Terminal box Fiber optic box 12-core terminal box 24-core terminal box

Introduction: The optical cable terminal box series products are auxiliary equipment for terminal wiring in optical fiber transmission communication networks. They are suitable for direct and branch continuation of indoor optical cables
, and protect optical fiber joints
Environmental requirements
. The optical cable terminal box is not suitable for use in the open air. If it is to be used, protective measures should be taken.
. Working temperature ℃～+℃
. Storage temperature 1℃～+℃
For humidity not greater than % (at ℃)
. Air pressure～
Functional requirements< br/> .It has the functions of introducing optical cables, extracting wiring pigtails, fixing and protecting the performance of optical cables, wiring pigtails and optical fibers from being damaged.
.Has the function of protecting the optical cable terminal from environmental influences.
.It has the function of insulating the metal components of the optical cable from the shell of the optical cable terminal box and easily leading out the grounding.
. Provides space for the placement of optical cable terminals and remaining optical fiber storage, and makes installation and operation convenient.
.The box body can be fixed with sufficient impact resistance and has corresponding installation functions for different use occasions.
.If necessary, it should have the function of diverging optical cables and functional requirements.
Structure
The optical cable terminal box is composed of outer shell, internal components and optical fiber connector protection parts.
.Shell
The shell should be easy to open and easy to install. The shell should have a lead-out device for grounding the high-voltage protective grounding of the metal components of the optical cable.
. Internal components.
The components should include the following parts
. The main body of the internal structure of the support frame is used to support the internal structure
. The fiber collection tray is used to store optical fiber connectors (and their protective parts) in an orderly manner. And the remaining optical fiber, the length of the remaining optical fiber should not be less than the radius of curvature of the remaining optical fiber coil should not be less than. It also provides easy-to-identify fiber number marks and convenient operation space for reconnection
. The fixing device is used for fixing the optical cable jacket, fixing the optical cable strengthening member and fixing the wiring pigtail.
. Optical fiber connector protection parts
The protection of fiber connectors can use heat-shrinkable protective tubes, protective clips, etc.
Material properties
The materials used for the parts of the optical cable terminal box should have anti-corrosion properties. If there is no anti-corrosion performance, it should be treated with anti-corrosion treatment. Its physical and chemical properties must be stable and the various materials must be compatible with each other and with the optical cable sheath and wiring pigtail sheath. To prevent corrosion and other electrical damage, these materials must also be compatible with materials commonly used in other equipment.
. If the optical cable terminal box is made of engineering plastics, its combustion performance should meet the requirements of the intermediate test, and the test flame application duration is.
. The hot melting temperature of the materials and fillers used in the optical fiber connector reinforced protection parts should be no less than ℃, the thermal softening temperature should be no less than ℃, and they should be able to be used at a temperature of 1℃~+℃.
. All materials should be non-toxic, non-corrosive and have no side effects on human health and other equipment.
The appearance of the optical cable terminal box should be complete in shape, without burrs, bubbles, cracks, holes, warping, impurities and other defects. All background colors should be even and continuous. The appearance is beautiful, the construction is convenient, the additional attenuation is small, and the structure is reasonable. The optical cable reinforcement core can be fixed in the terminal box. It has the function of drawing out the ground wire connected to the metal outer sheath of the optical cable. It is suitable for both ribbon optical cables and ordinary optical cables. Uniquely designed, there are terminal boxes on inch racks and wall-mounted terminal boxes.
Optical performance
The remaining optical fiber in the optical cable terminal box is coiled in the fiber collecting tray. After the installation operation of the optical cable terminal box, the optical fiber and the optical fiber connector should have additional attenuation.
After the mechanical properties are tested through the following tests, the body and parts of the optical cable terminal box should change. If necessary, optical fiber light inspection should be carried out.
． The stretched optical cable terminal box should be able to withstand no less than 300 axial tensile force between the terminal box and an optical cable, and the axial tensile force between the stretched optical cable terminal box and any wiring pigtail should be no less than 1000 axial tensile force.
