Technical advice
Technical design scheme of structured integrated wiring system
I. Overview
A. The wiring system will pass through all planes of 1, the second floor and the third floor. It mainly provides high-performance transmission routing for voice, data, image and other system signals.
As a comprehensive line platform, B should have the greatest compatibility and openness, meet the transmission needs and network structure of various communications and computers, and provide a standardized, high-bandwidth and low-cost network environment.
C the system should have an open modular structure, which can flexibly allocate resources, manage lines, change and expand.
D the system should provide a safe, orderly and easy-to-manage environment for equipment installation and connection, so as to quickly and simply install and operate the system.
E, system planning fully consider the current application, adhere to the principle of high starting point, moderately ahead. Provide sufficient transmission bandwidth for various high-performance applications and sufficient space for future system upgrades.
F adopt the most advanced international engineering standards and specifications for system design and planning, so as to make it a representative engineering model in the city.
G. Basic customer information
The floor area is about 16.5 x 9 meters, and the optical fiber has been sent to the floor. Network information score: 90; Voice information point: 18
Second, the system design
1, system selection
PANDUIT structured integrated wiring
Based on the above system target scale, the wiring materials with leading technology, mature and stable products and excellent application effect should be selected for system selection. In this design, we recommend the use of PANDUIT's building structure integrated wiring system.
PANDUIT American Pantech Company is a world-famous manufacturer of network wiring system, and is known as a professional wiring product. PANDUIT is a member of the World Industrial Standards Organization. It enjoys a high reputation in the global market for promoting the adoption of innovative products. Its second-generation wiring products are well-known in many countries including the United States, Japan and Europe for their high quality, and its wiring market share ranks in the top three.
The obvious advantages of PANDUIT wiring product -PAN-NET network wiring system are absolute modularity, no typing and convenient color code management. The system includes a single module for twisted pair, coaxial cable and optical cable, and these modules can be mixed and installed, which can maximize the density and flexibility of the system.
Cisco, a famous network manufacturer, designated PANDUIT as its only wiring product, and the choice of experts was outstanding. In addition, 3COM, Motorola and Lehman Brothers are also customers of PANDUIT.
1997 Fanda Company set up a representative office in Beijing. Thanks to the efforts of Shanghai representatives, distributors and system integrators, Fanda Company has made encouraging achievements in China. Fanda's domestic customers include: Patent Office of the People's Republic of China, Ministry of Education, Cisco Beijing Office, Shanghai General Motors, Bank of China Jiangsu Branch, Daqing Oilfield Oil Production Company, Kunming News Center, Anshan Securities, Changchun Securities, Huaxia Securities, Audio-visual Education Department of South China Normal University, Guangzhou Port Authority, etc.
The continuous leading and innovation of technology has provided guidance for the world industrial standards.
PANDUIT product guarantee:
20-year pan-network product warranty-including all pan-network products.
15 year network system warranty-an end-to-end high-performance cabling system to meet your needs.
2. System planning
2. 1 structure
Building wiring system
1) The building wiring of SCS structured wiring system is divided into five parts: workspace subsystem, horizontal subsystem, trunk subsystem and management/equipment subsystem.
2) Central star structure is adopted, which is divided into two levels: horizontal and system trunk wiring. As shown in the figure below:
3) Four pairs of UTP cables are led out from the machine room for horizontal wiring with an impedance of 100W, and the longest wiring distance is limited to 90m. The information socket of the workstation is connected by five 8-pin socket modules compatible with EIA and RJ45. At the distribution frame end, RJ45 terminal module is adopted, which can satisfy the parallel use of multiple systems (data, video, etc.). ). D8SA module jumper can be directly connected to network equipment, and the whole set consists of more than five kinds of wiring equipment.
4) Set up a management distribution frame in the equipment center to manage the connection of various application networks, and use special jumpers for RJ45 modules; For all kinds of communication equipment constituting the network, provide a unified 19 inch industrial standard equipment rack for equipment installation; Equipment connection also adopts standard RJ45 unified connection interface (optional).
