All parts of the country have entered the summer, and the thunderstorm weather in summer often brings hidden dangers of lightning strikes to the outdoor LED display steel frame structure. This article shares several lightning protection measures with you.
(1) 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, you do not need to consider installing lightning rods.
(2) For the counterattack of the steel structure, connect the steel structure to the shell of the LED display screen, make the equipotential, and do the grounding. The grounding resistance is usually less than 10 ohms. If the resistance does not meet the requirements, do it Additional artificial grounding grid. The lightning arrester should also be well grounded.
(3) For the lightning current induced on the power line, install a single-phase or three-phase power surge protector on the power line. The link cross-sectional area of the phase wire cannot be less than 10mm square, and the cross-sectional area of the ground wire cannot be less than 16mm square.
(4) For the lightning current induced on the signal line, install a signal lightning protection device on the signal line. The signal lightning arrester is determined according to the signal interface of the system. If it is a network cable, install a network signal lightning protection device, and install a db9 interface lightning protection device for the serial interface.
