Network cable connector and trunking

Information socket

The appearance of the information socket is similar to the power socket, and it is also fixed to the wall like the power socket.

Function: Provide a network interface for the computer.

Information socket configuration

Basis: According to the actual situation, determine the number and distribution of required information outlets. The number and location of information outlets will determine the design and planning of the entire network.

Notes on configuring the information socket:

(1) Calculate the wiring area of ​​each floor according to the floor plan.

(2) To estimate the number of information sockets, two types of floor plans should generally be designed for users to choose.

â‘  Basic integrated wiring system, generally one information socket per room or every 10m2.

â‘¡ Enhanced and comprehensive wiring system, generally two information sockets per room or every 10m2.

(3) Determine the type of information outlet.

Type of information outlet

Information socket composition: information module, panel and base. The different panels used by the information outlet determine the environment to which the information outlet applies, and the communication standard followed by the information module determines the scope of application of the information outlet.

1. According to the classification of the panel used by the information socket (three types)

(1) Wall type. (2) Desktop type. (3) Above ground type.

2. According to the classification of the information module used by the information socket

(1) RJ-45 information module. (2) Optical fiber socket module. (3) Conversion socket module.

Network cable connector

RJ-45 connector

1. Classification of twisted pair jumpers

1) Straight-through cable: The line sequence in the RJ-45 crystal heads on both ends is exactly the same jumper, which is suitable for the connection between the computer and the hub device.

There are two standards for line sequence arrangement, namely TIA / EIA-568-A standard and TIA / EIA-568-B standard.

2) Crossover: TIA / EIA-568-A standard at one end and T568B standard at the other end

Line sequence description

BNC coaxial cable connector

Function: It is used to construct the coaxial cable (thin cable) Ethernet network of the bus structure, through which the network connection with 50Ω thin cable as the transmission medium can be realized.

According to the role in the network, BNC coaxial cable connectors mainly have the following types:

● BNC connector plugs: installed at both ends of the thin cable segment.

● BNC T-type connector: It looks like the capital letter "T" in English and has three ports.

● BNC barrel connector: There are two ports for connecting the coaxial cable with plug that has been made.

The optical fiber connector

Optical fiber connectors are passive components used to stabilize but not permanently connect two or more optical fibers. They are indispensable devices in optical fiber communication systems.

1. Basic composition of optical fiber connector

At present, most optical fiber connectors are composed of three parts, namely two mating plugs and a coupling tube. Two plugs fit into the ends of two optical fibers; the coupling tube plays the role of aligning the sleeve. In addition, the coupling tube is often equipped with metal or non-metal flanges to facilitate the installation and fixation of the connector.

2. Alignment method of optical fiber connector

There are two ways to align fiber connectors: high-precision component alignment and active alignment.

3. Classification of fiber optic connectors

Patch panel

The role of patch panel: In order to facilitate management and save network resources, patch panels must be used in the integrated wiring system.

Distribution frame classification:

1. Sort by location

Divided into: main distribution frame and middle distribution frame. The main distribution frame is used for wiring of buildings and building groups, and the middle distribution frame is used for wiring of floors.

2. According to the type of cable connected

The distribution frame is mainly a collection of information modules. The type of information module must correspond to the type of connecting cable.

3. Sort by number of ports

The ports of the patch panel are mainly in the form of 24 ports and 48 ports, and should be selected according to the number of terminals to be managed.

Twisted pair distribution frame

Function: Used to terminate twisted pair cable and provide an interface for the connection of twisted pair with other equipment.

Optical fiber distribution frame

Function: An important supporting equipment in the optical transmission system, which is mainly used for optical fiber fusion splicing of optical cable terminals, installation of optical connectors, deployment of optical paths, storage of excess pigtails, and protection of optical cables. It plays an important role in the safe operation and flexible use of optical fiber communication networks.

1. Function of optical fiber distribution frame

Has 4 basic functions: fixed function, fusion function, deployment function and storage function.

2. Structure of optical fiber distribution frame

According to the different structure of optical fiber distribution frame, it can be divided into wall-mounted and rack-mounted.

Specification and variety of wire groove

There are the following types of wire channels used in the integrated wiring system:

Metal tanks and accessories; metal pipes and accessories; PVC plastic tanks and accessories; PVC plastic tubes and accessories.

Metal slot

Composition: slot bottom, slot cover. The general length of each grain is 2m. When the groove is connected with the groove, use the corresponding size of iron plate and screw to fix.

In the integrated wiring system, the specifications of the metal grooves generally used are various types such as 50mm × 100mm, 100mm × 100mm, 100mm × 200mm, 100mm × 300mm, 200mm × 400mm.