5) Configuration table of information points in the building:
Three. System description and installation specification
The configuration and structure of the system can refer to the structural schematic diagram and system configuration table of the integrated wiring system.
1, workspace subsystem
Refers to the information socket, terminal equipment connecting line and other components in each application position; They are distributed in different locations in the building, and all adopt the international standard EIA/TIA568B(RJ45) socket interface, and are fixed on the wall or floor in various ways.
In this scheme, our design is to make all sockets support 155Mbps data communication (computer communication) applications, so we adopt all PANDUIT super-class CJ588 information sockets to meet data and video applications. The distribution of horizontal information points is obtained according to the analysis and statistics of building demand, and the specific distribution will be determined according to the actual application and decoration environment of each floor.
1. 1 material specification/performance
Each information point is equipped with an RJ45 8-pin socket, and each socket is separately wired by 4 pairs of unshielded cables. It can be used for network connection applications such as voice, data and images. These sockets have passed the testing and approval of UL independent laboratory in the United States.
The standard 8-pin connection socket used in the information point meets the ISO 8877 standard and the mechanical and electrical performance standards of EIA-TIA 568 Association. Relevant documents are:
Iso/iec11801general wiring standard
EIA-TIA568
In order to enhance the versatility of the interface, the standard socket module PANDUITCJ588 is selected in this scheme, which can support 100Mbps Ethernet and 622Mbps ATM applications after testing. It has good performance indexes such as NEXT, attenuation and network ACR value. The panel size is 86×86mm, and there are application signs and seat number labels on the panel, which is convenient for system management.
These sockets don't need any tools when connecting cables. Install cables according to the numbers marked on the back of sockets that are consistent with RJ45 socket contacts.
1.2 equipment composition
In the workspace, components related to wiring include:
Terminal module socket/panel
Multifunctional socket bottom box
Balancer and adapter
Workstation equipment connection
In SCS integrated wiring system, there should be at least two 86×86mm sockets where terminal equipment is installed. Used to install the power socket and network interface socket that must be configured when the workstation is running.
The information points for general office work are configured as follows:
A CJ588 socket (model CJ588). It is an 8-pin modular socket which can be used for data, image network and other applications.
A 220v 10/ 16 amp power socket; It's better to add a standby power outlet (UPS) to the computer workstation.
1.3 installation method of socket
CJ588 information socket module has the following installation methods according to different environments:
Put it in a socket box, which can be installed on the wall or embedded in the wall, or installed on the raised floor;
Installed on the office desktop;
Directly installed on the combined office furniture;
Installed on the PBM conductor post (if the cable comes down from the ceiling).
2. Horizontal subsystem
The system connects the information sockets distributed on the same horizontal floor to the management module in a star structure. Ultra-class 5 4-pair unshielded twisted pair (UTP) using PANDUIT; The information socket of each information socket is equipped with 1 4 pairs of horizontal cables.
2. 1 material specification/performance
2. 1. 1 Panduit Super Category 5 Cable
Each working information socket is connected with 4 pairs of UTP twisted pairs with 1 PVC flame retardant sheath. It can be used in voice, high-speed data, image network and other applications. Its technical performance is:
Belonging to five product series,
Comply with iso/iec/is11801d standard and EIA/TIA-568A standard.
Characteristic impedance: 100W 15W
Cable diameter: 5.2mm.
Single-core conductor adopts AWG24/0.5 1mm wire number.
According to the specification of PANDUIT structured integrated wiring system about wiring length and curvature:
The maximum distance between information point and distribution frame is 90 meters;
The bending radius of the cable is 8 times the diameter of the cable sheath.
2.2 Layout of horizontal cables and pipelines
Different from the laying method of high-voltage conduit, the conduit in structured wiring system not only has the characteristics of structure and flexibility, but also has higher requirements in sealing, shielding and storage capacity.
The system wiring is radial, and the cable quantity is large, so it is very important to calculate the capacity of trunking. According to the standard design method of trunking, the capacity of trunking should be determined according to the outer diameter of horizontal line.
