Single Stainless Steel Tube - OPGW Optical Ground Wire

Cable Opgw Fibras Applications
OPGW cable is suited for installation on transmission lines with the double function of a ground wire (designed to replace traditional static or shield wires) and a communication wire. OPGW conducts short circuit current and provide lightning resistance as it “shields” conductors, while providing a telecommunications path for internal as well as third party communications.  OPGW must be capable of withstanding the mechanical and environmental stresses inflicted on overhead cables (such those caused by wind or ice). OPGW must also be capable of handling electrical faults on the transmission line by providing a path to ground yet preventing damage to the delicate optical fibers inside the cable.

Cable Opgw Construction
OPGW cable has two constructions:  
Central loose tube type---The fibers are placed loosely in a sealed and water resistant central, aluminum tube filled with water blocking gel. This tube provides protection to the fiber during installation and operation under severe environmental conditions.  The stainless steel tube may also be aluminum-clad steel depending on the engineering requirements. The stainless optical tube is located at the center of the cable protected by single or multiple layers of aluminum clad steel, aluminum alloy wires, or steel wires. The metallic wires provide mechanical strength to withstand severe installation and operating conditions, while achieving conductivity to control temperature rise during short circuit conditions.
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.
The optical fiber is made of high pure silica and germanium doped silica. UV curable acrylate material is applied over fiber cladding as optical fiber primary protective coating. The detail data of optical fiber performance are shown in the following table.
Optical fiber uses special spun device successfully controlled the value of PMD, and makes sure that it can keep stable in cabling

Opgw Conductor Standards 
IEC 60793-1 Optical fiber Part 1: Generic specifications
IEC 60793-2 Optical fiber Part 2: Product specifications
ITU-T G.652 Characteristics of a single-mode optical fiber cable
ITU-T G.655 Characteristics of a non-zero dispersion-shifted single-mode optical fiber and Cable
EIA/TIA 598  Color code of fiber optic cables
IEC 60794-4-10 Aerial optical cables along electrical power lines – Family specification for OPGW
IEC 60794-1-2 Optical fiber cables-Part 1-2: Generic specification - Basic optical cable test procedures
IEEE1138-2009 IEEE Standard for testing and performance for optical ground wire (OPGW) for use on electric utility power lines
IEC 61232 Aluminum – clad steel wire for electrical purposes
IEC 60104 Aluminum magnesium-silicon alloy wire for overhead line conductors
IEC 61089 Round wire concentric lay overhead electrical stranded conductors
Fiber is Corning SMF-28e+ Optical Fiber

