Key Points of IDC Cabling System Construction

Cabling SystemThere are two methods: "field" and "well. The "field" is more suitable for the layout of the ring data center, and the "well" is more suitable for the layout of the vertical and horizontal data center. Its location can be arranged under the floor and under the ceiling, each with its own characteristics. The following describes the issues that need to be paid attention to during the wiring process:

Key Points of Integrated Wiring Construction

1. Reasonable architecture design to ensure properCableBending radius. When you bypass other cable slots from top to bottom, the turning slope should be gentle. Pay attention to whether the cables at both ends can be covered with the cover plate without pressure loss.

2. Pay attention to Tension Control During Wire laying. For cables packed with reels, we recommend that at least one worker be arranged at both ends, and set the sleeve to a self-made wire rod, the laying end workers first pre-pull some cables from the scroll box for the collaborators to extract the cables from the other end of the pipeline. The pre-drawn lines should not be too many to avoid tangle of multiple cables on the ground.

3. After the wire pulling process ends, the redundant cables at both ends should be organized and protected. When the wire is laid, the original rotation direction should be followed. The diameter of the coil should not be too small, if possible, use the waste wire head to be fixed on the bridge, ceiling or in the carton. Make a note to remind other personnel not to step on.

4. When organizing, binding, and placing cables, do not make redundant cables too long. Do not overlay the cables, enable the coils to consolidate and fix the cables.

5. During the entire construction period, the technical process should be notified in a timely manner, and the persons in charge of various types of work should communicate with each other. If any problem is found, Party A should be notified immediately to complete the tasks of other types of work in a timely manner.

6. If the unshielded twisted pair wires are installed and the grounding requirements are not high, the cables can be grounded at the Main Trough connected to the Cabinet.

7. the specification of the cable trough is determined as follows: the cross section of the cable trough accumulates 40% surplus for expansion, and the cross-sectional area of over 5 twisted pair wires is 0.3 cm². Note the isolation from the strong electrical trough when installing the cable trough. The cabling system should avoid having to walk more than 3 meters without shielding and distance less than 20cm from strong electrical lines. If it cannot be avoided, block isolation measures should be taken for the cable slot. Cable cables entering the furniture are arranged along the partition wall by the nearest ceiling trough to the ground, and buried pipes are arranged in the boring Trough on the ground to the furniture partition.

Pipe slot transition, interface should not have Burr, Line Slot transition should be smooth.

If the pipe has more than two elbows, you must keep the cable divider.

The wall-mounted bottom box should be installed more than 30 cm away from the ground, and should be highly parallel with other bottom boxes.

Use galvanized Thin-Walled Steel Pipe or PVC for pipe Series

IDC Cabling System

In the Internet age, hardware and software are very important, but the foundation for their stable operation-the data center is more important. The data center shall have high availability, high reliability, high security, scalability, and rich network resources. The following describes the cabling of the IDC.

The cabling system of the IDC directly affects the functions of the future IDC. Generally, the cabling system requires that the cabling distance be as short and tidy as possible and arranged in an orderly manner, there are two methods: "field" and "well. The "field" is more suitable for the layout of the ring data center, and the "well" is more suitable for the layout of the vertical and horizontal data center. Its location can be arranged under the floor and ceiling, each with its own characteristics, which are discussed below:

1. Floor wiring: This is the most common wiring method. It makes full use of the space under the floor, but pay attention to water leakage, mouse damage and heat dissipation under the floor, it is also necessary to ensure that the corresponding threading holes, including floors and trough, are drilled under each cabinet ).

2. ceiling wiring: This wiring method is particularly suitable for data centers that frequently require wiring. Currently, it is also very popular. The ceiling includes various wiring power supplies and Weak Current Wiring, the corresponding threading holes, including the floor and trough, should be drilled at the top of each cabinet. Of course, water leakage, mouse damage and heat dissipation should also be paid attention.

