How can the lightning conductor lead the steel strand to the ground flat iron?
In this sense, most of the buildings in the steel market, as long as its diameter greater than 8 mm, can be used to create a lightning rod, just installed on the surface after brushing a layer of paint can be up to two, the price is very low. In this sense, the lightning rod is not brand, because the lightning rod is only a small part of the flash receiver, and any metal component can be used as a lightning flash device. Only to emphasize the role of lightning rod, emphasizing the lightning rod of the famous brand, while ignoring the other common lightning arrester lightning, lightning arrester ignored out of objective facts can not play the role of wire and a grounding device, this concept is harmful and needs to be corrected.
The so-called rolling ball method is assuming a certain radius (according to the building of the protection level, 100 meters, 60 meters, 45 meters, 30 meters) of the ball rolling along the outer surface of the building, when the ball only touches the grounding device and the ground, without touching the need to protect the site, the site will be connected the protection of lightning arrester. Popularly speaking, this ball can contact place is the place which the ray can hit, the sphere cannot contact place, is in the scope which the receiver protects.
Therefore, rather than spend high price to buy the so-called special lightning rod so as to protect the building, according to the scientific principle of the rolling ball method, investigation on the scene carefully, careful design, calculation and check, honest on-site construction according to the national standard, with the ordinary lightning lightning with lightning arrester, the protection of places to do, so that we can achieve safe and economical purpose.
Note that there are a variety of so-called lightning brands on the market, mostly in the "pre discharge" or "early discharge" as its selling point, most of the so-called "special lightning rod" imported from abroad to the scope of protection, it claims far exceeds the scope of protection calculation according to the principle of the rolling ball method and the price is very expensive, hundreds of thousands of dollars a. The so-called scientific principles of these lightning rods have not been recognized in the mainland of China so far, and their lightning protection effect has not been accepted by practice. The building even if the installation of a lightning rod like lightning, in the acceptance, or to be calculated in accordance with the principle of the traditional rolling ball method, high prices to buy such lightningrods customers to beware of the risk in this area.
