Optical Fibre Composite Overhead Ground Wire (Uni-tube)

Characteristics

The protection and support of the optical fibers are provided by stainless steel tubes that are filled with hydrophobic gel. The tensile performance is good. The tubes have a small diameter and light weight, which results in low additional load on the tower. The optical unit has an appropriate excess length of fiber, which makes it easy to assemble.

	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

Other optical fibre type and count, stranded wire are available on request.

Mechanical and Environmental Testing 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.

Packing & Shipping