Introduction to covered optical cables and laying construction steps
Covered optical cables are mostly single-core or double-core structures. They can also be made into four-core structures. The cross-section is in a figure-8 shape, and the reinforcement is located at the center of the two circles. It can adopt metal or non-metal structure, and the optical fiber is located in the geometric center of the figure-8 shape.
The optical fiber in the covered optical cable adopts G.657 small bending radius optical fiber, which can be laid with a bending radius of 20mm, and is suitable for entering the building through pipes or open wires.
The dish-shaped drop-in optical cable for access network (for indoor wiring) is Place the optical communication unit (optical fiber) in the center, place two parallel non-metal reinforcements (FRP) or metal reinforcement members on both sides, and then extrude black or colored polyvinyl chloride (PVC) or low-smoke halogen-free material (LSZH, Low smoke, halogen-free, flame retardant) sheathed.Laying construction steps: 1. Determine the laying route of the covered optical cable, and investigate whether there are available supports on the route for the laid outdoor covered optical cable. Generally, each support can be fixed 8 outdoor optical fiber cables.
2. Select supports and their installation locations based on the principles of firm installation, even spacing, and ease of maintenance.
3. Use steel straps and clamps to fix the hooks on the poles; use expansion screws and screws to fix the C-shaped hooks on the exterior walls. For wooden exterior walls, they can be directly attached The ring-type draw hook is fixed on it.
4. Separate the hanging wire of the outdoor covered optical cable, tie the hanging wire to the S fixture, and then hang it on the support. When the length of the covered optical cable to be laid exceeds 100 meters, it is advisable to Choose to start the layout from the middle point.
