Description:
1.The scope of application is: aerial, underground, wall-mounting, duct-mounting,
handhole-mounting. The ambient temperature ranges from -40℃ to
+65℃.
2. Basic structure and configuration
2.1 Dimension and capacity
| Outside dimension (Height x Diameter) | 480mm×220mm |
| Weight (excluding outside box) | 3500g—4100 g |
| Number of inlet/out ports | 6 pieces |
| Diameter of fiber cable | Φ8mm～Φ21mm |
| Capacity of FOSC | Bunchy:24-288 (cores), Ribbon: up to 432(cores) |
2.2 Main components
| No. | Name of components | Quantity | Usage | Remarks |
| 1 | FOSC cover | 1 piece | Protecting fiber cable splices in whole | Height x Diameter 400mm x 220mm |
| 2 | Fiber optic splice tray (FOST) | Max. 6 trays (either bunchy or ribbon | Fixing heat shrinkable protective sleeve and holding fibers | Suitable for: Bunchy: 24,36, 48, 72 (cores) Ribbon:12,18 (pieces) |
| 3 | Base | 1set | Fixing internal and external structure | |
| 4 | Fiber holding tray | 1 pcs | Holding fiber with protective coat | |
| 5 | Plastic hoop | 1 set | Fixing between FOSC cover and base | |
| 6 | Gasket ring | 1 set | Big gasket ring is used to seal FOSC cover and base. Small gasket ring is used to seal entry/exit tube | 1 piece of big gasket ring, 6 pieces of small gasket ring |
| 7 | Pressure testing valve | 1 set | After inject air, it is used for pressure testing and sealing
testing | Configuration as per requirement |
| 8 | Earthing deriving device | 1 set | Deriving metallic parts of fiber cables in FOSC for earthing
connection | Configuration as per requirement |
2.3 Main accessories and special tools
| No. | Name of accessories | Quantity | Usage | Remarks |
| 1 | Heat shrinkable protective sleeve | | Protecting fiber splices | Configuration as per capacity |
| 2 | Nylon tie | | Fixing fiber with protective coat | Configuration as per capacity |
| 3 | Earthing wire | 1 piece | Putting through between earthing devices | |
| 4 | Abrasive cloth | 1 piece | Scratching fiber cables | |
| 5 | Labeling paper | 1 piece | Labeling fibers | |
| 6 | Special wrench | 2 pieces | Installing and tightening nut of reinforced core and nut (plastic)
of entry/exit tube | |
| 7 | Measuring paper | 1 piece | To measure perimeter of fiber cable, of which the diameter is
enlarged with seal tape | |
| 8 | Seal tape | 1 ring | Enlarging diameter of fiber cable which fits in with gasket ring. | Configuration as per specification |
| 9 | Insulation tape | 1 ring | Enlarging diameter of fiber cable for easy fixing | |
| 10 | Metal hoop | 1 set | For wall mounting and pole hugging | |
| 11 | Buffer tube
| decided by customers | Hitched to fibers and fixed with FOST, managing buffer. | Configuration as per requirement |
| 12 | Desiccant | 1 bag | Put into FOSC before sealing for desiccating air | |
3. Necessary tools for installation
3.1 Supplementary materials (to be provided by operator)
| Name of materials | Usage |
| Scotch tape | Labeling, temporarily fixing |
| Ethyl alcohol | Cleaning |
| Gauze | Cleaning |
3.2 Special tools (to be provided by operator)
| Name of tools | Usage |
| Fiber cutter | Cutting off fiber cable |
| Fiber stripper | Strip off protective coat of fiber cable |
| Combo tools | Assembling FOSC |
3.3 Universal tools(to be provided by operator)
| Name of tools | Usage and specification |
| Band tape | Measuring fiber cable |
| Pipe cutter | Cutting fiber cable |
| Electrical cutter | Take off protective coat of fiber cable |
| Combination pliers | Cutting off reinforced core |
| Screwdriver | Crossing/Paralleling screwdriver |
| Scissor | |
| Waterproof cover | Waterproof, dustproof |
| Metal wrench | Tightening nut of reinforced core |
3.4 Splicing and testing instruments (to be provided by operator)
| Name of instruments | Usage and specification |
| Fusion Splicing Machine | Fiber splicing |
| OT DR | Splicing testing |
| Provisional splicing tools | Provisional testing |
Notice: The above-mentioned tools and testing instruments should be
provided by the operators themselves.
4. The process of installing FOSC.
Step One - Open the closure
Cleaning the locale and determine where to install the FOSC and
then place
fiber cables required.
Check whether the main components and accessories have been well
prepared
inside the package.
Open the closure
- Demount hoop fixing bolt and pull hoop locking system out, then
proceed in
demounting the hoop.
- Pull the FOSC cover upwards out, installation could begin.
See Drawing 1
Important issues: If the weather condition is not good enough, then a tent must
be pitched for waterproof and dustproof.
Step Two -Determine length of fiber cable to be fixed and stripped
inside FOSC
4.2.1 ①. Fiber cable in 120mm length: the distance from small
gasket ring to fiber cable
pressboard
②. Fiber cable in 1740mm length: it is used to be winded and
spliced after stripping.
③. Fiber with protective coat in 140mm length: the distance from
the fixing point of
fiber cable to the fixing point of FOST (fiber optic splice tray).
④. Fiber in 1600mm length: after stripping off the protective coat,
it is to be winded inside the FOST after splicing with other fibers
4.2.2 See Drawing 2
Important issues: 1. Reserve enough length of fiber cable to be
spliced.
2. Stripping length also could be decided by customers according to
installation requirement
