In the 110kV~220kV high-voltage power network, the reason for the burning and breaking of the optical fiber cable of the optical fiber communication is caused by electrical corrosion. The main reasons for galvanic corrosion are as follows: (1) Breakdown: The potential of the space where the ADSS optical cable is located is too high, so … Continue reading Causes of ADSS cable Galvanic Corrosion
Drop cable features Drop cable is commonly known as indoor hanging wiring cable. With the domestic optical fiber access market showing a good momentum of development, optical fiber access has become a hot spot in the field of optical communications. In the optical fiber access project, the indoor wiring close to the user is the … Continue reading Features of FTTH Drop Cable
FTTH drop cable is mainly used for the FTTH drop (from the optical fiber distribution box to the user’s home ONT equipment), which is divided into ordinary butterfly drop cable (GJXH), self-supporting butterfly drop cable (GJYXFCH), prefabricated end Butterfly drop cable, invisible butterfly cable and prefabricated invisible cable.
1.Ordinary butterfly drop cable (GJXH)
GJXH optical fiber cable is to put the optical fiber in the center, place two parallel steel wires on both sides as strengthening elements, and extrude the low-smoke halogen-free flame retardant sheath into a cable.
The number of common cores of GJXH optical cable is 1 or 2, the size of the sheath short axis and long axis is 2mm and 3mm, the short-term allowable tensile force (minimum value) is 200N, should be laid along the wall or through the pipe, not suspended.
GJYXFCH cable is a non-metallic common butterfly introduction cable (GJFXH) with an additional reinforcement element (steel wire or wire rope).
GJYXFCH optical cable is commonly used for 1 or 2 cores, the allowable tensile force (minimum value) is 600N, can be short distance (less than 50 meters) suspended, suitable for outdoor introduction to indoor.
3.Preformed end butterfly introduction cable
Preformed end butterfly introduction cable is in the fixed length of 1 core GJXH or GJYXFCH cable at both ends of the prefabricated SC type movable connector plug, to reduce the installation of the site into the end of the workload.
4.Invisible Disc Cable (GJIXH)
The structure of GJIXH optical cable is basically the same as that of ordinary butterfly fiber optic cable. The difference is that the middle part of GJIXH optical cable is a single core invisible cable (GJI). In essence, GJI optical cable is tightly set optical fiber, which is wrapped with a transparent sheath with a diameter of 0.9mm outside the uncolored G.657 optical fiber.
GJI cable is more difficult to lay and more expensive to lay, so it is suitable for the scene where users have higher requirements on the beauty and concealment of indoor wiring.
5. preformed terminal invisible cable
Prefabricated end invisible cable is in the fixed length of GJI cable at both ends of the prefabricated SC type of active connector plug, in order to reduce the installation of the site into the end of the workload.
Preformed end invisible cable use, according to the use of the length of a preformed end cable cut from the middle into 2 sections, can be used for 2 users of the indoor laying; The outdoor part of the user uses butterfly optical cable; Outdoor butterfly optical cable and indoor invisible optical cable in the appropriate position to fuse.
