How are lightning protection levels specified for LED drivers?
A: 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
1 0.5 kV 2 1.0 kV 3 2.0 kV 4 4.0 kV X Special
NOTE X can be any level, above, below or in between the other levels. This level can be specified in the product standard.