OPGW fiber optic cable, all metal armored fiber optic cable, ADSS fiber optic cable, all dielectric self-supporting fiber optic cable

Description :

　　Introduction: OPGW optical cable (also known as fiber optic composite overhead ground wire) is a structure in which optical fibers are placed in the ground wire of overhead high-voltage transmission lines to form a fiber optic communication network on the transmission lines. This structural form has dual functions of ground wire and communication, and is generally referred to as OPGW optical cable. A 250 μ m optical fiber is inserted into a loose tube made of high modulus material, and the loose tube is filled with waterproof compound. A layer of double-sided plastic coated steel strip (PSP) is wrapped longitudinally outside the loose tube, and a water-resistant material is added between the steel strip and the loose tube to ensure the compactness and longitudinal water resistance of the optical cable. Two parallel steel wires are placed on both sides and extruded into a polyethylene sheath to form the cable.

　　Characteristics: 1. Lines with high voltage exceeding 110kV have a large span (usually above 250M).

　　2. Easy to maintain, easy to solve for line crossing problems, and its mechanical characteristics can meet the requirements for large line crossings.

　　3. The outer layer of OPGW is metal armor, which has no effect on high-voltage corrosion and degradation.

　　4. OPGW must be powered off during construction, and the losses caused by power outages are significant. Therefore, OPGW should be used in the construction of new high-voltage lines above 110kV.

　　In the performance indicators of OPGW, the larger the short-circuit current, the more it is necessary to use good conductors for armor, which correspondingly reduces the tensile strength. However, in the case of a certain tensile strength, the only way to increase the short-circuit current capacity is to increase the metal cross-sectional area.

　　Structure: OPGW optical cables are mainly used on 500kV, 220kV, and 110kV voltage level lines. Due to factors such as power outages and safety, they are often applied on newly built lines. There are three main categories: aluminum steel type, aluminum skeleton type, and (stainless) steel pipe type.

　　Ordering instructions: 1. Usage scenarios must be provided, such as mountains and forests, crossing rivers, bridges, underwater, pipelines, wind farms, etc.

　　2. Design requirements such as number of cores, model span, tension, cross-section, and material requirements must be provided.

　　3. It is necessary to provide the types of optical cable requirements, including center tube structure and layer twisted structure.

　　If customized, other known detailed technical parameters or design drawings need to be provided

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