Uni-tube optical fibre composite overhead ground wire (OPGW) is an overhead hybrid cable containing optical fiber, which has multiple functions such as overhead ground wire and optical communication.
Uni-tube optical fibre composite overhead ground wire is mainly used for 110KV, 220KV, 500KV, 750KV and communication lines of overhead high-voltage transmission systems.
Characteristics
● Good tensile strength
● Small diameter, light weight, small additional load on the tower
● Easy to make appropriate fiber excess length optical unit
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 - 48
Protection Tube
Stainless steel tube
1.5 - 6mm
Stranded Line
AS wire/AA wire/Al Rod
1.5 - 6mm
Max. Diameter
18mm
Max. Cross Section
200mm2
Characteristic
According to the standards as DL/T 832, IEC60794-4-10, IEEE1138
Max. Tensile Strength (RTS ) (kN)
280
Max. Crush Strength(N/100mm)
2200
Max. Short Current Capacity (40℃-200℃)(kA2s)
100
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
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-24B1.3-40-[51;9]
6/3.0/20AS, Optical Unit 1/3.0
24
≈40
9.0
≤304
≥51
≤2.10
≥9
2
OPGW-24B1.3-50-[58;11.5]
6/3.2/20AS, Optical Unit 1/3.2
24
≈50
9.6
≤345
≥58
≤1.82
≥11.5
3
OPGW-48B1.3-70-[77;24]
6/3.8/20AS, Optical Unit 1/3.8
48
≈70
11.4
≤475
≥77
≤1.30
≥24
4
OPGW-48B1.3-70-[42;38]
6/3.8/40AS, Optical Unit 1/3.8
48
≈70
11.4
≤340
≥42
≤0.70
≥38
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 than 100m
Duration time: 1min
40%RTS no additional fibre strain(0.01%), no additional attenuation (0.03dB).
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