Computer network system of lightning protection

Abstract: the computer network system of lightning protection information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. 0 the introduction of computer network system equipment contains a large number of very large scale integrated circuit semiconductor module, the over voltage, over current capacity is very fragile, once the lightning strike, will cause damage or personal injury. Therefore, the state of the computer network system lightning protection. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a computer network system of lightning protection article details. 0 the introduction of computer network system equipment contains a large number of very large scale integrated circuit semiconductor module, the over voltage, over current capacity is very fragile, once the lightning strike, will cause damage or personal injury. So on lightning protection work of computer network system, countries formulated the related laws, regulations and relevant standards and norms. Hebei electric power authority, the author of this paper the actual environment of computer network system, computer network system in hebei electric power dispatching center of the lightning protection scheme. Comply with the following standards: in the concrete implementation GB50057 - Building lightning protection design specifications, GB50174-94 Electronic computer room design specification, GB2887-93 Site safety requirements, GB2887-88 computer Technical documents, GB50054-89 computer site Low voltage electrical design specification, GB3482-95 Lightning test, GB11032-83 electronic equipment Exchange non-clearane arrester, GA173-89 1998 lightning protection of computer information system security, IEC1312 lightning current electromagnetic pulse protection, IEC61643SPP power lightning protection device, VDE0675 over-voltage protector. 1 grounding system layer from 25 provincial building circular and located in the main building of the main building on the west side of south capital, the capital, south and north of flats are east-west, north and south between 15 m, height of 9 and 5 layers respectively. Computer room which located in the main building 13th floor, north flats 2, south of flats 4 layers. The main building to have the conditions of the lightning proof and lightning rod, downlead, earthing body, earth grounding resistance measurement is less than 1 & Omega; 。 South and north of flats of grounding network with the main grounding network together. Each room construction installation grounding network and are connected to the building fabric. Grounding network using 5 mm & times; 30 mm copper row, net-like laid under the engine room floor, room UPS power supply system power socket and signal ground in zui connected to the grounding network in close range. 2 integrated wiring to prevent lightning damage caused by wiring is not reasonable, when wiring to take the following measures: (1) tank erection, the power cord and network data keep a certain distance with a power socket (socket 1米) ； (2) wan cable and LAN cable different slot erect; (3) the ceiling of the go trough board on both ends of the ground; (4) inside the wall metal grounding protection pipe ends; 5. Select building in the middle of the cable shaft as the signal cable dedicated channel; 6. To protect the safe operation of the network, and the important choose RJ45S - switch port E100/4 - And UR - F EJ45× 16 multiport network lightning protection device. The power system power lightning protection and overvoltage protection room introduced by building the total transformer room, two lines of three-phase automatic switching. The high side for lightning protection measures, focus on low voltage side. In the round tower, south of flats, the capital's engine low-voltage distribution cabinet installs level of lightning protection, use Germany OBO lightning protection product UPl20 chase flow of lightning protection box; The lightning protection box under the overvoltage of high energy shock, also can realize the protection, zui big limit zui chase flow for each thread 120 ka. So the lightning protection box to withstand from some of the lightning current under the direct lightning stroke. When the line overload, lightning protection module within the circuit breaker failure of lightning protection module will automatically disconnected from the main circuit, send out sound and light alarm and remote communication alarm at the same time. Each room the input end of the V20 - UPS C / 3 + NPE/AS lightning protection, AS the level 2 lightning protection; The lightning protection device in the line with the zero line between pressure limiting the use of three zinc oxide varistor module, make the over voltage clamp to very low amplitude, at the same time, pressure sensitive resistance in a very short period of time release large discharge current; Between zero line and the ground, the device adopts the high-energy discharging module to limit overvoltage; If due to the large fluctuations in mains or malfunction caused by lightning protection device is overloaded, can automatic security action, the lightning protection device from the main circuit from down, avoid the damage of lightning protection device for opening cause a short-circuit. South of flats each server computer room power into the line of the input selection - (CNS) 3 - Lightning protection socket as a level 3 D lightning protection. Network equipment, lightning protection configuration is shown in figure 1. 4 conclusion computer network system in hebei province electric power company dispatching building lightning protection scheme to meet the requirements of the safety of the lightning protection system, can guarantee the computer network system reliable operation under the special weather conditions. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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