Detailed Introduction To The Parameters Of Surge Protector

With the rapid development of electronic technology and the widespread use of personal computers, large and medium-sized computers, and related information equipment, building protection against lightning electromagnetic pulses (overvoltages) has become increasingly important. Consequently, a growing number of overvoltage protection products have entered the market, and surge protective device SPDs (Surge Protective Devices) are becoming increasingly familiar.

As mentioned above, when selecting a surge protector for a 220V/380V three-phase system, one must first identify the type of low-voltage distribution system—IT, TT, or TN. Then, the lightning protection classification of the building should be determined, along with the energy distribution of the lightning current and the withstand voltage level of the equipment. SPD parameters should be carefully considered. On-site inspections should be conducted to maximize advantages and minimize disadvantages, ultimately selecting the most appropriate surge protection device device to reduce surges experienced by the protected equipment to acceptable levels (a lower level of protection).