Namely: sum of cable cross-sectional areas × 1.8.
The horizontal line subsystem completes the line connection function from the wiring closet to the work area. There are two pipeline modes:
2.2. 1 corridor cable channel
Cable channels must be made of metal or plastic. Cable channels should be calculated and installed according to the size of cables and the size of available space.
Copper core cables used for data transmission should avoid interference from major interference sources, especially power cables that generate major interference sources. These interferences have a great influence on high frequency, thus polluting nearby communication cables. Therefore, a basic preventive measure can be taken, that is, the use of cable channels should be stipulated for a long time:
"Weak current" cable channel (data, telephone, image)
"High current" cable channel (power supply)
If possible, these two passages should be made of metal and fixed to the ceiling. These metal channels constitute a precious grounding object, which can hold cables and fix them, thus guiding the external interference power to other places. According to the current safety standards, the metal objects in these channels should be connected to the ground wire.
Here are some possible trends:
When the bending direction of weak current cable channel is the same as that of power cable, the distance between them should be at least 30 cm. We suggest that one side of the corridor can be used for high voltage cables and the other side for weak current cables. Fluorescent lamps should be avoided within 0.3m of the cable channel.
This project adopts the scheme of light assembled trough cable tray with suspended ceiling. This method is suitable for large buildings and provides mechanical protection and support for horizontal cable systems. Assembled trough cable tray is a kind of closed metal trough frame, which is installed in the ceiling and leads from the weak current well to the compartments with information points. Then, the wires are introduced into the socket box of the office through iron pipes and guide grooves with different specifications in the wall.
Cable channel in the office
The "weak current" cable channel should extend as close as possible to the information point. When wiring in the office, the same regulations as the cable channel in the corridor are adopted. However, if the length parallel to the power cable is short, the separation distance can also be very close. Pay attention to the parallel distance and pipe curvature:
When it is less than 2.5m, the distance between them is at least 2.5cm..
When it is less than 10 meter, the distance between them is at least 4 cm.
If the data cable is installed in all-metal trunking and properly connected to the ground wire, the distance from the power cable can be 1cm, but the parallel length must be less than 10m.
When laying cables, we must pay attention to the minimum bending of cables, UTP is 8 times of the outer diameter, and optical cables are 10 times of the outer diameter. So as to predict the cable channel. At the same time, the cable must also meet some mechanical performance requirements to avoid the attenuation of its electrical performance.
2.3 Vertical Cable Laying and Piping
How to set up cable channels, especially pipes with vertical wiring, is one of the first problems to be considered in wiring installation. Because it directly affects horizontal and vertical wiring.
Norms and standards
The location of cable channels depends on the installation environment. In order to limit possible electromagnetic interference, cable channels, shafts and wiring closets should be as far away from elevators and generators as possible. Cable channels should also be connected to the multi-grid grounding system.
Strong current and protective cables may interfere with weak current cables of voice/data/image signals. Therefore, some necessary measures must be taken so that the channels of these different types of conductors can work normally:
The metal channels of different cables are at least 0.3m apart.
High voltage/low voltage cables are in the same cable trough. High and low voltage cables are separated by metal plates, and the distance between wires is 0.3m ..
Parallel cable ducts must comply with the above provisions. When cables cross, the crossing must be at right angles to reduce the loop influence.
3. Management Area Subsystem \ Equipment Subsystem
At the convergence point of each cable, the cables of each system are terminated by standard wire frame modules in different areas, so as to realize the intersection and interconnection between horizontal wiring, optical fiber trunk lines and equipment channels, so that communication lines can be conveniently located or moved to different working areas.
3. 1 Environmental requirements of management and equipment wiring room
The wiring closet should not be a "closet", but a real operation studio with the following characteristics:
Area: (Its scale depends on the size of the equipment installed here)
Power supply: at least 1KVA (depending on the installed equipment)
Low impedance grounding: less than 5 (recommended value)
ventilation system
hands-free phone
Connect to the shaft
Lighting at least 200 lux.
