Introduction To The Instructions For Use Of Fiber Optic Splice Closure

In the communications profession, we sometimes need to use the Fiber Optic Splice Closure , then the construction personnel must understand how to use the Fiber Optic Splice Closure, this is very important, the following is its instructions.

1. If it is a normal optical cable, it will directly enter the connector box through the inlet hole. If it is a micro cable, it is the micro tube entering the connector box and fixed. The micro cable enters the connector box from the micro tube and fixes the reinforcing core. If it is a base tube Cable, need to fix the reinforcing yarn.

2. Open and strip the optical cable, remove the outer sheath, inner sheath and loose tube, clean and remove the petroleum filling paste in the cable, and leave the fiber length of 1.1–1.6m and the reinforcing core of 30–50mm.

3, fix the pressure cable card, fix the micro tube or the cable, the micro tube long pressure cable card 5-10mm, together fix the cable reinforcement core, if it is the base tube cable, you need to fix the reinforcement yarn.

4. Introduce the optical fiber into the welding plate, place the heat-shrinkable tube and the hot-melt tube on any one of the treated fibers, and after welding the fiber, move the heat shrinkable and hot-melt tube, and put on the stainless steel (or quartz) reinforcing core rod. So that the fiber fusion point is in the center of the fiber maintenance tube, properly heat the maintenance tube, fuse the fiber and the maintenance tube, and the maintained fiber connector is inserted into the fiber channel (each plate can be coated with fiber 12) core).

5. The remaining fiber is evenly laid in the fiber fusion splice tray, and the surrounding fiber is aligned with the nylon cable tie. The use of the splice tray is usually from bottom to top. After all the optical fibers are connected, the cover plate is covered on the uppermost layer of the splice tray and fixed. Use the ground wire as required.

6. Select the cable ring (O-ring) with the outer diameter of the micro tube or cable to penetrate the cable and adjust it to the corresponding cable at the inlet of the connector housing. The micro tube or cable in the center of the two cables is entangled. Sealing tape, together with the unused joint box into the cable mouth with a plug (the outer concave part of the plug is wrapped with sealing tape), and then put a sealing strip on the sealing groove at the two ends of the joint box shell, together in two The concave end of the cable connector housing is filled with a sealant, and the two joint box hangers are aligned with the left and right screw holes, and the outer casing is closed and the stainless steel bolts are tightened. The force applied to the bolt should be symmetrical and uniform until it is fully tightened.

7. Add a water blocking joint at the outer part of the joint box 3-5cm, and the knob of the water blocking joint is away from the joint box.

8. According to the laying request, fix the hanger and lay it by yourself.

Fiber Optic Termination Box Provides A Simple Management

Fiber optic termination box is generally box-shaped cable management products for protecting and distributing fiber links. It is compact and compact for FTTX cabling, including fiber optic cabling and cable management. The fiber optic termination box can be viewed as an optical fiber patch panel and ODF mini size. Typically, the fiber terminal box includes a fiber optic patch panel and a fiber junction box. The fiber board has a larger size and a smaller fiber junction box. However, too many fiber terminal boxes and cable management equipment is difficult to calculate its type. Many manufacturers will be based on their own design and manufacture of fiber terminal box, and fiber terminal box to provide a different name and model.

Fiber patch is typically 19 inches in size. They may be wall-mounted or rack-mounted, and they have trays in the fiber box to maintain and protect the fiber links. They can be pre-installed with a variety of fiber optic adapter, which is connected through the fiber optic device to connect the external device interface. The rack-mounted fiber-optic terminal box splits, distributes, terminates, repairs, stores, and manages the fiber in a unit. They support cross-connect and interconnect architectures and provide an interface between external cables and transmission equipment. The wall-mounted fiber optic termination box is designed for pre-wired cables, field-mounted connectors, or field-mounted braids. They are ideal for building entry terminals, telecom cabinets, main cross-connect, computer rooms and other controlled environments.

