Detailed Explanation Of The Main Technical Parameters Of Surge Protectors

Return loss: Indicates the proportion of the leading edge wave reflected by the protective device and is a direct measure of the compatibility of the protective device with the system impedance.

Maximum longitudinal discharge current: Refers to the maximum peak surge current that the surge protective device can withstand when a standard lightning wave with a waveform of 8/20μs is applied once per line to ground.

Maximum transverse discharge current: Refers to the maximum peak surge current that the surge protector can withstand when a standard lightning wave with a waveform of 8/20μs is applied once between lines.

Line impedance: Refers to the sum of the loop impedance and inductive reactance through the protective device at the nominal voltage Un. Commonly referred to as "system impedance."

Peak discharge current: There are two types: rated discharge current Isn and maximum discharge current Imax.

Leakage current: Refers to the DC current flowing through the surge protection device at a nominal voltage Un of 75 or 80 volts.