OPGW optical cable,
brief introduction: OPGW optical cable (also known as optical fiber composite overhead ground wire), the optical fiber is placed in the ground wire of overhead high-voltage transmission line to form the optical fiber communication network on the transmission line. This structure has dual functions of ground wire and communication, and is generally referred to as OPGW optical cable. The 250 μ M optical fiber is sheathed in the 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 used for longitudinal wrapping outside the loose tube. Water blocking material is added between the steel strip and the loose tube to ensure the compact and longitudinal water resistance of the optical cable. Two parallel steel wires are placed on both sides, and then the polyethylene sheath is extruded to form the cable.
Structure: OPGW optical cable is mainly used on 500kV, 220kV and 110kV voltage grade lines. Affected by power failure, safety and other factors, OPGW cables are mostly used in new lines. There are three main types: aluminum steel type, aluminum skeleton type and (stainless) steel pipe type.
Features: 1. High voltage line over 110 kV, the span is large (generally more than 250 m).
2. Easy to maintain, easy to solve the problem of line crossing, and its mechanical characteristics can meet the requirements of large-scale line crossing.
3. The outer layer of OPGW is metal armored, which has no effect on high voltage corrosion and degradation.
4. OPGW must be cut off during construction, and the power loss is large. Therefore, OPGW should be used in the newly-built high-voltage lines above 110kV.
5. Among the performance indexes of OPGW, the higher the short-circuit current is, the more need to use good conductor for armor, and the tensile strength will be reduced accordingly,When the tensile strength is fixed, the only way to improve the short-circuit current capacity is to increase the metal cross-sectional area, which will lead to the increase of cable weight and cable diameter, thus posing a safety problem for the line tower strength.

order notes: 1. It is required to provide the use scenarios, such as mountains and forests, river crossing, bridge crossing, seabed, pipeline, wind farm, etc.
2. The number of cores, model span, tension, cross-section and material requirements required for design shall be provided.
3. Need to provide the type of optical cable demand, central tube structure, layer stranded structure.
4. If customized, other known detailed technical parameters or design drawings shall be provided.