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- home > Supply > Manufacturers supply of OPGW optical composite cable ground wire cable outdoor communication cable
Information Name: | Manufacturers supply of OPGW optical composite cable ground wire cable outdoor communication cable |
Published: | 2015-04-14 |
Validity: | 365 |
Specifications: | |
Quantity: | 20000.00 |
Price Description: | |
Detailed Product Description: | OPGW cable, also known as OPGW fiber is placed in the ground in high voltage overhead transmission lines, transmission lines to constitute a fiber-optic network, which form the structure of the dual function of both the ground and the communication, commonly referred to as OPGW cable. Since the optical fiber with anti-electromagnetic interference, light weight and other characteristics, it can be installed on top of the transmission line towers without having to consider the best frame hanging position and electromagnetic corrosion problems. Thus, OPGW with high reliability, superior mechanical properties, lower cost and other notable features. This technique when newly installed or replaced existing ground particularly suitable and economical. Fiber is the use of the core and cladding refractive index difference between the size of the two materials to make light in optical fiber transmission, which became a major revolution in communications history. Fiber optic cable light weight, small size, the power system has been adopted, the transfer between the substation and dispatch telephone center scheduling, remote signal, relay, television images and other information. In order to improve the stability and reliability of fiber optic cable, fiber optic cable and foreign development phase conductor transmission lines, power cables and composite overhead ground as one of the structures. OPGW cable due to the metal wire wrapped, so that the cable is more reliable, stable, strong, due to the composite overhead ground wire and cable as a whole, compared with other forms of fiber optic cable, both to shorten the construction period and save construction costs. In addition, if the aluminum-clad steel wire or aluminum wire stranding of OPGW, equivalent to erect a good conductor of the overhead ground wire, you can receive reducing power lines arc current, lower power frequency overvoltage, improve power line communication lines multiple benefits of interference and dangerous impact. Cable applications: ● Replace the existing ground, transforming power optical communication lines ● When you create an overhead power line, and ground synchronized planning ● ● conduction failure to provide the best protection for short-circuit current of stainless steel fiber transmission unit and provides protection against lightning structural features : ● cable diameter is small, light weight, low additional load on the tower ● Stainless steel diameter greater than the aluminum-clad steel wire and aluminum wire ● Stainless steel fiber unit is located in the central part of strangulation layer, protected by a slightly better ● get in the smallest pipe the largest fiber excess length (time) ● When single armored anti-distortion, anti-side pressure, tensile properties somewhat less ● Operating temperature: -40 ℃ ~ + 80 ℃ Installation Design Editor: OPGW installation design, we should consider wire stress, sag and insulating gap with, as well as its load should not exceed the current basis with a tower and permitted range. Therefore should be calculated according to the selected OPGW main technical parameters of its characteristics, combined with practical engineering design junction box, all kinds of fittings and accessories layout, outline drawings and installation diagram. 1. Early treatment for OPGW early elongation elongation process, can be used to cool method, that review OPGW steel than aluminum, similar cooling reference value or ground wire handle its initial elongation. 2. The anti-vibration design fittings measures supporting the use of OPGW, Clamp for wire-cutter style, drape clips with pre-twisted wire, rubber gaskets, which already has two gold with anti-vibration capability. In order to further strengthen anti-vibration capability, consider installing anti-vibration hammer, generally based on the span calculation: downshift from ≤300M, install a damper; time span> 300M, install two damper. 3. OPGW construction Erection Problems Erection OPGW different from ordinary steel cable, pay attention to prevent permanent damage to avoid future affect the performance of the fiber, and should consider: reverse OPGW, and slightly bent, clip outside partial radial stress and pollution of the fiber. Therefore, during the construction phase to take effective measures to solve the following: (1) prevent OPGW reversed in running board and tighten the clamp installation counterweight, anti-twist device; using a special dual-slot pulley; dual winch tension defense machine; (2) to prevent and reduce the stress of OPGW slightly curved and not allowed to have an acute angle occurs (the minimum bend radius control 500mm); OPGW cable disc diameter shall be not less than 1500mm; pulley diameter should be more than 25 times the diameter of OPGW, generally not less than 500mm; medial pulleys have nylon or rubber pads to prevent scratches the surface of OPGW; proper traction lines and actinomycetes fittings; specifies the maximum disk OPGW length 6000M, in order to prevent excessive number of pulleys; continuous line angle limit of actinomycetes ≤30 °, in a section of a strain of actinomycetes, OPGW towards the corner post should show "C" shape; control (3) off tension: the use of hydraulic tension belt tension release mechanism put-ray machine and tractor; actinomycetes speed limit ≤0.5 m / s; (4) to prevent fiber contamination in Erection of OPGW should pay attention to the package to end; in addition, OPGW arrived to the scene, before the erection, erection is carried out after the end of the optical fiber splicing and line construction After the scene in a timely manner should OPGW fiber attenuation acceptance testing. |
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Copyright © GuangDong ICP No. 10089450, Long Optical Communication Technology Co., Ltd. Shanghai All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility
You are the 10211 visitor
Copyright © GuangDong ICP No. 10089450, Long Optical Communication Technology Co., Ltd. Shanghai All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility