Horizontal Fiber Optic Splice Closure (FOSC)
EK08-F25
Installation Manual
1. Scope of application
This Installation Manual is suit for the Fiber Optic Splice Closure (Hereafter abbreviated as FOSC), as the guidance of proper installation.
The scope of application is: aerial, underground, pipeline, handhole. The ambient temperature ranges from -40 to 65℃.
2. Basic structure and configuration
2.1 Product picture
2.2 Dimension and capacity
Outside dimension (LxWxH) | 385x248x120 (mm) |
Weight (excluding outside box) | 3200g – 3600g |
Number of inlet/outlet ports | 6 (pieces) on each side |
Diameter of fiber cable | Φ8—Φ23 (mm) |
Capacity of FOSC | Bunchy: 12—288 (Cores) |
2.3 Main components
No. | Name of components | Quantity | Usage | Remarks | |
1 | Housing | 1 set | Protecting fiber cable splices in whole | Internal diameter: | |
2 | Fiber optic splice tray | max 9 pieces (bunchy) | Fixing heat shrinkable protective sleeve and holding fibers | Suitable for: | |
3 | Seal fitting | 1 set | Sealing between FOSC cover and FOSC bottom |
| |
4 | Port plug | 6 pieces | Sealing empty ports |
| |
6 | Pressure | 1 set | After injecting air, it is used for pressure testing and sealing testing | Configuration as per requirement | |
7 | Earthing deriving device | 1 set | Deriving metallic components of fiber cable in FOSC for earthing connection | Configuration as per requirement |
2.4 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 | Insulation tape | 1 roll | Enlarging diameter of fiber cable for easy fixing |
|
4 | Seal tape | 1 roll | Enlarging diameter of fiber cable which fits in with seal fitting | Configuration as per specification |
5 | Hanging hook | 1 set | For aerial use |
|
6 | Earthing wire | 1 piece | Putting through between earthing devices |
|
7 | Abrasive cloth | 1 piece | Scratching fiber cable |
|
8 | Labeling paper | 1 piece | Labeling fiber |
|
9 | Special wrench | 3 pieces | Fixing bolts, tightening nut of reinforced core |
|
10 | Measuring paper | 1 piece | To measure circle, of which its diameter is enlarged with seal tape |
|
11 | Buffer tube | To be 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 fibers |
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. Installation flow chart
5.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
Unscrew fixing bolts and open the closure by lifting the unscrewed bolts with no need completely unbolting to avoid loosing.
See Drawing 1
Important issues: If the weather condition is not good enough, then a tent must be pitched
for waterproof and dustproof.
5.2 Step Two -Determine length of fiber cable to be fixed and stripped inside FOSC
5.2.1 ①. Fiber cable in 45mm length: the distance from seal fitting to fiber cable pressboard
②. Fiber cable in 1750mm length: it is used to be winded and spliced after stripping.
③. Fiber with protective coat in 150mm 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
5.2.2 See Drawing 2
Important issues:
1.Reserve enough length of fiber cable to be spliced.
2.Stripping length also could be decided by customer according to installation requirement.
5.3 Step Three – Strip off fiber protective coat of fiber cable and fiber
5.3.1 Strip off protective coat of fiber cable from the temp. locating mark with the cutter and the
stripper, please refer to Drawing 2 for stripping length. Stripping length also could be
decided according to installation requirement
5.3.2 See Drawing 3.
Important issues: If it is difficult to pull all the protective coat of fiber cable at one time, strip
it off section by section to avoid fiber breakage.
5.4 Step Four – Separate fiber cores and prepare work prior to fixing fiber.
5.4.1 Wind 2 layers of insulation tape on protective coat of fiber core. Meanwhile, get rid of
the stuffing to separate fiber core and clean them. Form a ring with the diameter
of 100mm or so and fix it on the fiber temporarily by adhesive tape.
5.4.2 This FOSC is provided with six inlet/outlet ports. Number of fiber cables is determined
by the customers according to their actual requirements and the corresponding number
of port plugs should be taken out. The max number of fiber cables to be installed is six.
