Scope of application
This Installation Manual is suitable for the Fiber Optic Splice Closure (hereafter abbreviated as FOSC), guiding proper installation.
The scope of application is: aerial, underground, wall-mounting, and wall-mounting in duct and handhole. The ambient temperature ranges from -40 to +65℃.
Basic structure and configuration
Dimension and capacity
| Outside dimension (LxWxH) |
450×220×110(mm) |
|
Weight (excluding outside box) |
2800g-3300g |
|
Number of inlet/outlet ports |
4 (pieces) on each side (total 8 pieces) |
|
Diameter of fiber cable |
Φ7-Φ20(mm) |
|
Capacity of FOSC |
Bunchy: 12-96(Cores) |
Main components
No. |
Name of components |
Quantity |
Usage |
Remarks |
|
|
1 |
Housing(bottom) |
1 set |
Protecting fiber cable splices in the whole |
Internal diameter: |
|
|
2 |
|
Housing(cover) |
1 set |
Protecting fiber cable splices in the whole |
Internal diameter: |
|
3 |
Insert plate |
2 pairs |
Fixing the housing |
175x56x30(mm) |
|
|
4 |
Fiber optic splice tray |
Max.5 trays (bunchy) or Max. 4 trays (ribbon) |
Fixing the heat-shrinkable protective sleeve and holding fibers |
Suitable for: Bunchy: 12,24(cores) Ribbon: 3 (pieces) |
|
|
5 |
Foundation |
1 set |
Fixing fiber cable, reinforced core, and FOST |
|
|
|
6 |
Seal fitting |
1 set |
Sealing between the FOSC cover and the FOSC bottom |
|
|
|
7 |
|
port plug |
8 pieces |
Sealing empty ports |
|
|
8 |
Fixed bolt |
1 sets |
Fixing the house |
|
|
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 a protective coat |
Configuration as per capacity |
|
3 |
Insulation tape |
1 roll |
Enlarging the diameter of the fiber cable for easy fixing |
|
|
4 |
Seal tape |
1 roll |
Enlarging the diameter of the fiber cable, which fits in with the seal fitting |
Configuration as per specification |
|
5 |
Hanging hook |
1 set |
For aerial use |
|
|
6 |
Earthing wire |
1 piece |
Putting through between the earthing devices |
To put through as per the actual requirement |
|
7 |
Abrasive cloth |
1 piece |
Scratching the fiber cable |
|
|
8 |
Labeling paper |
1 piece |
Labeling fiber |
|
|
9 |
M8 Special wrench |
1 pieces |
Fixing the bolts of the housing and inserting the plate |
|
|
10 |
M6 Special wrench |
1 pieces |
Fixing small bolts of housing |
|
|
11 |
M10 Special wrench |
1 piece |
Tightening nut of reinforced core |
|
|
12 |
Instruction manual |
1 piece |
Standard installation |
|
package
NO. |
specification |
carton size(cm) |
capacity |
N.W |
Remarks |
|
1 |
inner box |
46*22*11 |
1pcs |
2.9-3.4千克 |
Configuration as per weight |
|
2 |
outer box |
61*48*47 |
10pcs |
29-34千克 |
Configuration as per weight |
FOSC Installation Procedure
Step 1: Open the Closure
Clean the installation site and determine where to place the FOSC.
Check all components and accessories in the package.
Disassemble the insert plate using a special wrench.
Remove all locating and fixing bolts, then open the housing.
See Drawing 1
Note: If the weather is poor, pitch a tent for waterproof and dustproof protection.
Step 2: Determine Fiber Cable Length
60 mm: Distance from seal fitting to cable pressboard.
2000 mm: For winding and splicing after stripping.
400 mm: Protective-coated section from fixing point to splice tray.
1600 mm: Bare fiber for coiling after splicing.
See Drawing 2
Note: Reserve enough cable length. Adjust stripping length as needed.
Step 3: Strip Cable Jacket
Use a cutter and stripper to remove the jacket as shown in Drawing 2.
See Drawing 3
Note: Strip section by section if the full length is hard to remove to avoid damage.
Step 4: Prepare Fiber Cores
Wrap tape on the cable, remove filler, clean fibers, and form ~100mm loops.
Choose the number of inlet/outlet ports based on actual cable use.
Port A: Max Ø20mm; Port B: Max Ø14mm.
Use sealing tape if the cable diameter is smaller than the port.
Reserve 40 mm of reinforcing core.
See Drawing 4
Note: Scratch and clean the cable before applying the sealing tape.
Step 5: Fix Cable and Reinforcing Core
Remove the port plug, pressboard, and core nut. Check cable fit.
Tighten the pressboard (use insulation tape if necessary).
Tighten the core nut with a plastic wrench, then a metal wrench.
See Drawing 5
Step 6: Splice Fibers
Use a fusion splicer per the manual to splice fibers.
Note: Avoid twisting or bending.
Step 7: Install Sleeves and House Fibers
Place the first loop at the far end of the tray. Wind fibers ≥80mm loops.
Install a heat shrink sleeve and fit fibers into the tray.
See Drawing 6
Note: Handle fibers gently and maintain proper bend radius.
Step 8: Final Check
Ensure fibers are organized and the bending radius meets spec.
Tighten all inner fasteners.
Block unused ports with plugs.
Apply a proper amount of sealing tape.
Check the sealing surface is smooth and flush.
Close the housing.
See Drawing 7
Step 9: Assemble the Closure
Put the cover on the base.
Insert and tighten locating bolts.
Install and tighten insert plates.
Add a hook for aerial setup if needed, or tighten the 4 corners.
See Drawing 8
Note: Clean surfaces and follow the correct sequence.
Step 10: Mount the Closure
Fix and tighten the closure following Drawing 9.
Note: Retighten after 5 minutes. Avoid overtightening.
Fiber Optic Splice Closures (FOSC) inspection and testing items
|
Inspecting item |
Technical Requirements |
Inspecting type |
|
|
Routine test (Before leaving the 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 the name and model of the product etc. |
||
|
Fiber storage device |
The fibers reserved are to be wound in a fiber optic splice tray (FOST), the length of fibers housed in FOST is >1.6m, and 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 have the functions of electrical transmission, earthing connection, and disconnecting. It is possible to install an 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 in 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 in 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 minute, there should be no breakage on the housing |
||
|
Impact |
Bearing impact energy of 16N•m, 3 times of impacts, there should be no breakage on the housing |
||
|
Bending |
The spot between the FOSC and seal fitting can bear bending tension of 150N at ba ending 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 -40℃~+65℃, 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 for 1.5m 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 minute. |
||
|
Isolating resistance |
After sealing the FOSC according to the stipulated operation procedure, immerse it in clean water at 1.5m 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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