Lightning protection measures for steel structure of LED display screen in summer
Thunderstorms in summer often bring lightning hazards to the steel frame structure of outdoor LED display screens. 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, do not need to consider installing lightning rods.
(2) 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 usually required to be less than 10 ohms. If the resistance does not meet the requirements, it must be done. Additional artificial grounding grid. The lightning arrester should also be grounded.
(3) 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 link cross-sectional area of the phase wire should not be less than 10mm square, and the cross-sectional area of the ground wire should not 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 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.
