Determine Several Important Parameters Of Surge Protector
Several important parameters of surge protective device are determined as follows:
(1) Nominal voltage Un: The rated voltage of the protected system is consistent. In information technology systems, this parameter indicates the type of surge protector that should be selected. It indicates the effective value of AC or DC voltage.
(2) Rated voltage Uc: The maximum effective value of voltage that can be applied to the specified end of surge protection device for a long time without causing changes in the characteristics of the protector and activating the protection element.
(3) Rated discharge current Isn: The maximum peak value of the impulse current that the protector can withstand when a standard lightning wave with a waveform of 8/20μs is applied to the protector 10 times.
(4) Maximum discharge current Imax: The maximum peak value of the impulse current that the protector can withstand when a standard lightning wave with a waveform of 8/20μs is applied to the protector once.
(5) Voltage protection level Up: The maximum value of the protector in the following tests: sparkover voltage with a slope of 1KV/μs; residual voltage at the rated discharge current.