The specific wiring content includes: Power wiring, weak current wiring, and ground wiring. Both the power wiring and Weak Current Wiring are placed in the metal wiring trough, the specific size of the metal cable slot can be determined based on the number of wires and the room for development is generally 100 × 50 or 50 × 50 ). The distance between the power supply trough and the weak current trough should be at least 5 cm, and cannot be crossed between them to prevent electromagnetic interference between them. The following will be explained one by one:

A. Power wiring: during power cabling in the new IDC, the layout of the entire IDC and the UPS capacity should be arranged. In the vicinity of each cabinet and equipment in the plan, arrange the corresponding power outlet. The outlet capacity should be determined based on the power of the access device, and there should be some redundancy, generally 10A or 15A. The power supply line diameter should be based on the power outlet capacity and leave a certain capacity to purchase.

B. Weak Current Wiring: The Weak Current Wiring mainly includes coaxial cables, five types of network cables and telephone lines. When wiring, you should note that each cabinet and equipment has corresponding cables, future development needs should also be considered. Various cables should be bundled with nylon braided tapes in different categories.

C. grounding wiring: as the new machine room is equipped with high-performance computers and network communication equipment, it has strict requirements on Grounding. grounding also eliminates public impedance and prevents capacitive coupling interference, important measures to protect the safety of equipment and personnel and ensure the stable and reliable operation of computer systems. The copper strip for signal grounding should be arranged under the floor of the data room for various grounding needs in the data room. The copper strip will then be connected to the weak current signal Grounding System in the leased line.

About 6 types of cable cabling

1. If there are redundant cables between two terminals, cut the cables according to the required length instead of rolling them up and bundling them.

2. The distance between the arc-wound line segments at the connector of the cable should not exceed 2 cm. overlength may cause a large near-end crosstalk.

3. At the joint, the outer protective layer of the cable must be pressed inside the joint rather than outside the joint. Although the entire cable is stressed when it is subjected to external tension, if the external protection is laminated outside the joint, the stress will mainly be the metal part connected to the cable and the joint.

4. There is a certain limit on the tension of cables during cable connection construction, generally around 9kg. Excessive tension will damage the symmetry of cable pairs.

5. Because the outer diameter of the six types of cables is thicker than that of the average five types of cables, in order to avoid the winding of cables, especially at the elbow, you must pay attention to the fill degree of the diameter during pipeline design, generally, it is recommended that the pipe with an internal diameter of 20mm be placed with two cat6 cables.

About pre-Buried Pipelines

1. All kinds of cables may not be replaced even if they are pre-embedded. You can do this. In the corner part with the position of the kick Brick), dig a slot, the kick brick installation and wall bonding 2/3. If each grid is dry distance, install an active kick brick. The method of installing the active kick brick is to bury the wood in the wall. Movable kick bricks can drill fixed holes as needed and are fixed with copper or stainless steel wood screws. In this way, the minimum part of a pipe in the wall exceeds the final ground plane 2-5 cm ). In the future, if you need to change the weak current cable, you only need to remove the movable kick brick. The two ends of the buried pipe crossing the ground are better than the final ground plane 2-4 cm. The flood and drainage issues need to be considered for the first floor.

2. pass through the embedded pipe in the middle of the room. The two ends must be 2-5 cm above the final ground plane. The data center mainly draws a line chart, which is retained for several years after construction ).

3. If the insulation layer of the cable is damaged during pipe piercing, do not change it. The cable cabling requirements should be specified in the general decoration contract, and the responsibility for cable insulation damage should be distinguished.

Cables are pre-deployed and concentrated to the appropriate location. Generally, the cables are placed at the home of an outdoor IDC. The cables can be flexibly combined and used based on actual needs, support for telephone/fax, Internet access, cable TV, home theater, music appreciation, video on demand, fire alarm, security anti-theft, air-conditioning automatic control, lighting control, gas leak alarm, water/electricity/gas three tables, automatic CC, and other applications.