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Home>Products>Special Optical Cable>Optical Fiber Composite Overhead Ground Wire (OPGW)
Optical Fiber Composite Overhead Ground Wire (OPGW) is an overhead ground wire containing optical fibers, integrating the functions of both a ground wire and optical communication. It is primarily used in communication lines for 110kV, 220kV, 500kV, 750kV, and newly constructed overhead high-voltage transmission systems. It can also replace existing ground wires in old overhead high-voltage transmission systems to add optical communication channels, conduct short-circuit currents, and provide lightning strike protection. Customized structures are available based on user requirements.
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- Product Features
- Optical Cable Structure Diagram
- Product Standards
1. Stainless steel tube protects optical fibers with high tensile strength.
2. Small cable diameter and light weight reduce additional load on towers.
3. The optical unit provides suitable primary fiber excess length.
4. Slightly inferior resistance to stretching, torsion, and lateral compression.
Structural and Performance Parameters Fiber, Protective tube, Stainless steel tube
Type | Material | Value, Structure | |
Structure | Fiber | G652D/G655,etc. | 2~48core |
Protective tude | Stainless steel tude | 1.5~6mm | |
Stranded wire | Al-clad steel / Al alloy / Al rod | 1.5~6mm | |
Max OD | 18mm | ||
Max cross-section | 200mm2 | ||
Mechanical properties | Complies with DL/T 832-2016 | ||
RTS (kN) | 280 | ||
Max crushing force (N/100mm) | 2200 | ||
Short-circuit capacity (40℃~200℃)(kA2·s) | 100 | ||
Min bending radius (dynamic) | 20D | ||
Min bending radius (static) | 15D | ||
Environmental performance | Installation temp range (°C) | -10~+50 | |
Operating/storage temp range (°C) | -40~+65 | ||
Note: D is OPGW cable diameter.
Structural Technical Parameters
Number | Model | Structure | | Max fibers (core) | Al-clad steel section (mm2) | OD（mm） | Unit weight (kg/km) | RTS (kN) | DC resistance @20℃ (Ω/km) | Short-circuit capacity (40-200℃ kA2·s) |
1 | OPGW-24B1.3-40-[51;9] | 6/3.0/20AS,Optical unit1/3.0 | 24 | ≈40 | 9.0 | ≤304 | ≥51 | ≤2.10 | ≥9 |
2 | OPGW-24B1.3-50-[58;11.5] | 6/3.2/20AS,Optical unit1/3.2 | 24 | ≈50 | 9.6 | ≤345 | ≥58 | ≤1.82 | ≥11.5 |
3 | OPGW-48B1.3-70-[77;24] | 6/3.8/20AS,Optical unit1/3.8 | 48 | ≈70 | 11.4 | ≤475 | ≥77 | ≤1.30 | ≥24 |
4 | OPGW-48B1.3-70-[42;38] | 6/3.8/40AS,Optical unit1/3.8 | 48 | ≈70 | 11.4 | ≤340 | ≥42 | ≤0.70 | ≥38 |
Optical Characteristics
光纤类型 Fiber Type | G.652 | G.655 | 50/125 μm | 62.5/125 μm | |
衰减 Attenuation（+20℃） | @ 850 nm | ≤ 3.3 dB/km | ≤ 3.5 dB/km | ||
@1300 nm | ≤ 1.2 dB/km | ≤ 1.2 dB/km | |||
@1310 nm | ≤ 0.36 dB/km | ≤ 0.40 dB/km | |||
@1550 nm | ≤ 0.22 dB/km | ≤ 0.23 dB/km | |||
带宽 Bandwidth | @ 850 nm | ≥ 500 MHz·km | ≥ 200 MHz·km | ||
@1300 nm | ≥ 500 MHz·km | ≥ 500 MHz·km | |||
数值孔径 Numerical Aperture | 0.200 ± 0.015 NA | 0.275 ± 0.015 NA | |||
光缆截止波长Cable Cut-off Wavelength lcc | ≤ 1260 nm | ≤ 1450 nm | |||
Mechanical and Environmental Performance Tests
Item | Test Method | Criteria |
Tension | GB/T 7424.2-E1 Load: Per cable structure | 40% RTS: No significant fiber strain (0.01%), no significant added attenuation (0.03dB).60% RTS: Fiber strain ≤0.25%, added attenuation ≤0.05dB (no significant residual attenuation (0.03dB) after tension release). |
Crushing | GB/T 7424.2-E3 Load: Per above table, test 3 pointsDuration: 10min |
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Water Blocking | GB/T 7424.2-F5 Time: 1h Length: 0.5m Water height: 1m | Water-blocking. |
Temp Cycle | GB/T 7424.2-F1 Length: ≥500m Temp: -40℃ to +70℃ Cycles: 2 Dwell: ≥12h | Post-test: SMF added attenuation ≤0.1dB at 1550nm. |
