Ke Ao Maoli
Ensure that the antenna is in the useful maintenance area of the lightning rod, the useful maintenance range radius of the lightning rod, lightning phenomenon is a common and harmful natural phenomenon, if we do not take relevant lightning protection methods, it will bring intolerable results to human beings, so for buildings and Slim Omni Antenna supplier other places, it is necessary to install lightning protection products, most users are coincidental choice Although there are many kinds of lightning protection goods in the society, most users still choose the lightning protection tower to enjoy the lightning protection service it brings.
Fuzhou electric power tower is made of high quality
. The lightning rod of the factory shall be connected with the lightning strip or ground grid on the wall through the down lead, and the grounding resistance value shall be ≤ Ω. In the area with high soil resistivity, the requirements for grounding resistance can be properly relaxed. The lightning rod tower of the line shall be installed too fine: select the transmission line tower with multiple lightning areas and easy to be struck, fortunately, the two sides are adjacent to each other SISO Directional Antenna At the same time, many ancient buildings were built on the top of the mountain without being hit by lightning. On the contrary, the valley near the left is easy to be hit by lightning. This is because the soil resistivity is different.
In addition, children's physical and mental characteristics, lack of self-control and care ability, strong curiosity and lack of risk awareness, so special attention should be paid to relevant lightning safety precautions. In the past, lightning protection for transmission lines mainly adoptedIt is relatively easy to reduce the grounding resistance of tower body in plain area. For tower in mountainous area, long radiation ground wire or deep well with resistance reducing agent are often used at each tower foot to increase the contact area between ground wire and soil and reduce the Contact Us resistivity. The grounding resistance will drop under power frequency. Measures: buildings should be installed in accordance with lightning protection design standards, such as lightning rod (belt), down lead, grounding installation and surge maintainer, such as the National Stadium "bird's nest", the main steel structure and the reinforcement in reinforced concrete should be welded to stop the effective connection, so that the "bird's nest" itself The steel structure of the "bird's nest" has become a grand installation to receive lightning, which can quickly lead lightning into the public, thus ensuring the safety of the audience.
Repair welding shall be carried out in time, the coating shall be knocked off, antirust paint shall be applied, the needle body shall be bent, the perpendicularity of the device exceeds the allowable deviation, and the interval between them shall be greater than M. when it is less than m, pressure equalizing measures shall be taken or pebble or asphalt ground shall be laid. Note: if the lightning tower is not grounded, it will be a lightning rod, so it is necessary to be careful. There are many sands on the mountain, and the soil resistivity is large; there are many rivers in the valley, Soil moisture is large, soil resistivity is small, large part of the lightning current flows into the conductor from the arrester, and spreads to the adjacent tower.
Why is that? It has been pointed out that this is related to the "Faraday cage" effect, Faraday cage: the "golden bell cover" against lightning? Cars are not afraid of lightning because of the existence of Faraday cage, so what is Faraday cage? ,To prove the fact that Faraday found that the excess charge on the charged conductor only existed on its surface and would not affect any object locked inside it, he built a room with a metal foil shell and installed a high-voltage electricity to shock the shell of the room after an electrostatic attack.
Why is that? It has been pointed out that this is related to the "Faraday cage" effect, Faraday cage: the "golden bell cover" against lightning? Cars are not afraid of lightning because of the existence of Faraday cage, so what is Faraday cage? In, Faraday found that the excess charge on the charged conductor only existed on its surface, and would not affect any object blocked in its interior. To prove this fact, he built a room with a metal foil shell and installed it with high-voltage electricity to strike the shell of the room through an electrostatic attack.
In addition, children's physical and mental characteristics, lack of self-control and care ability, strong curiosity and lack of risk awareness, so special attention should be paid to the relevant lightning safety prevention measures. In the past, the lightning protection of transmission lines mainly used to reduce the tower grounding resistance, which is relatively easy in the plain area. As for tower in mountainous areas, long radiation ground wires or In order to increase the contact area between the ground wire and the soil and reduce the resistivity, the ground resistance will drop under the power frequency state.
Fuzhou electric power tower is made of high-quality goods
prepare the device scheme and component supply scheme, organize the construction, standardize the device process, and calculate the maintenance radius and scope according to the rolling ball method for the maintenance scope of the lightning rod tower. The tower of the base station exceeds the fixed heightWhen the number of lightning strikes is in proportion to the square of the height of the tower, that is to say, when the tower exceeds a certain height, the time of lightning strike will increase obviously. The lights of the tower are usually set to ~ on the top of the tower. If alternating current is used, the power line must be shielded wire, and the upper and lower ends of the outer shield sleeve must be grounded.