The door is at least 75 cm wide and has a lock.
Stay away from all sources of electromagnetic interference
The wiring room should be large enough to accommodate not only all the connecting equipment of the wiring system, but also the communication equipment and accessories needed to form all the networks. These devices are generally 19 "specifications and need power supply and ventilation. Therefore, in the configuration, we set up a 19 "equipment rack for each management room.
The wiring room should be at least 2 meters away from high-power motors (elevators and generators) and power supply substations. Both ends of the distribution frame frame should be connected with the grounding belt in the studio (according to the grounding grade), otherwise it should be connected with the main grounding terminal of the studio. The distribution frame shall be connected with the cable metal channel. Electrical continuity between wires in the same distribution frame shall be ensured.
The wiring room should be closed to ensure the safety of the installed network. The wiring room of the building should be managed and maintained by the department designated by this bureau. If it is used by several departments at the same time, they can enjoy the wiring closet, but there may be management confusion and security problems.
3.2 Organization of equipment wiring room
The organizational structure of the wiring room should be analyzed so as to place all the equipment needed in the short and medium term. The wiring room for optical fiber wiring and the wiring room for copper wire wiring may be the same. However, if there are many optical fiber modules, it is best to put them on special distribution frames.
The equipment wiring room shall consist of two facilities. One part is the wiring management rack; On the other hand, it is a placement and matching device for specific network devices.
In the wiring closet, there are wiring racks, wiring racks and 19 "components (cabinets, cabinets) required for installing the following transmission equipment: repeaters.
concentrator
Hub equipment
Local network server
Gateway, routing equipment, etc.
Active products of image communication
Various modules are placed on distribution frames and frames to connect distribution cables. In this way, a network with a certain topological structure can be formed through some accessories and active devices. By making some changes to these components, the topology can be changed.
The connection between wiring closets is realized by higher network or relay cable. The wiring closet receives all horizontal distribution cables from the office and trunk cables from other management wiring closets. These backbone cables can be twisted pair or optical fiber according to different situations.
For optical fiber wiring, the optical fiber carrier (optical fiber head or optical fiber spool) is also placed in this wiring room.
3.3 Equipment in the wiring closet
Line-to-line installation structure diagram:
The equipment in the wiring closet is divided into four parts:
Distribution frame module
optical fiber distribution frame
19 inch bearing assembly (chassis, rack, wiring board)
Partition network equipment
3.3. 1 distribution frame module
19 "RJ45 modular distribution frame (main room equipment loop interconnection)
The main application of this project is voice and computer network transmission, so we can choose RJ45 modular distribution frame CPP24WBL, which has the same interface with the computer network equipment on the management distribution frame connected to the equipment. And110p10b10r4wj distribution frame. It can be installed on the standard 19 "equipment cabinet, and can be directly connected with network equipment and voice switchboard through standard RJ45 jumper and voice jumper.
In order to meet the safety standards of the wiring room, these connection modules are made of polyacid vinegar, which is non-toxic.
These modules adopt the latest scientific and technological progress in the field of plug-ins. They are extremely compact in size and structure, made of polycarbonate (strong and high in electrical performance), and the contacts are hard and protected (hidden in a layer of plastic, so they will not protrude). The new technology of making IDC contact makes its connection performance better and transmission performance optimized, which is especially suitable for high-speed transmission.
3.3.2
19 "Load-bearing component With the increase of the transmission speed of communication network, the structured line system in buildings is widely used; There are more and more electronic devices used in the network: hubs, switches, modems, routers, bridges, multiplexers and so on. Generally, these electronic devices are based on the standard 19 ". Therefore, a certain number of 19 "standard cabinets are configured in the wiring room.
3.4 Central Wiring
The main distribution frame of this project is set on the second floor of the building, which serves as the distribution center of all UTP cable trunk lines and the distribution center of 1-3 level horizontal cables.
Fourth, system services.
