The IEC 61000-4-5 standard and test-method establishes a common reference for evaluating the immunity of electrical and electronic equipment when subjected to surges such as lightning.
Surge test standards for lightning protection as below, IEC61000-4-5 ranks:
Level Open-circuit test voltage
NOTE X can be any level, above, below or in between the other levels. This level can be specified in the product standard.
The lightning protection level of uPowerTek’s LED driver products is 4K/6K in common mode, and 10K in difference mode.