Fibra Opgw Manufacturer
Stranding SST OPGW Cable Typical Design

Code name	Structure(No.×Dia./AS) n*mm/AS				Area mm2			Dia.	Linear mass	Rated strength	DC resistance	Short current capacity
	Center	Iner layer	Fiber unit	Outer layer	AA	AS	Total	mm	Kg/km	KN	Ω/km	KA2S
OPGW-24B1-103[103;62.5]	1×2.5/27AS	5×2.4/27AS	1×2.4/24B1*	10×3.1/27AS	0	103	103	13.5	640	105.7	0.63	62.5
OPGW-24B1-103[103;75.9]	1×2.5/20AS	5×2.4/20AS		10×3.1/40AS	0	103	103	13.5	552	83.8	0.49	75.9
OPGW-24B1-103[103;87.4]	1×2.5/20AS	5×2.4/20AS		10×3.1/AA	75.5	27.5	103	13.5	405	57.3	0.39	87.4
OPGW-24B1-89[89;46.4]	1×2.6/27AS	5×2.5/27AS	1×2.5/24B1	12×2.5/27AS	0	88.8	89	12.6	545	91.1	0.73	46.4
OPGW-24B1-89[89;50.3]	1×2.6/30AS	5×2.5/30AS		12×2.5/30AS	0	88.8	89	12.6	518	74.2	0.66	50.3
OPGW-24B1-89[89;62.9]	1×2.6/20AS	5×2.5/20AS		12×2.5/AA	58.9	29.9	89	12.6	376	55.4	0.47	62.9
OPGW-24B1-98[98;60.9]	1×2.6/30AS	5×2.5/30AS	1×2.5/24B1	11×2.8/30AS	0	97.6	98	13.2	567	81.6	0.6	60.9
OPGW-24B1-98[98;77.1]	1×2.6/20AS	5×2.5/20AS		11×2.8/AA	67.7	29.9	98	13.2	371	58	0.42	77.1
OPGW-24B1-110[110;71.7]	1×2.6/27AS	5×2.5/27AS	1×2.5/24B1	10×3.2/27AS	0	110.3	110	14	672	113.1	0.59	71.7
OPGW-24B1-110[110;77.7]	1×2.6/30AS	5×2.5/30AS		10×3.2/30AS	0	110.3	110	14	639	92.2	0.53	77.7
OPGW-24B1-110[110;86.9]	1×2.6/20AS	5×2.5/20AS		10×3.2/40AS	0	110.3	110	14	590	90	0.46	86.9
OPGW-24B1-110[110;100]	1×2.6/20AS	5×2.5/20AS		10×3.2/AA	80.4	29.9	110	14	434	61.7	0.36	100
OPGW-28B1-112[112;80.6]	1×2.75/30AS	5×2.7/30AS	1×2.7/28B1	11×3.0/30AS	0	112.3	112	14.15	650	93.9	0.52	80.6
OPGW-28B1-112[112;88.7]	1×2.75/20AS	5×2.7/20AS		11×3.0/40AS	0	112.3	112	14.15	609	94.2	0.46	88.7
OPGW-28B1-112[112;102.1]	1×2.75/20AS	5×2.7/20AS		11×3.0/AA	77.8	34.6	112	14.15	458	66.9	0.36	102.1
OPGW-28B1-103[103;68.4]	1×2.8/30AS	5×2.7/30AS	1×2.7/28B1	12×2.7/30AS	0	103.5	103	13.6	601	86.5	0.56	68.4
OPGW-28B1-103[103;85.6]	1×2.8/20AS	5×2.7/20AS		12×2.7/AA	68.7	34.8	103	13.6	435	64.6	0.4	85.6
OPGW-28B1-131[131;110]	1×2.85/30AS	5×2.7/30AS	1×2.7/28B1	10×3.5/30AS	0	131.2	131	15.25	756	109.7	0.45	110
OPGW-28B1-131[131;123.2]	1×2.85/20AS	5×2.7/20AS		10×3.5/40AS	0	131.2	131	15.25	697	106.7	0.39	123.2
OPGW-28B1-131[131;141.8]	1×2.85/20AS	5×2.7/20AS		10×3.5/AA	96.2	35	131	15.25	511	72.9	0.3	141.8

 

Item #	FIBERS	FAULT CURRENT (KA2sec)	TOTAL CONDUCTOR AREA (in2)	TOTAL CONDUCTOR AREA (mm2)	OVERALL DIAMETER (IN)	OVERALL DIAMETER (mm)	WEIGHT (lb/ft)	Weight (kg/km)	RBS (lbs)	RBS (kb)
OPGW-2S 1/24	24	51	0.1273	85.05	0.484	12.3	0.321	0.478	17390	7888
OPGW-2S 2/18	36	46	0.1202	80.34	0.484	12.3	0.313	0.466	16107	7306
OPGW-2S 1/24	24	97	0.1603	107.13	0.544	13.8	0.338	0.503	16984	7704
OPGW-2S 1/24	24	121	0.1722	115.05	0.563	14.3	0.328	0.488	15611	7081
OPGW-2S 2/48	96	147	0.2046	136.72	0.63	16	0.472	0.702	24048	10908
OPGW-2S 2/48	96	154	0.2046	136.72	0.63	16	0.45	0.67	22384	10153
OPGW-2S 2/48	96	186	0.2246	150.11	0.662	16.8	0.499	0.742	24183	10969
OPGW-2S 3/48	144	134	0.1926	128.68	0.63	16	0.449	0.668	21865	9918
OPGW-2S 3/48	144	134	0.1926	128.68	0.63	16	0.449	0.668	21934	9949
OPGW-2S 3/48	144	161	0.2114	141.29	0.662	16.8	0.499	0.743	23598	10704