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OPGW Fiber Optic Cable, which is primarily used in the power sector, is installed in the safest location on the transmission line. It "shields" all crucial conductors from lightning strikes and offers a telecommunications path for internal and external communications.
The fiber optic ground cable has two functions, making it a dual-function cable. It has the advantage of containing optical fibers that may be used for telecommunications and is intended to replace conventional static/shielding/ground wires on overhead transmission lines.
OPGW cable must be able to endure the mechanical strain that weather conditions like wind and ice place on overhead cables. By providing a way to ground without damaging the transmission line, the OPGW must also be able to handle electrical problems on the transmission line.
OPGW Fiber Optic Cable has two constructions:
1. Central loose tube type
1. A central aluminum tube that is sealed and water resistant and filled with water blocking gel contains the fibers loosely. Under harsh environmental circumstances, this tube protects the fiber during installation and operation. Depending on the engineering needs, the stainless steel tube could alternatively be steel with an aluminum coating. At the heart of the cable is a stainless optical tube that is shielded by one or more layers of aluminum-clad steel, aluminum alloy wires, or steel wires. The metallic wires have conductivity to reduce temperature rise in short circuit settings and mechanical strength to survive difficult installation and operating conditions.
2.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.
2.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
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
Hardware for Installation
Reel lengths must be defined at time of purchase to assist client with reducing waste, and to reduce splicing required during installation.
Please contact AWG for full detailed technical specifications, including PLS CADD data or Stress Creep data.
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