Select Surge Protectors Based On The Intensity Of Lightning Activity In The Environment.

For lightning protection systems, the intensity of lightning activity determines the impact amplitude of the discharge current on the lighting arrester 33kv. The maximum discharge current Imax represents the peak current that lightning arrester 20 kv can withstand when subjected to an 8/20µs lightning strike.

In areas with frequent lightning strikes, the higher Imax model should be selected. If the building is located in an area prone to thunderstorms or with complex terrain, selecting Imax≥40kA can improve the lightning arrester 22kv ability to withstand a single strong lightning current.

If lightning activity is weak and the building environment is stable, a lightning arrester 24kv with Imax ≈20kA can meet the requirements. This avoids the cost and installation complexity caused by excessively high lightning arrester 24kv 10ka specifications, while still meeting protection requirements.