Beijing manufacturer now produces OPGW optical cable
PGW optical cable, O PPC Optical cable, ADSS optical cable and our factory can adopt aluminum tube type, aluminum skeleton type and (stainless) Steel pipe Type structure, the optical fiber is sleeved into a casing made of stainless steel, and aluminum clad steel wire is wrapped around the casing（ AS Line), outer wrap aluminium alloy The cable (AA cable) layer is twisted into cable. When the OPGW cable with the first two structures is impacted by the short-circuit current, the aluminum tube and aluminum skeleton will produce relatively high temperature and diffuse to the interior, which will affect the optical fiber transmission and even break the fiber Stainless steel pipe Type A has significantly improved. If the structure contains aluminum, after the temperature exceeds 200 ℃, the aluminum will first produce irreversible plastic deformation. When the structure is damaged, the increased sag of OPGW will not only fail to maintain a safe distance with the conductor, but also may collide with the conductor. If it is a full steel structure, it can work at 300 ℃ for a short time
Common OPGW structure
There are three main categories: aluminum pipe type, aluminum skeleton type and (stainless) steel pipe type.
The installation design of OPGW shall consider the coordination with conductor stress, sag and insulation gap, and its load shall not exceed the allowable use range of the existing tower and foundation. Therefore, the characteristic curve shall be calculated according to the main technical parameters of the selected OPGW, and the layout, outline and installation drawings of junction boxes, various hardware fittings and accessories shall be designed in combination with the actual project.
