According to the Technical Code for Testing Lightning Protection Devices of Buildings (GB/T21431-2015), all lightning protection devices put into use need to be subject to routine lightning protection testing once a year. So why should lightning protection test be carried out? Tell you the importance of lightning detection in detail. 1、 Through lightning protection detection, the operating conditions of the lightning protection devices put into use can be known in time. All lightning protection devices (including external lightning protection devices and internal lightning protection devices) are in use

Main detection contents of lightning protection detection: 1. Check whether the lightning protection device, lightning arrester, downlead, grounding device and other connections are effective. 2.10 Effective grounding resistance of grounding system is required. 3. Whether the ground insulation impedance of the power lightning protection system is within the allowable range, whether the grounding system is firm, and whether the instantaneous clamp voltage value changes. 4. Information system signal lightning protection system, considering whether the connection resistance is within the allowable range of parameters, whether the clamp voltage instantaneous value changes, and whether the insulation resistance to ground

The preparation before lightning protection test is called pre inspection. Before the lightning protection device detection, the detection instruments, meters and measuring tools used shall be inspected, and the inspection contents are as follows. 1. Instrument identification or calibration Check whether the instrument, instrument identification certificate and calibration certificate are within the validity period. It is generally required that each testing instrument and instrument should be included in the measurement testing. The testing unit can entrust a verification unit with measurement certification qualification to carry out routine measurement testing and inspection

Process: 1. Project preparation 2. Installation of grounding device 3. Laying wires in a concealed manner 4. Making and installing lightning protection belt support 5. Installing lightning protection mesh 6. Installing lightning rod 7. Testing basic knowledge of grounding resistance: 1. Lightning protection grounding system consists of three parts, namely lightning arrester, downlead and grounding device. 2. Lightning rod, lightning net and lightning strip can be used. 3. There are two laying methods of downlead: exposed and concealed. 4. The grounding device is divided into human+industrial grounding body and natural grounding

The preparation before lightning protection test is called pre inspection. Before the lightning protection device detection, the instruments, detection instruments and measuring tools used shall be inspected, and the inspection contents are as follows. (1) Check the appearance of the testing equipment and its auxiliary equipment. Check whether the insulating layer of the testing wire is damaged. If it is damaged, replace it or use insulating tape to deal with the damaged part to avoid the exposed metal wire from touching live objects or grounding bodies during the testing process, which may cause danger to people

Thunder and lightning is a common natural phenomenon, and its huge energy makes people afraid. It can destroy anything. Lightning protection and disaster reduction are worth advocating. It is of great significance for China's economic development, production and social stability to do a good job in lightning protection inspection. Lightning protection device is mainly composed of lightning arrester, downlead and grounding device, especially the grounding device is buried underground, and the downlead is often blown by rain and wind, which is easy to break due to corrosion over the years

1、 The building where the direct lightning protection machine room is located has lightning rod, lightning strip and other external lightning protection facilities, and no additional design for external lightning protection is needed. If there is no direct lightning protection before, it is necessary to make a lightning strip or lightning protection net at the top of the machine room. If the machine room is in an open area, lightning rods need to be installed as the case may be. The lightning rods and lightning strips must be provided with downlead and connected to the ground grid. 2、 Lightning protection of power supply system 1. For power line protection of network integrated system, first, the power supply entering the general distribution room of the system

The anti-static technology of computer room is part of the scope of computer room safety and protection. The problems caused by static electricity are not only difficult for hardware personnel to find, but also sometimes make software personnel mistakenly think that it is a software fault, thus causing confusion in work. In addition, when static electricity is discharged to computers or other equipment through the human body (the so-called sparking) to a certain extent, it will also give people a feeling of electric shock (for example, when touching the computer monitor or chassis sometimes). Therefore, the anti-static floor

Chongqing Lightning Protection Testing Company shares 8 points of knowledge about lightning protection and grounding. What should we do in case of thunderstorm? Chongqing Lightning Protection Testing Company teaches several lightning protection knowledge: 1. Do not shelter from rain on the roof or under trees, do not continue to play on the roof of buildings such as the roof, and do not enter isolated sheds, sentry boxes, and trees to shelter from rain. If it is absolutely necessary, keep a distance of 3 meters from the trunk, squat down and close your legs. 2. Don't stay in the river, lake or seashore to swim on the water or near the water

Lightning protection grounding is divided into two concepts. One is lightning protection to prevent damage caused by lightning stroke; The second is electrostatic grounding to prevent electrostatic hazards. With the increasingly extensive application of cathodic protection for storage tanks, its protection effect has attracted more and more attention, and the contradiction between lightning protection grounding specifications and cathodic protection specifications has become increasingly prominent. What are the main types of lightning protection grounding? 1、 The factory lightning protection is divided into the overall structure lightning protection, namely the lightning protection of the main plant. The main foundation is provided with grounding electrodes and grounding strips,