IEC 6 Optical fiber cables-Part 1-2: Generic specification - Basic optical cable test procedures.IEC 6 Aerial optical cables along electrical power lines – Family specification for OPGW.
YOUTUBE PLS CADD CODE
EIA/TIA 598 Color code of fiber optic cables. ITU-T G.655 Characteristics of a non-zero dispersion-shifted single-mode optical fiber and Cable. ITU-T G.652 Characteristics of a single-mode optical fiber cable. IEC 60793-2 Optical fiber Part 2: Product specifications. IEC 60793-1 Optical fiber Part 1: Generic specifications. Optical fiber uses special spun device successfully controlled the value of PMD, and makes sure that it can keep stable in cabling The detail data of optical fiber performance are shown in the following table. UV curable acrylate material is applied over fiber cladding as optical fiber primary protective coating. The optical fiber is made of high pure silica and germanium doped silica. The multi loose tube type can meet the requirement of huge cross and large current capacity. The multi loose tube type is designed mostly for very high fiber count requirement over 48 with the maximum fiber count reaching 144. Two or three stainless steel optical tubes are helically stranded in the inner layer of a multiple-layer cable. Multi loose tube type- The fibers is placed loosely in a sealed and water resistant stainless steel tube filled with water blocking gel. The smaller diameter also results in excellent sag tension performance. This compact design features high mechanical strength and fault current rating within a smaller diameter. The metallic wires provide mechanical strength to withstand severe installation and operating conditions, while achieving conductivity to control temperature rise during short circuit conditions.Įach optical fiber is clearly distinguishable utilizing a fiber identification system consisting of coloring and the number of ring marks on it. 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 stainless steel tube may also be aluminum-clad steel depending on the engineering requirements. This tube provides protection to the fiber during installation and operation under severe environmental conditions. Its small profile offers an exceptional solution to the diameter and weight concerns on many of today’s overloaded transmission towers where an existing shield wire needs to be replaced with an OPGW cable.Ĭentral loose tube type-The fibers are placed loosely in a sealed and water resistant central, aluminum tube filled with water blocking gel. OPGW (Optical Ground Wire) with a stainless steel central tube is preferred for its compact size and ability to house up to 72 fibers in a diameter starting at only 12mm. 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. OPGW must be capable of withstanding the mechanical and environmental stresses inflicted on overhead cables (such those caused by wind or ice). 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 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.
0 kommentar(er)
