How to install and configure lightning protection and grounding for server rooms

Hello! Computer room lightning grounding needs to be done in four areas for reference: 1, taking into account the interference of lightning or other telecommunication equipment, computer rooms should not be set up in the top of the building or against the side of the external wall, special circumstances limitations, should be set up to prevent lightning interference shielding layer. For particularly important computer systems, consideration should be given to setting up an independent shielded computer room. Buildings (including computer rooms) within the equipment and piping grounding installation should be carried out in accordance with the relevant norms, and do a good job of equipotential bonding; 2, to prevent lightning hazards should also be prevented from lightning strikes caused by electromagnetic pulse, computer room distribution box should be set up SPD (anti-electromagnetic surge) protection devices, to prevent power supply to the room power supply due to lightning strikes caused by electromagnetic pulse power outage. In addition, for the important system host, its communication cables should also be set up SPD protection device, due to the number of communication cables are generally more, so the communication line protection settings should be based on the specific actual situation of the reasonable settings; 3, the electrical grounding system should be used TN-S grounding system, PE line and phase line separate, the computer room power access should be done to repeat the grounding; 4, the computer room grounding Generally divided into AC work grounding, DC work grounding, safety work grounding, lightning protection grounding. According to the "Building Lightning Protection Design Code" (2000 edition) requirements, lightning protection design using *** with the grounding system, the grounding system should be *** with a set of grounding devices. Information systems, all exposed conductive materials (various boxes, shells, racks and other metal components) should establish a first-class potential linkage network. Therefore, the electrical lightning protection design should be set up in the computer room dedicated equipotential interconnection row, through the lead wire and the building total equipotential interconnection row connection. According to the principle of layer-to-layer equipotentiality of the grounding system for ***, the use of structural main reinforcement as the lead wire is more suitable for the grounding system for ***. Also emphasizes that the grounding system of the building grounding resistance should not be greater than 1 Ω. "Computer Room Lightning Protection Design Code" (GB50174-93) of the requirements of Section IV: Section IV Grounding Article 6.4.1 Electronic computer room grounding device should be set up to meet the safety of the person and the normal operation of electronic computers and the safety of the system equipment requirements. Article 6.4.2 electronic computer room should be used in the following four grounding methods: First, AC work grounding, grounding resistance should not be greater than 4 Ω; Second, the safety of the work grounding, grounding resistance should not be greater than 4 Ω; Third, DC work grounding, grounding resistance should be determined according to the specific requirements of the computer system; Fourth, lightning grounding, should be in accordance with the current national standards, "Building Lightning Protection Design Specification" implementation. Article 6.4.3 AC work grounding, safety and protective grounding, DC work grounding, lightning protection grounding and other four grounding is appropriate *** with a group of grounding devices, the grounding resistance according to which the minimum value to determine; if the lightning protection grounding is set up separately when the grounding device, the remaining three grounding is appropriate *** with a group of grounding devices, grounding resistance should not be greater than the smallest of these, and should be in accordance with the current national standards, "Lightning Protection Design Specification for Buildings". Requirements to take measures to prevent backlash. Article 6.4.4 DC work grounding has special requirements to set up a separate grounding device for electronic computer systems, the grounding resistance value and the distance between the grounding body and other grounding devices should be determined in accordance with the requirements of the computer system and the relevant provisions. Article 6.4.5 electronic computer system grounding should be taken to a single point of grounding and is appropriate to take equipotential measures. Article 6.4.6 When more than one electronic computer system *** with a group of grounding devices, it is appropriate to use the electronic computer system to connect the grounding wire and grounding body.