Plastic tank

The shape of the plastic tank is similar to that of the metal tank, but its varieties and specifications are more. From the model point of view, there are PVC-20 series, PVC-25 series, PVC-25F series, PVC-30 series, PVC-40 series, PVC- 40Q series, etc. In terms of specifications, there are 20mm × 12mm, 25mm × 12.5mm, 25mm × 25mm, 30mm × 15mm, 40mm × 20mm, etc.

The accessories that are matched with the PVC slot are: male angle, female angle, straight corner, flat tee, left tee, right tee, connector, terminal head, junction box (concealed box, open box), etc.

Metal tube

Function: used for branch structure or buried lines.

Specifications: There are many. According to the different outer diameter (in mm), the commonly used metal pipes in construction include D16, D20, D25, D32, D40, D50, D63, D25, D110 and other specifications.

Plastic pipes are divided into two categories: PE flame retardant pipes and PVC flame retardant pipes.

PE flame retardant catheter is a plastic semi-rigid catheter with 4 specifications of D16, D20, D25 and D32 according to the outer diameter. The appearance is white, with the advantages of high strength, corrosion resistance, good flexibility, smooth inner wall, etc. It can be used for both light and concealed threading. It also uses a tray as a unit, and each tray weighs 25 kg.

PVC flame-retardant catheters are made of polyvinyl chloride resin as the main raw material, adding an appropriate amount of additives, and extruded into rigid catheters by processing equipment. Small-diameter PVC flame-retardant catheters can be bent at room temperature. It is convenient for users to use, according to the outer diameter: D16, D20, D25, D32, D40, D45, D63, D25, D110 and other specifications.

The accessories that are matched with the installation of PVC pipes are: joints, spiral rings, elbows, elbow springs; one-way connection, two-way connection, three-way connection, four-way connection, open pipe clamp, special pipe cutter, PVC Coarse mixture, etc.

Pipeline support equipment

Function: Used to fix the pipeline and prevent the pipeline from moving when installing the cable.

The hardware used to support the pipeline is mainly the following: pipeline hook; hanger; single-piece pipeline hook.

1) Pipe hook

It is a pear-shaped bracket, usually fixed to one end of the screw with a nut and a locking washer, and the other end of the screw is fixed to the building structure with a suitable fixing tool. The concrete fastener can fix the screw on the building wall, and the beam clamp can fix the screw on the supporting beam in the building.

2) Hanger

It is usually designed as a horizontal support unit fixed on the ceiling of the building with two screws, and the screws are fixed on the building structure with clips or other types of fasteners. The hanger pipe is usually used to support multiple pipe paths.

3) Single piece pipe hook

It has a screw as part of the hook and is fixed to the building structure with a clip or a special hanger. This kind of pipe hook is used when the pipe is close to the building support unit.

Bridge

Function: Mainly used as a support for cables.

1. Types of bridge

Mainly divided into 4 types: trough bridge, ladder bridge, tray bridge and combined bridge.

The ladder bridge is an open structure. The advantage is that it is very convenient to expand, modify and maintain, but the ladder bridge is not beautiful, and the dustproof effect is also poor. It is suitable for the wiring environment with ceiling.

The tray bridge is the most widely used in all aspects. It can be used for both power cable laying and control cable laying. It also has the advantages of heat dissipation and good air permeability.

Bridge support

The bridges installed in commercial buildings must have sufficient supporting capacity, and these supporting structures must ensure that they can support all the copper and optical cables in the channel. The following supports are usually used to support the bridge: hanger; hanger bar; support frame.

Cable support hardware

In the integrated wiring project, because of the requirements of the ANSI / TIA / EIA-569-A standard, all communication cables installed above the open ceiling must be supported, so many cable support products in the wiring industry support communication cables , The most common cable support equipment includes: J-shaped hook; suspension ring; cable clamp; cable ties.

J hook

The J-hook refers to a cable supporting hardware shaped like the letter J, and its design allows the communication cable to be easily installed in the J-hook hardware. J-shaped hook is a prefabricated cable support device, which is connected to the wall or beam of the building, placed on the cable path at an interval of 1.2 ~ 1.5m, or placed on the designated support point.

Hanging wire ring

Suspended wire loops are cable support equipment with open loops at the ends. In the wiring project, the suspension wire ring is fixed to the wooden beam with screws, or fixed to the steel beam with clips. The suspension ring is very convenient for supporting a cable or a small cable group composed of 5 to 10 cables.

Cable clamp

Cable clamps are a common cable support element, and many manufacturers are producing them. The cable clamp is a small curved metal clamp, which can be directly fixed on the building beam or suspension line through the adsorption effect. In the integrated wiring project, the cable clamp is usually used to support a cable.

Cable ties

0.40mm Board To Board Connector

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