5.4.3 This FOSC is suitable for the following diameters of fiber cables respectively:
Port A: suitable for fiber cable with max. external diameter ф23mm
Port B: suitable for fiber cable with max. external diameter ф20mm
Port C: suitable for fiber cable with max. external diameter ф16mm
5.4.4 The corresponding inlet/outlet ports are to be selected according to fiber cables
actually installed. When the diameter of fiber cable is smaller than that of the
inlet/outlet port, then the sealing tape should be used to enlarge the external diameter of
fiber cable, of which the perimeter could be measured by measuring paper marked by Hole A, Hole B, Hole C, coming as accessories.
5.4.5 Reserve reinforced core in 40mm length and cut off the unnecessary ones.
5.4.6 See Drawing 4
Important Issues: 1. Before the seal tape is used for enlarging the fiber cable diameter, it shouldbe scratched and to be cleaned with abrasive cloth and ethyl alcohol.
2. Cut off reinforced core with a special cutting plier.
5.5 Step Five - Fix reinforced core and fiber cable
5.5.1 Upon finishing the above steps, then demount port plugs, pressboard and fixing nut of
reinforced core.
5.5.2Tighten fiber cable pressboard. If the diameter of fiber cable is not big enough, then
enlarge it with insulation tape.
5.5.3Tighten nut of reinforced core with the special wrench (plastic) and then retighten it with
the metal wrench.(the metal wrench should be provided by operator).
5.5.4 See Drawing 5
5.6 Step Six - Splice fibers
5.6.1 Follow user manual of fusion splicing machine to splice fiber cores.
Important issue: pay attention to the twist and bend of fiber.
5.7 Step Seven -Install heat shrinkable protective sleeve and house fibers
5.7.1 When having completed splicing the fibers, the first fiber ring should be housed
on the farthest side of FOST, the remaining fiber should be winded, forming a ring
with diameter not less than 80mm. then put it into FOST (Fiber Optic Splice Tray)
together with heat shrinkable sleeve for splice protection.
( Firstly fix heat shrinkable protective sleeve into the slot, then enlarge the diameter of
fiber ring properly.)
5.7.2 see Drawing 6
Important issue: pay attention to the twist and bend of fiber.
5.8 Step Eight - Check up comprehensively
To ensure the technical requirements, the following instructions must be followed:
5.8.1The fibers in the FOST are spliced and installed orderly. The curved diameter
of fiber meets with the technical requirements.
5.8.2The internal tighteners are tightened.
5.8.3The inlet/outlet ports without fiber cables must be blocked up with the port plugs.
5.8.4Control the amount of seal tape within a proper range.
5.8.5Seal fitting is installed neatly and smoothly.
5.8.6Seal the cover of seal fitting
5.8.7See Drawing 7-1
5.9Characteristics
5.9.1The closure is used for splicing part of main fiber cable with branching fiber cable, and meanwhile splicing its rest part with pigtail or drop cable, connecting optical exchange equipment via patchcord. Therefore it saves costs by eliminating splicing unit, distribution unit, distribution box and all the work between fiber optic splice closure and distribution box.
5.9.2It is easy and fast to increase FOST. The SLIDE-IN-LOCK design of FOST with the opening angle 900 makes expansion and maintenance convenient.
5.9.3The distribution unit can have FC, SC, ST, LC adapter front panel to meet with customers various needs. The installation is very easy.
5.9.4Inovative design, easy installation. Based on the advanced formula, the plastic part is made of injection-molded, high-strength engineering plastic PC. It ensures long-term reliability and usage under ambient temperature -40℃- +65℃.
5.9.5The elastic intergrated seal fitting, our patented product, can be reused for many times, it ensures good-resealing performance
5.9.6Multi-functional fiber optic splice closure can be used for wall-mounting and pole-mounting application. It saves the cost for FTTH application and improve quality of telecommunication.
5.9.7See Drawing 7-2
6.10 Step Ten – Assemble FOSC housing
6.10.1 Put the FOSC cover properly.
6.10.2 Insert locating bolt of FOSC and tighten it with the special wrench.
6.10.3 If the FOSC is for aerial application or wall-mounting application, then put the
hanging hook on one side of the closure and then tighten fixing bolts on both sides.
6.10.4 Tight fixing bolt once more properly
6.10.5 See drawing 8
Important issues: cleaning the housing and pay attention to the above sequence.
6. 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 | At least 3 sets sampled each time | At least 3 sets sampled each time |
Torsion | Bearing torsion 50N•m, 10 circle at torsion angle±900, | ||
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 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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