What are the characteristics of leather cable? Leather cable is commonly known as indoor suspension wiring cable. The scientific name of leather cable is: butterfly-shaped lead-in cable for access network; because its shape is butterfly-shaped; so it is also called butterfly cable and figure-of-eight cable.
However, the leather cable is mostly single-core or double-core structure, and it can also be made into a four-core structure. The cross-section is 8-shaped. center. What kind of optical cable should the user's residential building consider? What problems should be paid attention to in the project of leather cable?
It is recommended that users use leather cable, because leather cable is widely used in the access network because of its softness and lightness. like:
1. Special bend-resistant optical fiber provides greater bandwidth and enhances network transmission performance;
2. Two parallel FRP or metal reinforcements make the optical cable have good compression resistance and protect the optical fiber;
3. The optical cable has simple structure, light weight and strong practicability;
4. Unique groove design, easy to peel off, convenient to connect, simplify installation and maintenance;
5. Low-smoke, halogen-free, flame-retardant polyethylene sheath or flame-retardant PVC sheath, environmentally friendly.
6. It can be matched with a variety of on-site connectors and can be terminated on-site.
Specifications for the construction of leather cable
1. Before laying home optical cables, the type of user's residential building, environmental conditions and the laying route of existing cables should be considered. At the same time, it is necessary to make a comprehensive judgment on the economy, safety of construction, convenience of future maintenance and user satisfaction .
2. The existing indoor concealed pipes should be used as much as possible to lay the incoming optical cables. For residential buildings without hidden pipes or unusable indoor underground pipes, it is advisable to lay butterfly-shaped incoming optical cables by laying corrugated pipes in the building.
3. For residential buildings with vertical wiring bridges, it is advisable to install corrugated pipes and floor crossing boxes in the bridges to pass through the butterfly-shaped lead-in optical cables. If there is no space to install corrugated pipes in the bridge frame, winding pipes should be used to wrap the butterfly-shaped lead-in optical cables laid inside to protect the optical cables.
4. Since the butterfly lead-in optical cable cannot be soaked in water for a long time, it is generally not suitable for laying directly in underground pipelines.
5. The minimum bending radius of the laying butterfly-shaped lead-in optical cable should comply with: it should not be less than 30mm during laying; it should not be less than 15mm after fixing.
6. Under normal circumstances, the traction force of the butterfly lead-in cable should not exceed 80% of the allowable tension of the cable; the instantaneous maximum traction force should not exceed 100% of the allowable tension of the cable, and the main traction force should be added to the strengthening member of the cable.
7. The cable reel should be used to carry the butterfly-shaped lead-in cable, and the cable tray should be used when laying the cable, so that the cable reel can rotate automatically to prevent the cable from being entangled.
8.During the laying of the optical cable, strict attention should be paid to the tensile strength and bending radius of the optical fiber to avoid the optical fiber from being entangled, twisted, damaged and trampled.
