Joint Closure Dome Heat Shrinkable Seal Fiber Optic Splice Closure (FOSC)
This Installation Manual suits for the Fiber Optic Splice Closure (Hereafter abbreviated as FOSC), as the guidance of proper installation.
The scope of application is: aerial, underground, wall-mounting, duct-mounting and handhole- mounting. The ambient temperature ranges from -40ºC to +65ºC.
2. Basic structure and configuration
2.1 Dimension and capacity
| Outside dimension (Height x Diameter) |
460mm×205mm |
| Weight (excluding outside box) |
2350 g- 3500g |
| Number of inlet/out ports |
5 pieces in general |
| Diameter of fiber cable |
Φ8mm~Φ25 mm |
| Capacity of FOSC |
Bunchy: 24-96(cores), Ribbon: up to288(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
355mm x 150mm |
| 2 |
Fiber optic splice tray (FOST) |
Max. 4 trays (bunchy)
Max. 4 trays (ribbon) |
Fixing heat shrinkable protective sleeve and holding fibers |
Suitable for: Bunchy:24(cores) Ribbon:12(pieces) |
| 3 |
Base |
1set |
Fixing internal and external structure |
|
| 4 |
Plastic hoop |
1 set |
Fixing between FOSC cover and base |
|
| 5 |
Seal fitting |
1 piece |
Sealing between FOSC cover and base |
|
| 6 |
Pressure testing valve |
1 set |
After inject air, it is used for pressure testing and sealing testing |
Configuration as per requirement |
| 7 |
Earthing deriving device |
1 set |
Deriving metal 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 |
Heat shrinkable fixing sleeve (single) |
|
Fixing and sealing single fiber cable |
Configuration as per requirement |
| 4 |
Heat shrinkable fixing sleeve (mass) |
|
Fixing and sealing mass of fiber cable |
Configuration as per requirement |
| 5 |
Branching clip |
|
Branching fiber cables |
Configuration as per requirement |
| 6 |
Earthing wire |
1 piece |
Putting through between earthing devices |
|
| 7 |
Desiccant |
1 bag |
Put into FOSC before sealing for desiccating air |
|
| 8 |
Labeling paper |
1 piece |
Labeling fibers |
|
| 9 |
Special wrench |
1 piece |
Tightening nut of reinforced core |
|
| 10 |
Buffer tube
|
decided by customers |
Hitched to fibers and fixed with FOST, managing buffer. |
Configuration as per requirement |
| 11 |
Aluminum-foil paper |
1 piece |
Protect the bottom of FOSC |
|
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 |
| Fire sprayer |
Sealing heat shrinkable fixing sleeve |
Notice: The above-mentioned tools and testing instruments should be provided by the operators themselves.
Fiber Optic Splice Closures (FOSC) inspecting and testing items
| Inspecting item |
Technical Requirements |
Inspecting type |
| Routine test (Before leaving factory) |
Type test |
| Package |
Each small package contains one fiber optic splice closure, together with its accessories, tools, installation manual and packing list. |
full |
At least 3 sets sampled each time
|
| Appearance |
Intact in shape, no burrs, bubbles, chaps, pores, warps, impurities and other defects, all background colors should be even and continual. |
| Sign |
There is a clear sign on the housing, such as name and model of the product, etc. |
| Fiber storage device |
The fibers reserved are to be winded in fiber optic splice tray (FOST), the length of fibers housed in FOST is >1.6m, the curved radius is >30mm. During the installation and maintenance, there should be no attenuation on fibers. |
At least 3 sets sampled each time
|
| Electrical jointing device |
Inside FOSC: metallic components of fiber cables has the functions of electrical putting through, earthing connection and disconnecting. It is possible to install earthing deriving device outside the housing |
| Sealing performance |
After sealing according to the stipulated operation procedures, the injected air pressure is 100KPa±5Kpa, when immersed in clean water of normal temperature for 15 minutes, there should be no air bubbles, then observed for 24 hours, there should be no change of air pressure. |
| Re-sealing performance |
After reopening and resealing according to the stipulated operation procedures, the injected air pressure is 100KPa±5Kpa, when immersed in clean water of normal temperature for 15 minutes, there should be no air bubbles, then observed for 24 hours, there should be no change of air pressure. |
| Pull |
Bearing pull is >= 800N at axle orientation, there should be no breakage on the housing. |
| Punching |
Bearing pressure of 2000N/10cm for 1 minutes, there should be no breakage on the housing |
| Impact |
Bearing impact energy of 16N•m, 3 times of impacts there should be not breakage on the housing |
| Bending |
The spot between the FOSC and seal fitting can bear bending tension of 150N at bending angle of ±450 for 10 circles, there should be no breakage on the housing |
|
|
| Torsion |
Bearing torsion 50N•m, 10 circle at torsion angle±900,
There should be no breakage on the housing. |
| Temperature circle |
Injected air pressure of 60KPa±5 KPa, the temperature circle ranging from -40ºC~+65ºC, 10 times of the circular tests (one circular consists of high temperature for 2 hours + indoor temperature for 2 hours + low temperature for 2 hours + indoor temperature for 2 hours ) when the pressure declines, the amplitude is <=5Kpa, immerse the swatch in clean water of normal temperature for 15 minutes, there should be no air bubbles. |
| Voltage resistance strength |
After sealing the FOSC according to the stipulated operation procedures, immerse it in clean water of normal temperature in 1.5m depth for 24 hours, there should be no breakdown or arc over between the metallic components of the FOSC, between metallic components and the ground at DC 15KV for 1 minutes. |
| Isolating resistance |
After sealing the FOSC according to stipulated operation procedure, immerse it in clean water in 1.5m depth for 24h, the isolating resistance between the metallic components of the FOSC, between the metallic components and the ground should be >= 2×104MΩ. |
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