Horizontal Fiber Optic Splice Closure (FOSC)
EK08-F24
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, wall-mounting, wall-mounting in duct and 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) | 400×185×104(mm) |
Weight (excluding outside box) | 1900g-2100g |
Number of inlet/outlet ports | 6 ports |
Diameter of fiber cable | Φ7—Φ16(mm) |
Capacity of FOSC | Bunchy: 6—96(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 | Insert plate | 2 pairs | Fixing the housing | 175x56x30(mm) | |
3 | Fiber optic splice tray | Max. 4 trays (bunchy) | Fixing heat shrinkable protective sleeve and holding fibers | Suitable for: Bunchy: 6,8,12,16,24(cores) Ribbon: 3 (pieces) | |
4 | Foundation | 1 set | Fixing fiber cable, reinforced core and FOST |
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5 | Seal fitting | 1 set | Sealing between FOSC cover and FOSC bottom |
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6 | Port plug | 6 pieces | Sealing empty ports |
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7 | Earthing deriving device | 1 set | Deriving metallic parts of fiber cables 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 |
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6 | Earthing wire | 1 piece | Putting through between earthing devices | To put through as per actual requirement |
7 | Abrasive cloth | 1 piece | Scratching fiber cable |
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8 | Labeling paper | 1 piece | Labeling fiber |
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9 | Special wrench | 3 pieces | Fixing bolts, tightening nut of reinforced core |
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10 | Measuring paper | 1 piece | To measure perimeter of fiber cable, of which the diameter is enlarged with seal tape | To measure perimeter with the corresponding measuring paper |
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. |
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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
5.1Step One - Open the closure
5.1.1 Cleaning the locale and determine where to install the FOSC and then place
fiber cables required.
5.1.2 Check whether the main components and accessories have been well prepared
inside the package.
5.1.3 Open the closure
① Demount the fixing bolt of insert plate with a special wrench. Put out the fixing bolt,Use the special wrench and stroke on the other side of the insert plat,The insert plate will be unloading.
② Use the special wrench to demount all the locating bolts on the housing as well as
fixing bolts (it is also possible to install hanging hook according to the installation
requirement) at four corners, then succeed in opening the closure.
5.1.4 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 60mm length: the distance from seal fitting to fiber cable pressboard
②. Fiber cable in 1950mm length: it is used to be winded and spliced after stripping.
③. Fiber with protective coat in 350mm 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 prepares 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.
5.4.2This FOSC is provided with 6 inlet/outlet ports. The inlet/outlet ports could be decided according to number and diameters of fiber cables to be actually installed, then the corresponding number of port plugs should be taken out.
5.4.3 This FOSC is suitable for the following diameters of fiber cables respectively:
Port A: suitable for fiber cable with max. diameter ф16mm
Port B: suitable for fiber cable with max. diameter ф13mm
5.4.4The 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 seal tape should be used to enlarge the diameter of fiber cable, of which the perimeter could be measured by the corresponding measuring paper (marked with Hole A, Hole B).
5.4.5 Reserve reinforced core in 35mm 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 should be scratched and to be cleaned with abrasive cloth and ethyl alcohol.
2. Cut off reinforced core with special cutting pliers.
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. Make sure to check whether the fiber cable stripped fits in with the fixing ports or not. If not, the adjustment should be done in time. Otherwise it will affect installation quality.
5.5.2Tighten fiber cable pressboard. If the diameter of fiber cable is small, 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.
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 protective sleeve. (Firstly fix heat shrinkable protective sleeve into the slot, this tray can do 24 cores, heat shrinkable protective sleeve could fixed upper and lower tiers,then enlarge the diameter of fiber ring properly.) See Drawing 6
5.7.2 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 installed 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. If not, level it up with seal tape.
5.8.6Seal the cover of seal fitting
5.8.7See Drawing 7
5.9 Step Nine – Assemble FOSC housing
5.9.1 Put the FOSC cover on the FOSC bottom directly.
5.9.2 Insert locating bolt of FOSC and tighten it with the special wrench.
5.9.3 Put the insert plates into the slot and with special wrench on the other end knocked tight. (One pair on each side, one piece with a hole with screw thread in the middle, the other with a hole without screw thread in the middle). Properly tighten bolts of insert plate with the special wrench..
5.9.4If the FOSC is for aerial application, then put the hanging hook on one side of the closure and then tighten fixing bolts on both sides. Otherwise tighten the 4 fixing bolts at four corners respectively.
5.9.5 See drawing 8
Important issues: cleaning the housing and pay attention to the above sequence.
5.10 Step Ten - Fix FOSC.
5.10.1Fixing the FOSC and tighten bolts in sequence as per drawing 9.
Important issues: Retighten in five minutes Tighten properly to avoid the closure to be out of shape.
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 have 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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