The fiber optic termination box can be rack mounted to the rack mount unit. Including 19-inch and 21-inch installations. Unlike the wall mounting type, the number of front and rear doors, rails and inner box can be fixed depending on capacity. And provides an interface between an external plant cable and a transmission device. Separation, splicing and termination can be done indoors and outdoors in a small area of the fiber distribution box. The fiber junction box is the best solution for network deployment in client applications. It can be assigned cables after the dispenser is installed, and the fiber optic cable can be pulled out by direct or cross-connect. The standard plug-and-play separator is specifically accepted in the box.

The fiber optic termination box provides a simple and clear way to manage the incoming and outgoing cables. The fiber bending radius is firmly protected in the box, and the signal integrity is ensured. The fiber terminal box is a compact device that can be easily installed, maintained and subsequently terminated. The number of fibers can be varied to meet the project requirements. When installed in different occasions, the fiber terminal box is also designed to have a different structure.

GreenTel provides various shapes Fiber Closure. All the closures we offered are with a great sealing performance. High quality plastic material also ensures the durability whether the closure is in air, in pipeline or buried underground.

The Method Of Determining The Number Of Cable Cores Introduced

The number of glass fibers contained in each cable is the number of cores. The following Green Telecom will introduce you to the method of determining the number of cores.Green Telecom offers the most comprehensive selection of fiber distribution box, Fiber Optic Splice Closure , DOME Fiber Closure , fiber optic termination box products to customers in different industries.

According to the IBDN standard, it is generally recommended that each communication room has 12 cores and the building has 24 cores.
First know the number of routing points in the layer, calculate the number of switches, whether the connections between the switches are stacked or not.
If the core switch is dual-system hot standby redundancy, the 6-core is sufficient (2 cores each use 2 cores and 2 cores redundant).
If you do not stack a switch to 4 cores, how many switches multiply by 4 plus 4 core redundancy, you can.

Experience: Each floor wiring closet (horizontal wiring cabinet), set up a fiber.
Generally six cores: two cores, two cores, two cores; eight cores.

Redundancy: As long as it is more than used, the extra is called redundancy;
Master and standby: one used, the other one is the same as the standby;
Hot backup: both in working state
Cold backup: The backup device is in standby state

The minimum configuration of the specification is 2 cores per 48 points. Of course, 48 points can be selected as 4 cores, because the 2 cores are the smallest unit of the optical cable, and it is more appropriate to reserve 2 cores as the backup.

The above is the introduction of the method for determining the number of optical cores. You can find out. Backups can be selected for people, so the number of fiber cores that come out is quite different. According to the specification, only one minimum selection and one backup core number can be guaranteed.

For more information, please visit our official website :

