Application Of Surge Arresters In Lightning Protection Design Of Communication Lines
Electric vehicle charging stations, as complex integrated systems, have data communication interfaces including low-voltage signal channels such as Ethernet and RS-485. These lines are far more sensitive to external transient voltage pulses than the main power supply lines. Lightning or power grid surges often intrude into the communication links through electromagnetic coupling, causing hidden damage to control modules and networked devices.
In the overall protection strategy for charging piles, professional high voltage lightning arrester equipment should be installed at the entry point of the communication line. 33kv lightning arrester has rapid response capabilities, able to transfer overvoltage to the ground wire in a very short time, effectively suppressing transient impacts caused by external lightning or conductor induction, thereby protecting the downstream communication modules and control units.
When designing a 10 kv lightning arrester circuit, it is necessary to consider the matching of its operating voltage level with the characteristics of the protected circuit, especially for circuits used for digital signal transmission, where the withstand voltage is much lower than that of power circuits. Therefore, the specifications of a 11 kv lighting arrester circuit should be selected to match the parameters of the communication interface in order to maintain the stability and long-term reliability of data communication.
