What are the lightning protection measures for LED displays?

Publisher: Supplier of LED Display Time: 2022-03-25 16:03 Views: 708

LED display has a wide range of applications, not only indoors, but also many outdoor applications. Depending on the use of the LED display, the installation location is also different, and some are also installed in high places outdoors, and the installation brackets are generally made of iron. In the season of frequent thunderstorms in summer, the LED display has a high probability of becoming the target of lightning strikes. Once the LED display is struck by lightning, because it is a high-density integrated display, it is highly sensitive to anti-interference. The damage of lightning to it will cause damage to the machine, electricity, and heat, and even cause a fire. Therefore, LED lightning protection measures are essential. Next, the editor of LCF will give you a detailed introduction to the lightning protection measures of LED display.



LCF protection measures for LED display:


1. For the lightning current induced on the signal line, install a signal lightning protection device on the signal line. The signal arrester depends on the signal interface of the system. If it is a network cable, install the network signal arrester, and install the DB9 interface arrester for the serial interface. The cross-sectional area of the ground wire should not be less than 1.5mm square.


2. For the lightning current induced on the power line, install a single-phase or three-phase power lightning protection device on the power line. The cross-sectional area of the link line of the phase line should not be less than 10mm square, and the cross-sectional area of the connecting ground wire should not be less than 16mm square.


3. In response to the counterattack of the steel structure, connect the steel structure to the shell of the LED display screen, do the equipotentiality, and do the grounding. The grounding resistance is generally required to be less than 10 ohms. If the resistance does not meet the requirements, additional artificial grounding grid. The lightning arrester should also be grounded.


4. For the protection of direct lightning strikes, install lightning rods on the support structure of the LED display (outdoor), indoor LED displays or LED displays with tall buildings next to them, do not need to consider installing lightning rods.


5. Protection from direct lightning strikes: In an open area, there are no tall buildings around, which proves that your pole is located in the LPZOA area and is vulnerable to direct lightning strikes. Therefore, a lightning rod must be added, and the height of the lightning rod is calculated by the rolling ball method. If it is too troublesome, the previous 45-degree polyline method (with the lightning rod tip as the center, and the place where the 45-degree angle is covered is the protected area) can also be used, but the accuracy is not so high.


6. Lightning protection grounding grid: After the lightning rod is installed, a simple grounding network must be made as a lightning discharge channel. Usually, it is more cost-effective to use angle steel to connect with flat steel.


7. Surge protection measures: Since there are optical transceivers and video servers in the distribution box, their power supply must be guaranteed, so a lightning protection socket is designed at their power supply to protect the power supply. In addition, the signal lines introduced into the power box should be equipped with lightning arresters with matching voltage and interface. The optical fiber end does not need to be installed, because the optical fiber is an insulating device and will not be affected by lightning induction, but the fiber reinforced core must be grounded nearby to avoid electrostatic induction and lightning heating effects from damaging the optical fiber.


The above are the lightning protection measures for LED display screens compiled by Lianchengfa Xiaobian. You are welcome to correct and supplement. If you want to buy LED display screens, you can also contact us Lianchengfa LED display manufacturers!