Leather Cable Installation And Deployment Technical Requirements

Green Telecom offers the most comprehensive selection of fiber distribution box, Fiber Optic Splice Closure , fiber optic termination box products to customers in different industries.
1. The leather cable should be placed straight, without twisting and crossing, and should not be damaged by external force and operation. The power cord, the incoming leather cable, and the cables of other weak current systems in the building should be separated and deployed. If it cannot be met, the corresponding isolation protection measures must be taken. Wire-reinforced leather cables should be grounded in the transfer box.
2. For important users or users with special requirements, consider providing protection and choosing different protection methods according to different situations.
3. The laying of leather cable should fully consider and strictly meet the requirements of “fire prevention, anti-rat and anti-extrusion”.
4. There should be a uniform mark on both ends of the leather cable, and the position on the two ends should be indicated on the mark. Label writing should be clear, correct and correct. Labels should be made of materials that are not suitable for damage.
5. The corner of the cable should be even and smooth. The average radius of the G.652 fiber should be greater than 30mm. The radius of curvature of the G.657 fiber should be greater than (A type) 10mm, (B type) 7.5mm. , (C type) 5mm.
6. When the leather cable is laid, it is usually artificially pulled, and the traction should not exceed 80% of the maximum allowable tension of the cable. The maximum instantaneous traction must not exceed 100N of the maximum allowable tension of the cable. The main traction should be added to the cable reinforcement. After the leather cable is laid, the tension should be released to maintain the natural bending state.
7. The leather cable should be carried by the cable cable, and the cable tray should be used when laying the cable, so that the cable cable can be rotated automatically to prevent the cable from being entangled.
8. During the laying process of the cable, the tensile strength and bending radius of the fiber should be strictly observed to avoid the fiber being entangled, twisted, damaged and stepped on.
The minimum bending radius of the sheathed cable shall meet the following requirements:
(1) The bending radius of the sheath cable should not be less than 40mm during the laying process;
(2) The bending radius of the fixed sheath cable shall not be less than 15mm.
9. Building shaft and bridge requirements:
(1) The telecommunications shaft should be consistently traversed through all floors, and its internal broadband should not be less than 600mm. The operating distance before the wiring box installed in the cable shaft should not be less than 0.6m.
(2) Grounding devices should be reserved in the telecommunications shaft.
(3) The installation of the trunking in the shaft should be greater than 50% of the total cable utilization.
(4) The vertical part of the vertical cable in the vertical axis should be bundled and fixed within 1.5 meters to prevent the damage caused by the falling force on the core.
10. Horizontal piping requirements (weak well to user):
(1) The diameter of the pre-embedded pipe should be φ20 mm – φ25mm. The length of the straight pipe in the building should be controlled within 30 meters. When the length exceeds 30 meters, the road box should be added. When the concealed pipe must be bent and laid, its routing length should be ≤ 15 meters, and there must be no S bend in the segment. When the continuous bending is more than 2 times, a wire box should be added. All turns are made with a bender and are the standard turning radius. Do not use three links and so on.
(2) The bending radius of the dark pipe should be 10 times larger than the pipe diameter. When the outer diameter is less than 25 mm, the bending radius should be greater than 6 times the pipe diameter, and the bending angle should not be less than 90 degrees. The bend radius of the concealed pipe shall not be less than 6-10 times the outer diameter of the pipe.
11. When the leather cable is laid, the reserved length at both ends of the leather cable should meet the following requirements: one end of the floor light distribution box is reserved for about 1m; the end of the user’s leather cable terminal box is reserved for about 0.5m.
12. After the installation of the household cable, the light source and optical power meter should be tested. The light attenuation value of the cable of the household cable at 1310nm and 1490nm should be less than 1.5dB, such as the cable of the household cable. If the light attenuation value is greater than 1.5dB, it should be repaired. If the repair has not been improved, it is necessary to re-create the fiber optic mechanical connection plug or re-lay the cable.
13. If the outdoor leather cable span exceeds 40 meters, the soft suspension method should be considered.
14. Place the dark (light) tubular leather cable first. When laying the dark (clear) tube, the connection should be made by using a hose or installing a pass box. The straight angle should be more than 10 meters. Install the pass box.
15. The leather cable laid in the shaft is laid out in principle from top to bottom. The high-rise buildings or long-distance installations need to be bundled every 1.5 meters to reduce the long-term self-weight of the cable. The damage that comes.
16. The power cord, the incoming leather cable and the cables of other weak current systems in the building shall be laid off separately. The minimum clearance between the cables shall be in accordance with the design and the requirements of the following table.

For more information, please visit our official website :

Fiber Optic Splice Closure Internal Structure

There are many types of Fiber Optic Splice Closure in the market, and the internal structure is basically unchanged.
The internal structure includes the following sections:
1. Support frame: It is the main body of internal components.
2. Optical cable fixing device: used for fixing the optical cable and the base and fixing the optical cable reinforcing component. The first is the fixing of the cable reinforcement core inside; the second is the fixing of the cable and the support frame; the third is that the cable and the connector box are sealed and fixed by the heat shrinkable jacket.
3. Fiber-optic placement device: The fiber-optic connector and the remaining fiber can be stored in sequence. The length of the remaining fiber should be no less than 1 meter, and the remaining fiber-optic disk should be no less than 35 mm. The storage tray can be four layers, the capacity is large, and the storage tray can be adjusted according to the number of cores connected by the optical cable.
4, fiber optic connector protection: the heat-shrinkable protective sleeve placed on the core holder in the receiving tray can also be used to fix the silicone.
5. Sealing the optical cable and the joint box: sand the joint between the joint box and the optical cable with the abrasive cloth on the cable and the base cable, wipe the sanding place with the cleaning agent, paste the aluminum foil, and place the heat shrinkable tube in the joint box. At the entrance of the cable, the burner is slowly heated according to the middle and rear ends, so that the entire heat-shrinkable tube can be completely contracted.
Click here for more information on Fiber Closure .

