As we all know, most of the sheathed optical cables are single-core or double-core structures, and can also be made into a four-core structure. The cross-section is in a figure-eight shape. geometric center. So, how to install the leather cable in the centralized residence?
How to install leather-line optical cables in centralized residences: new residential buildings (with wire ducts and bridges installed)
For the newly built residential buildings with installed wire ducts and bridges, the laying of the leather wires and optical cables is mainly based on the wiring ducts.
1. In the vertical direction of the building, the leather cable should be laid in the weak current shaft by means of cable tray or cable trough. The cable tray or cable trough should be made of metal material, and the section utilization rate of the trunking should not exceed 50%. %.
2. The sheathed optical cable should be laid in a straight line without crossing, and the sheathed optical cable should be bound and fixed at the entry and exit parts and corners of the trunking; the sheathed optical cable in the vertical trunking should be fixed every 1.5m.
3. When laying the cable inside the bridge vertically, from the upper end of the cable downward, it should be bound and fixed at intervals of 1.5m. When laying horizontally, it should be bound at the head, tail, turning and every 5-10m of the cable. fixed.
4. Combine the wire trough and its accessories according to the actual situation on site. When cutting the straight groove, because the wire trough cover and the bottom groove are paired, it is generally not suitable to deal with the wire trough cover and the bottom groove separately.
5. Put the fiber optic cable into the trunking. When closing the cover of the trunking, be careful not to clamp the fiber optic cable on the bottom trough.
How to install the leather cable in the centralized residence: new residential buildings (dark pipes have been laid)
New residential buildings with hidden pipes already laid out: The laying of the leather cable is mainly based on the laying of hidden pipes.
Inorganic lubricating materials such as paraffin oil, talcum powder, lubricant, etc. can be used when using a pipe threader to lay an optical fiber cable into a home in a dark pipe. The vertical pipe is allowed to wear multiple indoor leather-line optical cables. The leather cable should be laid separately from the optical fiber distribution box to the user's home optical terminal box, and try to avoid sharing a pre-buried pipe with other cables. After pulling the sheathed optical cable out of the pipe hole, you should check whether there is any depression or damage on the lead-out section of the sheathed optical cable with your hands and eyes respectively. Check the length of the pull-out cable, and cut the pull-out cable. Be careful not to cut it too short, you must reserve the length for making the optical fiber mechanical splicing connector.
Leather cable
How to install the leather wire optical cable in the centralized residence: the new residential building (wireless slot, bridge, dark pipe)
(1) Drilling floor holes and laying hidden pipes
For new residential buildings, pre-buried hidden pipes can be used in buildings without shafts. The hidden pipes should be made of steel pipes or flame-retardant rigid PVC pipes, and the pipe diameter should not be less than φ50mm. The utilization rate of the diameter of the straight pipe shall not exceed 60%, and the utilization rate of the pipe diameter of the bent pipe shall not exceed 50%. In the horizontal direction of the building, the cable laying can be pre-buried steel pipes and flame-retardant rigid PVC pipes or trunkings. The pipe diameter should be φ15-φ25mm, and the bending radius of the hidden pipe should be 10 times greater than the pipe diameter. When the outer diameter is less than 25mm , its bending radius should be greater than 6 times the pipe diameter, and the bending angle should not be less than 90 degrees.
(2) Laying the trunking
For new residential buildings, in buildings without vertical shafts, wire ducts can be laid along the wall. In order not to affect the appearance, the leather cable should be routed along the skirting line, door frame, etc. as much as possible, and choose a route with fewer corners and a flat and smooth wall (double-sided tape can be used to fix the wire groove). The sheathed optical cable should be laid in a straight line without crossing, and the sheathed optical cable should be bound and fixed at the entry and exit parts and corners of the trunking; the sheathed optical cable in the vertical trunking should be fixed once every 1.5m. The wire duct and its accessories are combined according to the actual situation on site. When cutting the straight groove, since the wire duct cover and the bottom groove are paired, it is generally not suitable to deal with the wire duct cover and the bottom groove separately.
