OPGW Fiber Optical overhead power ground cable

You only need provide us the paramters of fiber counts, cross section, RTS and short current capacity, then we can design them.

Application:OPGW is a dual functioning cable performing the duties of a ground wire and also providing a patch for the transmission of voice, video or data signals . The fibers are protected from environmental conditions (lightning, short circuit, loading) to ensure reliability and longevity. The cable is designed to be installed on transmission and distribution lines to carry voice, data and video communications, especially in lighting waveform monitoring system, an observation system for overhead test line, maintenance data information system, power line protection system, power line operation system, and unmanned substation monitoring.

Description:

OPGW cable has two constructions:  

Central loose tube type---The fibers is placed loosely in a sealed and water resistant stainless steel tube filled with water blocking gel. This tube provides protection to the fiber during installation and operation under severe environmental conditions. Aluminium layer over the tube is optional. The stainless optical tube is located at the center of the cable protected by single or multiple layers of aluminium clad steel and aluminium annoy wires. The aluminium clad steel wires are shaped trapezoidally around the optical unit to provide compact construction. The metallic wires provide mechanical strength to withstand severe installation and operating conditions, while achieving conductivity to control temperature rise during short circuit conditions.

This type can accommodate up to 48 fibers in a cable. Despite such a high fiber count in a single tube, each optical fiber is clearly distinguishable utilizing a fiber identification system consisting of coloring and the number of ring marks on it. This compact design features high mechanical strength and fault current rating within a smaller diameter. The smaller diameter also results in excellent sag tension performance.

Multi loose tube type--- The fibers is placed loosely in a sealed and water resistant stainless steel tube filled with water blocking gel. Two or three stainless steel optical tubes are helically stranded in the inner layer of a multiple-layer cable. The multi loose tube type is designed mostly for very high fiber count requirement over 48 with the maximum fiber count reaching 144. The multi loose tube type can meet the requirement of huge cross and large current capacity.

OPGW Fiber Optical overhead power ground cable
Physical Properties:
Cable section(mm2)	Nominal Outer Diameter(mm/in)	Nominal Weight(kg/km)/(lb/kft)	Max working tension(kN)	Modulus of elasticity(kN/mm2)	Heat expansion coefficient(10-6/)	DC Resistance(Ω/km)	Short-circuit current capacity (kA2s)
35	8.1/0.318	250/167.79	45.2	162	13	2.433	8.9
50	9.6/0.378	343/230.20	63	162	13	1.743	16.5
70	11.4/0.448	487/326.85	89.3	162	13	1.237	3.04
90	12.5/0.492	368/246.98	58.2	94.1	17.3	0.473	72.7
105	13.5/0.531	428/287.25	67.9	94.1	17.3	0.403	98.8
130	15.0/0.590	527/353.69	83.8	94.1	17.3	0.329	149.9
*The effective sectional area of the single-layer design ranges from 50mm2 to 83mm2, suitable for rated voltages of 66kV, 115kV, 150kV, 250kV and 275kV.*The effective sectional area of the double-layer design ranges from 90mm2 to 200mm2, suitable for rated voltages of 150kV, 250kV, 275kV, 380kV and 500kV.*The effective sectional area of the three-layer design ranges from 200mm2 to 400mm2, suitable for rated voltages of 380kV, 420kV and 500kV in European markets.

OPGW Fiber Optical overhead power ground cable

Cable model			OPGW-60	OPGW-70	OPGW-90	OPGW-110	OPGW-130
Number/diameter(mm) of stainless steel tube			1/3.5	2/2.4	2/2.6	2/2.8	1/3.0
Number/diameter(mm) of AL wire(mm)			0/3.5	12/2.4	12/2.6	12/2.8	12/3.0
Number/diameter of ACS wire(mm)			6/3.5	5/2.4	5/2.6	5/2.8	6/3.0
Diameter of Cable (mm)			10.5	12.0	13.0	14.0	15.0
RTS(KN)			75	45	53	64	80
Cable weight(kg/km)			415	320	374	432	527
DC resistance(200°CΩ/km)			1.36	0.524	0.448	0.386	0.327
Modulus of elasticity(Gpa)			162	96.1	95.9	95.6	97.8
Coefficient of Linear thermal expansion(1/°C*10-6)			12.6	17.8	17.8	17.8	17.2
Short circuit capacity (kA2s)			24.0	57.3	78.9	105.8	150.4
Max operation temperature(°C)			200	200	200	200	200
Max fiber count			48	32	48	52	30