All sides of the flattened optical cable terminal box should be able to withstand a vertical static pressure of not less than 50,000.
The twisted optical cable terminal box should be able to withstand the twisting angle
Electrical performance
． Insulation resistance The insulation resistance between the metal components of the optical cable joint box and the metal reinforcement core of the optical cable, between the metal components of the optical cable, and between the metal components of the optical cable and the ground should not be less than * [test voltage is].
Withstanding voltage strength, there will be no breakdown or arcing between the optical cable terminal box and the optical cable metal reinforcing core, between the optical cable metal components, and between the optical cable metal components and the ground under the action of direct current.
Optical performance
The remaining optical fiber in the optical cable terminal box is coiled in the fiber splice tray. There should be no additional attenuation of the optical fiber and optical fiber connector after the installation operation of the optical cable terminal box.
Specifications and models
In and out
Out
Out
Out[]
Function
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The function of the connector box is to connect the two sections Fiber optic cables are connected. The terminal box is where the end of the optical cable is connected, and then connected to the optical switch through optical jumpers. Therefore, terminal boxes are usually installed on inch racks and can accommodate a relatively large number of fiber optic cable ends. The function of the connector box is to connect two sections of optical cables. The terminal box connects the optical cable to the pigtail for protection. In actual work, the terminal box can be used as an indoor connector box, but the connector box is rarely used as a terminal box. The purpose of the junction box is different. The junction box can be divided into an optical cable junction box and a cable junction box. Their functions are all used for user front-end wiring. use. , The splice box generally refers to the optical cable splice box, also called the optical cable connector box. In some places, especially the radio and television systems, it is also called the optical splice package. Its function is to protect the optical cable connector from damage from the outside world. The distribution frame is also divided into optical cable distribution frame and cable distribution frame. It also functions like a handover box, but it is used in the operator's computer room.
Application
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As the carrier of information transmission, optical fiber cable terminal box, using optical fiber hardware as the information transmission medium, has become an important pillar of modern communications. Optical cable terminal box technology has gone through decades from the theoretical proposal to the technical implementation in the engineering field to the realization of today's high-speed optical fiber communication. The birth and in-depth development of optical fiber communication technology is an important reform in the history of information communication.
Optical cable terminal boxes are widely used in local and rural telephone network systems, data and image transmission systems, and cable TV series. They are used for straight-through connection and branch connection of indoor optical cables, and serve as pigtail storage and joint protection. It is made of cold-rolled steel plate with electrostatic spraying. It has a reasonable design structure and beautiful appearance. It can fix the optical cable reinforcement core to the terminal.
Installation requirements
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The installation location, installation method and height of information modules, multi-user optical cable terminal boxes, and assembly point wiring modules should comply with the design requirements.
When installed in the raised floor or on the ground, it should be fixed in the junction box. The information panel should be upright or horizontal. The junction box cover can be opened, and should be waterproof, dustproof, and pressure-resistant. The wiring The lid surface of the box should be flush with the ground. ?
When installing information modules and power sockets in the bottom box of the optical cable terminal box at the same time, the spacing and protective measures taken should meet the design requirements. ?
The fixing method of the base of the optical cable terminal box should be determined according to the specific conditions of the on-site construction. Expansion screws, nails and other methods can be used for installation. The fixing method of the surface-mounted bottom box of the information module is determined according to the conditions of the construction site. ?
The fixing screws need to be tightened and should not be loose. The installation of the base, information module and panel should be firm and stable without looseness, and the panel should be kept on a horizontal plane to make it beautiful and neat. ?
The fiber optic cable terminal box installed on the wall should be positioned about above the ground. When a raised floor is used on the floor of the room. Fiber optic cable termination boxes should be clear of the surface of the raised floor. ?
Various socket panels should be marked with colors, graphics, and text to indicate the service type of the terminal equipment connected. ?
The optical fiber connecting devices and adapter installation back boxes for terminating optical cables in the work area should have sufficient space and should meet the design requirements