24 core OPGW fiber optic cable price, OPGW fiber optic cable, OPGW fiber optic cable special offer

Description :

　　OPGW fiber optic cable product description:

　　OPGW optical cables can adopt aluminum tube type, aluminum skeleton type, and (stainless) steel tube type structures according to user needs. The optical fibers are sheathed in stainless steel sleeves, surrounded by aluminum clad steel wire (AS wire) and wrapped with aluminum alloy wire (AA wire) layers to form cables. When the first two structures of OPGW are subjected to short-circuit current impact, the aluminum tube and aluminum frame will generate relatively high temperatures and diffuse inward, thereby affecting fiber transmission and even fiber breakage, while the stainless steel tube type significantly improves the situation. If the structure contains aluminum, after exceeding 200 ℃, the aluminum will first undergo irreversible plastic deformation. At the same time as the structure is damaged, the increased sag of OPGW not only cannot maintain a safe distance from the conductor, but may also collide with the conductor. If it is an all steel structure, it can work at 300 ℃ for a short time.

　　Product Features:

　　The design of OPGW optical cable fully considers the actual situation of power lines and is applicable to any newly built high-voltage transmission line. We can carefully design matching products to meet the needs of users with different tensile strengths and short-circuit currents, in order to achieve a balance between mechanical and electrical performance.

　　Product Application:

　　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. Lines with high voltage exceeding 110KV have a large span (usually above 250M). Easy to maintain, easy to solve for line crossing problems, and its mechanical characteristics can meet the requirements for large line crossings; The outer layer of OPGW is metal armor, which has no effect on high-voltage corrosion and degradation.

　　Process standard method:

　　1. The sag of the tight wire should be checked immediately after hanging the wire, and its allowable deviation should comply with the following regulations:

　　2. In general, the allowable deviation for 110kV transmission lines is ≤+5% and -2.5%; Allowable deviation for 220kV and above lines is ≤± 2.5%;

　　3. The allowable deviation of sag for large spans crossing navigable rivers is ≤± 1%, and its positive deviation is ≤ lm.

　　4. When crossing power lines, the clearance distance between the optical cable and the crossed conductor should comply with the regulations when the crossed conductor is in a large sag state.

　　5. When hanging the line, the over traction length for ten isolated gears, small tension sections, and large spans shall not exceed the design value.

　　6. The construction of optical cable installation should use tension pay off.

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