We made a general contract for this project, including system design, project management, pipe trough installation, cable laying, cable termination, system installation and debugging, performance testing, acceptance report, application for 15 system warranty from PANDUIT and future system maintenance. Provide a package of services. The following are the standards and scope of engineering services:
1, engineering design, construction and acceptance criteria
1. 1 standard
IEEE 802.3 10BASE-T， 10BASE-FL
IEEE 802.3U 100Base-T
IEEE 802.5 token ring
Environmental Impact Assessment/Traffic Impact Assessment 568 Environmental Impact Assessment /TSB 40
EIA/TIA SP-2840
IEEE 802.6 FDDI/CDDI/TPDDI
CCITT ATM 155MBPS
1.2 Installation design specification
Code for Electrical Design of Civil Buildings in China JGJ/T 16-92
EIA/TIA 568 wiring standard for commercial buildings
The performance test conforms to the LAN cable plan of Underwriters Laboratory (UL).
Code for communication design of industrial enterprises
Technical specification for construction and acceptance of local telephone line engineering
Release time:> (Standard of China Engineering Construction Standardization Association)
2. Design services
When it is confirmed that we will undertake this project, our engineers will design the building integrated wiring system for users according to the design standards of pandit Company in the United States on the premise that the demander provides the architectural blueprint.
The integrated wiring system should refer to the requirements and standards of domestic communication and computer networks for transmission lines. If there is any conflict between the standards, the higher standard shall prevail. And provide users with engineering design schemes such as pipeline scheme, building distribution, system configuration, equipment selection and project progress.
3, construction services and staffing
3. 1 Pipe trough installation, cable laying and supervision:
In order to ensure that the cable is not damaged during the wiring process, we will send two engineers appointed by PANDUIT to supervise the construction personnel to complete the cable laying in the building on site; In addition, we will also send a professional pipe trench construction team to be responsible for the on-site installation of the pipe trench and the laying of cables, so as to ensure that the cables meet the requirements of high-speed transmission indicators in different environments; In order to ensure the wiring quality, we will use special instruments to detect the channel interference, attenuation and other performances of the line in time, and submit the proof documents of the detection results.
3.2 Wiring and termination:
Responsible for the installation of main distribution frame and sub-distribution frame, as well as the cable wiring, system setup, installation and jumper connection of each subsystem. This part of the work will be undertaken by our engineers and technicians to ensure high quality completion.
3.3 Testing:
The test is divided into two levels, namely self-test and PANDUIT test. Engineers shall conduct follow-up tests at both ends and fill in test records in detail, including line sequence, on-off test, crosstalk test and attenuation test, which must conform to PANDUIT standards.
4, project acceptance and service
4. 1 acceptance and guarantee:
After the whole construction and testing process, we will submit complete engineering documents and system test data to customers; Finally, check and accept the project together with the customer leaders and relevant project leaders, and submit the acceptance certificate after confirming that it is qualified.
From the date of acceptance, we are responsible for providing customers with 1 year project quality warranty. And provide lifelong system maintenance and technical support. And assist customers to apply for 15-year system warranty from PANDUIT.
4.2 Documents:
In order to facilitate users' management and acceptance, we will provide users with a complete wiring system, including system structure diagram, numbering diagram, wiring management diagram and system application scheme.
4.3 Training:
Responsible for the on-site training of 2 technicians, so that they can manage the wiring system independently.
5. Cooperation with other systems
The services (including installation, training and maintenance) of the switching system and the computing network system shall be the responsibility of the manufacturer providing the corresponding system equipment. We are responsible for organizing and coordinating the implementation of the relevant parts of the integrated wiring system, that is, the services composed of the integrated wiring system in each system. Test the reliability of the whole connection and submit the test certificate.
Verb (abbreviation for verb) system quotation
1, PANDUIT wiring material cost budget table:
leave out
The scope of work includes:
1, pipe trough installation, cable laying;
2, cable sorting, coding, identification;
3. Distribution frames in cabinets and demonstration boards shall be installed and terminated with cables;
4. Identification, termination and panel installation of sockets;
5. Initial test and performance test of wiring;
6. Write wiring diagram, coding table and completion test report.