A Brief Overview Of Fiber Optic Splice Closure

The Fiber Optic Splice Closure, also called the fiber optic cable connector box and the barrel, is the place where the end of the optical cable is connected, and then accesses the optical switch through the optical fiber jumper to prevent the aging of materials caused by heat, cold, light, oxygen and microorganisms in nature. And with excellent mechanical strength, the sturdy cable connector housing and main structural components can withstand * harsh environmental changes, while at the same time playing a flame retardant, waterproof, shock, impact, cable tension, distortion and other protection.
According to the structure, the connection box can be divided into two types of optical cable connection boxes: a hat type (vertical type) and a horizontal type (have type). Moreover, when there are certain technical requirements for the design of the optical cable connection box, what technical requirements are there?
The cable connection box can be installed in the overhead, buried, wall and pipe wall of the well; the box seal and the cable inlet and outlet holes are sealed quickly and easily, and can be repeatedly opened and used; the connection box has a good fiber routing design to ensure the radius of curvature of the fiber. The fiber storage space is large; the welding splice tray is selected, suitable for cable or integrated bundled fiber, and can be equipped in any capacity within * capacity; the splice disk has large storage space, the flip angle is greater than 90°, and the maintenance and expansion are convenient; the internal cable is fixed structure. The cable is fixed safer and secure; the grounding device and the valve can be installed.

In order to improve the withstand voltage performance of the connection box, it is necessary to use a better insulating material to increase the surface finish and reduce the curvature between the insulator and the pole and pole and between the pole and the ground.

This condition can be increased by at least 100% or more in the case where all other parameters are the same. The connection box is an important part of the optical cable communication line. The main function is to complete the connection of the optical fiber, and to ensure the grounding function of the connection box, the internal grounding device and the grounding part of the optical cable should be in electrical communication, and the metal components of the connecting box and the grounding device and the optical cable reinforcing core are insulated from each other. To prevent the effects of helium from the joint box from the environment.
Because the application environment of the joint box is basically outdoors, their application environment may be buried, overhead or pipeline. Therefore, high requirements are placed on the design of the fixing and grounding device of the connection box and the insulating material used.

Click for more information on Fiber Closure .

Possible Dangers Of Fiber Optic Splice Closure

Green Telecom is a company specializing in the production of communication equipment, including Fiber Optic Splice Closure, Fiber Closure, Inline Closure , etc.

Damage caused by the cable discussion box:

