The Specifications And Placement Of Surge Arresters Are Important Considerations For Outdoor Electrical Installations Exposed To Strong Lightning Strikes.

In outdoor locations such as elevated power lines, communication towers, and substations, the threat of transient overvoltages far exceeds that of indoor environments. On the one hand, the high-amplitude discharge generated by a direct lightning strike can instantly trigger a million-volt impact. This type of pulse voltage is transmitted along the line and the casing of 22 kv lightning arrester, which will put huge stress on the line insulation. On the other hand, the electromagnetic induction pulse generated by a nearby lightning strike can also induce an overvoltage waveform that propagates into 220 kv lightning arrester through the conductor path. Outdoor facilities are surrounded by open areas with little obstruction, resulting in a significantly higher exposure to these high-energy transients.