79;137]	1/3.2/40AS＋5/3.0/40AS＋ 12/3.0/40AS, Optical Unit 1/2.9	36	≈130	15.2	≤624	≥79	≤0.40	≥137
17	OPGW-36B1.3-140-[175;100]	1/3.3/20AS＋5/3.2/20AS＋ 12/3.2/20AS, Optical Unit 1/3.1	36	≈140	16.1	≤995	≥175	≤0.65	≥100
18	OPGW-36B1.3-140-[115;140]	1/3.3/30AS＋5/3.2/30AS＋ 12/3.2/30AS, Optical Unit 1/3.1	36	≈140	16.1	≤850	≥115	≤0.45	≥140
19	OPGW-36B1.3-145-[86;170]	1/3.3/20AS＋5/3.2/20AS＋ 12/3.2/AA, Optical Unit 1/3.1	36	≈49 ≈96(AA)	16.1	≤611	≥86	≤0.31	≥170
20	OPGW-48B1.3-150-[182;123]	1/3.4/20AS＋5/3.3/20AS＋ 12/3.3/20AS, Optical Unit 1/3.2	48	≈150	16.6	≤1055	≥182	≤0.60	≥123
21	OPGW-48B1.3-150-[122;165]	1/3.4/30AS＋5/3.3/30AS＋ 12/3.3/30AS, Optical Unit 1/3.2	48	≈150	16.6	≤901	≥122	≤0.42	≥165
22	OPGW-48B1.3-150-[95;195]	1/3.4/40AS＋5/3.3/40AS＋ 12/3.3/40AS, Optical Unit 1/3.2	48	≈150	16.6	≤747	≥95	≤0.33	≥195
23	OPGW-72B1.3-150-[172;110]	1/3.4/20AS＋4/3.3/20AS＋ 12/3.3/20AS, Optical Unit 2/3.2	72	≈150	16.6	≤998	≥172	≤0.64	≥110
24	OPGW-72B1.3-150-[116;147]	1/3.4/30AS＋4/3.3/30AS＋ 12/3.3/30AS, Optical Unit 2/3.2	72	≈150	16.6	≤853	≥116	≤0.45	≥147
25	OPGW-48B1.3-170-[198;150]	1/3.6/20AS＋5/3.5/20AS＋ 12/3.5/20AS, Optical Unit 1/3.4	48	≈170	17.6	≤1190	≥198	≤0.54	≥150
26	OPGW-72B1.3-170-[199;156]	1/3.8/20AS＋4/3.6/20AS＋ 12/3.6/20AS, Optical Unit 2/3.5	72	≈170	18.2	≤1187	≥199	≤0.54	≥156
27	OPGW-48B1.3-180-[252;125]	1/3.8/14AS＋5/3.6/14AS＋ 12/3.6/14AS, Optical Unit 1/3.5	48	≈180	18.2	≤1372	≥252	≤0.72	≥125
28	OPGW-48B1.3-180-[211;175]	1/3.8/20AS＋5/3.6/20AS＋ 12/3.6/20AS, Optical Unit 1/3.5	48	≈180	18.2	≤1255	≥211	≤0.50	≥175
29	OPGW-48B1.3-180-[147;234]	1/3.8/30AS＋5/3.6/30AS＋ 12/3.6/30AS, Optical Unit 1/3.5	48	≈180	18.2	≤1071	≥147	≤0.35	≥234
30	OPGW-48B1.3-180-[113,262]	1/3.8/40AS＋5/3.6/40AS＋ 12/3.6/40AS, Optical Unit 1/3.5	48	≈180	18.2	≤888	≥113	≤0.28	≥262
31	OPGW-48B1.3-235-[268;243.4]	1/2.7/20AS＋4/2.5/20AS＋ 12/2.5/20AS+13/3.8/20AS, Optical Unit 1/3.5	48	≈235	20.3	≤1594	≥268	≤0.38	≥243.4

Mechanical and Environmental Test Characteristics

Item	Test Method	Requirements
Tension	IEC 60794-1-2-E1 Load: according to cable structure Sample length: no less than 10m, linked length no less than100m Duration time: 1min	40%RTS no additional ﬁbre strain（0.01%）, no additional attenuation (0.03dB). 60%RTS ﬁbre strain≤0.25%，additional attenuation≤0.05dB (No additional attenuation after test).
Crush	IEC 60794-1-2-E3 Load: according to above table, three points Duration time: 10min	Additional attenuation at 1550nm ≤0.05dB/ﬁbre; No damage to the elements
Water Penetration	IEC 60794-1-2-F5B Time : 1 hour Sample length: 0.5m Water height: 1m	No water leakage.
Temperature Cycling	IEC 60794-1-2-F1 Sample length: No less than 500m Temperature range: -40℃to +65℃ Cycles: 2 Temperature cycling test dwell time: 12h	The change in attenuation coeﬃcient shall be less than 0.1dB/km at 1550nm.

Frequently Asked Questions (FAQ)

Why is stranded-tube OPGW better for high-voltage lines?

The stranded-tube design allows for a larger cable diameter and higher fiber counts. It also distributes mechanical stress more evenly across the cable, which is vital for long-span crossings used in 500KV and 750KV lines.

How does Orientalfiber ensure the quality of the OPGW?

We operate under ISO9001 quality management and ISO45001 safety systems. Every batch of Stranded-tube Optical Fibre Composite Overhead Ground Wire undergoes rigorous testing for tensile strength, crush resistance, and short-circuit performance before shipment.

Can this cable be used on existing lines?

While often used for "newly built" lines, OPGW is frequently used to replace existing traditional earth wires during grid modernization projects to add communication capabilities to old routes.

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