The discussion of optical fiber strengthens the hot melt temperature of the materials and supplements received by the cherished pieces at 120 ° C, the thermal softening temperature is 90 ° C, and can be temporarily used at -40 ° C ~ +60 ° C temperature. Its primary function is to realize the continuation of the fiber optic cable, and to discuss the grounding effect of the fiber optic cable. The internal grounding assembly and the grounding part of the optical cable should be in electrical communication, and the metal components and grounding assembly of the optical cable discussion box and the optical cable reinforcing core are included. Between each other, in order to avoid the impact of the situation on the cable discussion box. In the case of indecent, because the use of optical cable discussion boxes is based on the outside, their use is mostly buried, crowded or pipelined. In order to guard against the impact of lightning strikes or other identities, it is required that the «voltage withstand strength» of the cable discussion box must meet the requirement of 15 volts DC voltage in the scale, no breakdown within 1 minute, and no arcing sign. Therefore, high requirements are placed on the planning and application of the flow and grounding assembly of the optical cable discussion box. The quality of the lightning protection facilities indirectly determines the probability that the cable junction box will be hindered. After the construction is laid, the test is for the inspection and release process, and it is used as a check before the continuation; the test in the continuation is to check whether the low consumption is reached; after the continuation, the test of the unit cable segment is completed. It is in the process of checking whether it is the preparation of the total attenuation of the transmission and the corresponding requirements of the total baseband, as a preparation for the total adjustment of the adjacent optical transceiver. Single mode fiber is characterized by a dispersion coefficient to characterize the dispersion. In addition, the new architecture introduces the principle of multi-fiber business terminals (MST) and meeting splices, and the cable discussion box further reduces initial support costs. Finally, when the technicians are protecting, repairing, and opening business, the two basic areas that are being collected by the FTTP—the interface between the feeder segment and the distribution equipment—the interface between the equipment and the outdoor fiber optic cable of the outdoor equipment— Using the adjacent device will make the access easy and low.

Cable installation box installation requirements:

1, all kinds of socket panels should have a logo. The color, graphics, pen and ink performance of the terminal equipment business examples.

2. The fiber adjacent to the device and the adapter bottom box of the fiber optic cable in the area should have sufficient space and should meet the planning requirements.

3. The location of the suspect module, the multi-user cable terminal box, the connection point wiring module, the installation pattern and the height should meet the requirements of the plan.

4. When the installation is in the local board or in the air, the flow should be discussed in the box, the suspect panel accepts the erection and degree, the junction box cover can be opened, and should have waterproof, dustproof and anti-pressure effects, the junction box cover The surface should be flush with the air.

5. When the cable connector box bottom box is installed with the suspect module and the power socket at the same time, the spacing and the receiving protective facilities should meet the plan requirements.

6. The flow method of the optical cable discussion box base should be determined according to the detailed premise of the on-site construction. It can be installed by shrinking screws, nails and other essentials. The flow requirements of the bottom box of the doubt module are determined by the premise of the construction site.

7. Install the fiber optic cable discussion box on the wall, and its position should be more than 300 mm in the air. When the local board is being accepted in the air in the room. The cable terminal box should be 300 mm outside the local board.

8. The flow screw needs to be tightened, and no loose signs should occur. The installation of the base, the suspect module and the panel should be firm and stable, and there should be no signs of looseness. The panel should be connected to a certain extent, so that the panel is neat and tidy.

Click here for more information on Fiber Optic Splice Closure .

Introduction Of Cap Fiber Optic Splice Closure

Green Telecom is a company specializing in the production of communication equipment such as Fiber Optic Splice Closure .

1. The fiber optic cable connection box can be used for both the main trunk cable and the divergent cable to be spliced, and some of the trunk cables are spliced ​​to the pigtail or tail cable, and connected to the optical switching device through the fiber jumper. The welding unit, the wiring unit, the part of the material of the network box casing, the optical cable of the cable connection box to the network box, and the entire operation process can be omitted.
2. The fiber fusion splicing unit increases or decreases the fiber storage tray to save time and time. The flip angle of the fiber condensing tray reaches 90°C or above, which is convenient for future expansion and maintenance.
3. The fiber optic distribution unit can be installed with fixed modules of FC, SC, ST, and LC adapters. It is very convenient to install and can be configured according to user needs. The dimensions and mounting holes of each module are the same.
4. Innovative structural design, easy and reliable installation, the whole set of plastic parts adopts scientifically formulated high-strength PC engineering plastics, and the injection molding can be used for a long time in the natural environment of -40 °C ~ +65 °C.
5. Patented product – the elastomeric sealing member can be repeatedly opened and reused repeatedly to maintain good sealing performance.
6. Multi-function optical cable connection box, which can be installed by hanging wall or pole. Realize FTTH access for fiber network construction to reduce costs and improve communication quality

For more information on Fiber Closure , click here

Linear Fiber Optic Splice Closure Details

Green Telecom is a company specializing in the production of communication equipment such as Fiber Optic Splice Closure .

