According to IEC standards, for the AC power supply line entering the building, the junction of LPZ0A or LPZ0B and LPZ1 area such as the main distribution box of the line should be equipped with the surge protector of Class I test or the surge protector of Class II test as the first level protection; At the junction of subsequent protection areas such as distribution line distribution box and distribution box of electronic equipment room, the surge protector of Class II or III test can be set as the post protection; Especially important electronic information equipment power ports can be installed Class II or Class III test surge protectors for fine protection.   First-level surge protector: Through 10/350μs waveform test, the maximum impact current limp value is 12.5KA,15KA,20KA,25KA. The main function is to discharge flow.   Secondary surge protector: by 8/20 mu s wave test, the parameters of the maximum discharge current lmax commonly used 20 ka, ka 40, 60 ka, ka, 80 100 ka, main effect is limited.   Level 3 Surge protector: Pass the test of the combined waveform (1.2/50μs), the characteristics of the product must also withstand the test of the waveform (8/20μs). It is usually a compound surge protector, whose function is to clamp the pressure, which can provide finer protection for the end equipment.   For details about the parameters of the first, second and third level surge protectors, please contact our Thor Electric for consultation. We will make specific analysis according to the different use environment in different areas of different projects to ensure that there is no mistake.

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Post time: Nov-16-2022