When we use the LED display, many external factors will affect its use. Thunder is such a factor, so we need to do lightning protection work, then what about lightning protection work?
1) In order to protect against direct lightning strikes, install lightning rods on the support structure of LED advertising screens, indoor LED displays or LED advertising screens. There are tall buildings next to them, and lightning rods cannot be installed.
2) For the counterattack of the steel structure, connect the steel structure to the outer shell of the LED advertising screen, equipotentially, and ground it. The ground resistance usually needs to be less than 10 ohms. If the resistance does not meet the requirements, it will be completed. Additional artificial grounding grid. The arrester should also be grounded.
3) For the lightning current induced on the power line, install a single-phase or three-phase power arrester on the power line. The cross-sectional area of the phase wire is not less than 10 square millimeters, and the cross-sectional area of the ground wire is not less than 16 square millimeters.
4) For the lightning current induced on the signal line, add a signal lightning arrester to the signal line. The signal arrester is determined according to the signal interface of the system. If a network cable is installed, install a network signal lightning protection device, and install a db9 interface lightning protection device on the serial port.
Its lightning protection work is the above four points, I hope everyone can do a good job in the process of using it. At the same time we need to carry out maintenance work.