The linear joint box designed for the continuous and sealed protection of the optical cable in the communication external network can be applied to various occasions such as overhead, pipeline and direct burial. The linear connector box is equipped with cable entry accessories and a large number of fiber splice trays with a maximum capacity of 96 cores (band 192 cores).

The box body is sealed with adhesive strips, which can be repeatedly opened many times without replacing the sealing material, meeting the three basic elements of the FTTH network. Its main features are as follows:

1. Mechanical gel sealing, linear design, suitable for various applications such as overhead, pipeline, direct burial.

2. There are two optical cable inlets at each end, and the cable accessories are available for selection.

3, suitable for all types of fiber optic cable. For example, a stranded cable, a center bundle tube, or a skeleton cable.

4, generally used for 12-72 core cable connection, the limit capacity can be extended to 192 cores.

5, the cable entrance is sealed with gel strip, no need to heat, no need to replace the sealing material.

6. Since the entire box is sealed with a strip of glue, no special tools are required to open or close, and it is not necessary to repeatedly open the kit.

7. It adopts convenient buckle device, and its snap-on design facilitates the installation and repeated opening of the joint box. Reduces the operator’s troubles of screwing. The effect of the factor on the sealing performance is further reduced.

8, flip-type welding plate, easy to find the light path and cut. And there are multiple styles of flip-type splice trays to choose from.

9. According to the needs, the flip-type welding plate can be placed on the beam splitter.

10. Valves and grounding wires can be installed to meet the requirements of trunk network.

Click here for more Fiber Closure .

Detailed Analysis Of DOME Fiber Closure

Green Telecom’s products are mainly related to communication. The main products are DOME Fiber Closure , Fiber Optic Splice Closure, Inline Closure, Fiber Closure and the like.

The whole set of plastic parts is made of scientifically formulated high-strength PC engineering plastics, which can be used for a long time in the natural environment of -40 ° C ~ +65 ° C.
Size: vertical (height × bottom diameter) 415 * 190mm
The cable access holes are: 2 holes, 4 holes, 6 holes, 8 holes, 12 holes.
Installable cable diameter: Φ5mm~Φ20mm
Capacity: minimum capacity 4 core maximum capacity 144 core
Standard accessories: splice tray, cable fixture, seals, wall fixtures.
Optional accessories: heat shrinkable tube, nylon cable tie, insulating tape, special wrench, etc.
Installation method: wall-mounted and pole-mounted.
Siamese seals: High-quality imported elastomer rubber sealing material is used, and the mold is molded once, so that the joint surface of the product is seamless, the sealing performance is guaranteed, and the repeated opening, repeated use and convenient construction can be achieved.
End blocking piece: used to block the excess hole of the cable connecting box, maintain good air tightness and water tightness inside the box, and effectively protect the fiber and connector in the box. The device is not easy to fall off, detachable and easy to install.
Grounding lead-out device: The metal component in the cable in the box is led out to ground for protection.
Cable fixing device: used for fixing the optical cable to the base and fixing the optical cable reinforcing component. The first is the fixing of the cable reinforcement core inside; the second is the fixing of the cable and the support frame; the third is that the cable and the connector box are sealed and fixed by the heat shrinkable jacket.
Splice tray: used for welding, branching and disc storage of optical fibers; discs can be stacked, flexible in configuration and easy to install.
Scope of use: 1 Widely used in communication, network systems, CATV cable TV, optical cable network systems, etc. Straight-through and branch connections for overhead, pipeline, direct burial, etc., can be buried, overhead, pipelines, human wells Hanging wall use; 2 connection in the terminal room of the structural cable.
★ Remarks: The fiber optic cable connection box is generally suitable for indoor or non-open outdoor use. It is not suitable for outdoor use. If it is used, protective measures should be taken. The above dimensions are regular sizes, and unconventional sizes can be customized according to customer requirements.
Cap Cable Connection Box – Product Categories
Click here to learn more about Fiber Optic Splice Closure .