Sichuan Huiyuan Optical Communications Co., Ltd,
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60 Core High Voltage Power Transmission Line OPGW Optical Ground Wire
Description
OPGW is primarily used by the electric utility industry, placed in the secure topmost position of the transmission line where it “shields” the all-important conductors from lightning while providing a telecommunications path for internal as well as third party communications. Optical Ground Wire is a dual functioning cable, meaning it serves two purposes. It is designed to replace traditional static / shield / earth wires on overhead transmission lines with the added benefit of containing optical fibers which can be used for telecommunications purposes. OPGW must be capable of withstanding the mechanical stresses applied to overhead cables by environmental factors such as wind and ice. OPGW must also be capable of handling electrical faults on the transmission line by providing a path to ground without damaging the sensitive optical fibers inside the cable.
Technical specification
| Specification | Fiber Count | Diameter | Weight | RTS | Short Circuit |
| (mm) | (kg/km) | (KN) | (KA2s) | ||
| OPGW-89[55.4;62.9] | 24 | 12.6 | 381 | 55.4 | 62.9 |
| OPGW-110[90.0;86.9] | 24 | 14 | 600 | 90 | 86.9 |
| OPGW-104[64.6;85.6] | 28 | 13.6 | 441 | 64.6 | 85.6 |
| OPGW-127[79.0;129.5] | 36 | 15 | 537 | 79 | 129.5 |
| OPGW-137[85.0;148.5] | 36 | 15.6 | 575 | 85 | 148.5 |
| OPGW-145[98.6;162.3] | 48 | 16 | 719 | 98.6 | 162.3 |
Cable structure
Features
1. Small diameter, low weight reduces retrofit impact
2. Hermetically sealed stainless steel tubes provide mechanical and thermal protection for fibers
3. Thick-walled aluminum pipe provides crush resistance and boosts fault current rating
4. Replacement with ACS wires improves lightning resistance
5. Lower wind and ice loads put less load on structures
6. Fiber grouped in bundles of 12 for ease of splicing
Standard drum length
2000m/drum & 4000m/drum
Fiber specification
| Characteristics | Specified Values | Units | |||
| Geometric characteristic | |||||
| Cladding diameter | 125.0±1.0 | µm | |||
| Cladding non-circularity | ≤1.0 | % | |||
| Coating diameter | 245.0±10.0 | µm | |||
| Coating-cladding concentricity error | ≤12.0 | µm | |||
| Coating non-circularity | ≤6.0 | % | |||
| Core-cladding concentricity error | ≤0.8 | µm | |||
| Mechanical characteristic | |||||
| Curling | ≥4 | m | |||
| Proof stress | ≥0.69 | GPa | |||
| Coating strip force | Average value | 1.0-5.0 | N | ||
| Peak value | 1.3-8.9 | N | |||
| Macro bending loss | Ф60mm, 100 circles, at 1550nm | ≤0.05 | dB | ||
| Ф32mm, 1 circles, at 1550nm | ≤0.05 | dB | |||
Test
| Item | Test Method | Requirements |
| IEC 60794-1-2-E1 | ||
| Load: according to cable structure | 40%RTS no additional fibre strain(0.01%), no additional attenuation (0.03dB). | |
| Sample length: no less than 10m, linked length no less than100m | 60%RTS fibre strain≤0.25%,additional attenuation≤0.05dB | |
| Tension | Duration time: 1min | (No additional attenuation after test). |
| IEC 60794-1-2-E3 | ||
| Load: according to above table, three points | Additional attenuation at 1550nm ≤0.05dB/fibre; No damage to the elements | |
| Crush | Duration time: 10min | |
| IEC 60794-1-2-F5B | No water leakage. | |
| Time : 1 hour Sample length: 0.5m | ||
| Water Penetration | Water height: 1m | |
| IEC 60794-1-2-F1 | The change in attenuation coefficient shall be less than 0.1dB/km at 1550nm. | |
| Sample length: No less than 500m | ||
| Temperature range: -40℃ to +65℃ | ||
| Temperature Cycling | Cycles: 2 | |
| Temperature cycling test dwell time: 12h |
Factory & office
Production line
Team