How to install the leather cable in the centralized residence: the existing residential building (the leather cable replaces the existing telephone line and Category 5 cable)
Residential buildings where the existing telephone lines and Category 5 lines have all been replaced with leather cable: with the consent of the owner, the leather cable shall be laid in the form of indoor/outdoor nailing and corrugated pipe laying.
(1) Drilling holes in the floor slab, nailing the fiber optic cables indoors and outdoors
Choose the route of nailing the fiber optic cable. Generally, the fiber optic cable should be nailed on the wall that is hidden and difficult to reach by hand, but a safe place that is not easily affected by external force should be selected. When nailing the sheathed optical cable indoors, a clip fastener should be used; when nailing the outdoor sheathed optical cable outdoors, a screw fastener should be used. When using the method of nailing the cable, it should be fixed with clips or screw buckles every 50cm. Care must be taken not to damage the optical fiber cable. When crossing the wall, a protective tube should be covered. Distortion, damage, etc.
(2) Laying corrugated pipes
Choose the bellows layout route. The bellows should be installed in places that cannot be touched by human hands as much as possible, and should not be installed in a position that damages the appearance. Generally, bellows with an outer diameter of not less than 25mm should be used. Determine the installation position of the passing box, and set the passing box at the entrance of the residential unit and the intersection of the horizontal and vertical pipes; when the straight section of the horizontal corrugated pipe exceeds 30m or the length of the section exceeds 15m and there are more than 2 90° bends When , a pass-through box should be set. Install the pipe clamp and fix the corrugated pipe. At the corner of the route or the concave and convex of the building, the corrugated pipe should be installed and fixed after maintaining a certain arc to ensure the bending radius of the leather cable and facilitate the passage of the cable. There is no need to leave extra length for the leather cable in the passing box, as long as the bending radius of the leather cable is satisfied.
How to install leather-line optical cables in centralized residences: existing residential buildings (relying on existing five types of cables)
Residential buildings with existing Category 5 lines and short service life of Category 5 lines: Reuse existing Category 5 lines and adopt FTTB+LAN mode.
How to install the leather cable in the centralized residence: the new rural residential area
New rural residential area: according to the way of laying the optical cable of the new area.
Wall openings and cable routing
When the leather cable reaches the outside of the household through the laying of hidden pipes, wire grooves, indoor/outdoor nailing, etc., the wall excavation and the penetration of the leather cable are used to enter the house.
1. Determine the location where it crosses the wall according to the laying route of the home leather cable. Generally, it is advisable to use the existing weak current wall holes to pass through the optical fiber cables. For buildings without existing wall holes, try to choose to open the wall holes in a hidden and unobstructed position.
2. Determine the number of leather cables to be put through (according to the number of households), and select the size of the hole in the wall. Generally, a hole with a diameter of 10mm can wear two leather cables.
3. Select the drilling tool (electric drill or impact drill) and the specifications of the drill bit according to the material and size of the opening in the wall.
4. In order to prevent the inflow of rainwater, drilling should be carried out from the inner wall to the outer wall and inclined at 10°.
5. After the wall is opened, in order to ensure the beauty of the drilled hole, the inner wall should be sleeved with a wall casing in the wall hole or a wall decorative cover should be installed at the wall hole.
6. If the opening of the wall is larger than expected, it can be repaired with cement, and the appearance of the opening should be as good as possible.
7. Pass the leather cable through the hole, and wrap the leather cable passing through the wall hole with a winding tube to prevent the cable from cracking.
8. After the leather cable passes through the wall hole, the outer wall should be blocked with fillers such as plugging mud and silica gel to prevent rainwater from infiltrating or insects from crawling in.
9. There should be a certain arc at both ends of the leather cable passing through the wall to ensure the bending radius of the leather cable.
The above is the whole content of how to install the leather cable in the centralized residence. In fact, the optical fiber in the leather cable adopts G.657 small bending radius optical fiber, which can be laid with a bending radius of 20mm. household.
