Distribution system for environment design of integrated wiring Room

Distribution system should meet the requirements of information room, ensure power supply reliability and flexibility, ensure personal safety, facilitate construction, maintenance and management, and must be technologically advanced and economically reasonable. The lighting system complies with the relevant state regulations. More integrated wiring: integrated wiring fiber transmission channel test.





1. Design Principles





advanced Technology, High reliability: Integrated management, good flexibility, system security, confidentiality, easy to expand, convenient maintenance, economical and practical, reasonable ahead.





2. Power supply





Computer room power supply using 380/220v voltage, 50Hz frequency and three-phase five-wire system (i.e. TN-S systems) wiring mode. Because of computer room equipment and computer auxiliary equipment, the two kinds of equipment for the power supply have different requirements, so the use of two different power supply, that is, a common power supply, one for the uninterrupted. Ordinary power supply to computer-aided equipment, such as air-conditioning, lighting, maintenance sockets, auxiliary sockets, etc. uninterruptible power supply to computer equipment, such as servers, hosts, terminals, routers, switches, firewalls and other equipment.





two kinds of power supply to introduce different distribution boxes, that is, installed in the main engine room of the general power distribution box and UPS power Distribution box, and then by the distribution box to the computer equipment and computer auxiliary equipment respectively.





3. Control and Protection equipment





in order to ensure the safe and reliable operation of the equipment, power supply accurate and sensitive to power and power, power control and protection equipment should choose a reliable and sensitive air switch (partial with leakage protection). Depending on the equipment situation, with overload protection, short-circuit protection and leakage protection functions to ensure that the power control and equipment safety.





4. Computer dedicated ground




The DC-
of the computer system is also called logically. In order for the computer to work properly, DC is a 0 potential reference point, but it is not necessarily a terrestrial potential. If the grounding system is connected to the Earth by a low resistance path, it is called the Earth. If the grounding system is not connected with the Earth, but is insulated from the Earth, it is called a DC suspension. Usually after the appropriate treatment and grounding, that is, the use of series grounding-multi-point grounding, parallel grounding-single point grounding and network grounding and so on.





In order to achieve the grounding resistance r≤l ohm, the artificial buried metal parts (such as steel pipe, steel, flat steel, round bar, etc.) is called artificial grounding, and as the grounding of the direct contact with the earth metal components, metal well pipe, reinforced concrete structures such as the foundation, as well as metal piping and equipment, such as natural grounding. The metal wires connected with the grounding body and led to the computer room are called grounding wires, and the sum of grounding and grounding wires is called grounding device.





5. Cable laying and piping wiring





with the system diagram with each low-voltage distribution box, set Ammeter, Voltmeter, LED. The distribution cabinet is designed according to actual electricity consumption and expandable capacity. The power consumption is 30kw. Grounding using Tn-s way, using three-phase five-wire system, 0 lines and ground strictly separate. UPS power supply mode for 3x16mm2+2x10mm2 flame retardant cable into the cabinet.





take into account the temperature of the computer room cable affected by the environment and poor heat dissipation conditions, cable load flow to take the ambient temperature of the +40℃ load flow. All cables use flame-retardant power cable or flame-retardant XLPE power cable to meet the fire prevention requirements of the engine room. All cabinet equipment and wall sockets are completed through the 200mmx50mm Paving bridge, into the wall part through the JDG20 pipe or plastic hose. In order to prevent leakage of the room floor, resulting in the wire and cable is soaked, the floor of all metal wire trough through the trough bracket above ground 5cm.





ceiling lamp, socket power line selection flame-Retardant PVC insulated copper core wire, wire pipe laying, cable end through metal hose to prevent mouse bites. All wiring heads are made of solder or crimping caps. All metal pipes, metal wire grooves and metal hoses are reliably grounded. Between the metal tube and the metal pipe, the metal wire groove and the Metal wire groove, and between the metal pipe and the metal wire groove are connected by the grounding wire. When the metal wire trough passes through the different fireproof zones, the fire blocking material is closed to reduce the fire spreading.





6. Lighting system




The lighting power supply of
computer room belongs to the category of auxiliary power supply system, but it has certain particularity and independence. The quality of the room lighting will not only affect the operation of computer operators and software and hardware maintenance staff efficiency and physical and mental health, but also affect the reliable operation of the computer. Therefore, the reasonable choice of lighting, lamp type, layout and some related equipment, in the renovation of electrical engineering can not be ignored.





Because of the different types of rooms in the room Division of labor, the control requirements are not the same, the average size of the host room can be 200LX, 300LX and 500LX value. Basic workplace that is, the average illuminance in the first category of auxiliary work is valued at 100LX, L50LX and 200LX, and the second to third type of auxiliary room can be referenced by the implementation. At the same time, the lighting uniformity, lighting stability, light source color, glare and shading requirements mentioned in the schedule, because these factors will also be operators and maintenance personnel can not be underestimated impact.





General lighting is also called general lighting or general lighting, refers to the whole place or place of a part of the basic illumination uniformity. Mixed illumination refers to the addition of local illumination to form the so-called mixed illumination when the general illumination does not satisfy the local demand. Accident lighting also known as emergency lighting, refers to the normal lighting after the failure or power off, for the processing of computer legacy work or for personnel, equipment transfer lighting. In the mains power outage, in order to ensure that the staff to save and other emergency treatment, the room uses an efficient emergency lighting. Mains stop automatic input, emergency lighting by UPS power supply, and uniform layout without dead ends. The whole area is provided with a power supply by the distribution cabinet, and emergency lighting is set up. The main engine room is provided with a set of emergency evacuation indication sign lights.




The layout of
lighting should be based on the appearance of the room, the importance of location and the location of the equipment. From the computer room aesthetic considerations, the layout of the lamps should be evenly arranged, that is, the vertical and horizontal direction to maintain a certain distance, and according to the area of the computer room to determine the direction of the lamp; lighting should be based on the nature and role of the position to determine the layout to achieve better results, at the same time, the location of the equipment must also consider to avoid shadows, Easy maintenance and other factors.





Room lighting materials should choose without a starter or electronic ballast lamps, with light film and glare-proof lamps, can also do air conditioner back to the tuyere of the lamps, the overall decorative good lighting and luminous efficiency of the lamps.





lighting using decentralized control, that is, through the wall panel switch to control the opening of the lamp.