Usually SPDs provide repeated system protection over their lifetime, but with global warming threatening to increase lightning strikes by more than 50 percent by the end of the century - according to research from the University of California – the duration of their life span may be less than predicted. For many installations, like the Empire State building in New York, already suffering about 100 lightning strikes a year and sometimes as many as 50 strikes on a single day, ABB’s QuickSafe offers a higher degree of safety.
The life span of a SPD varies according to the size and frequency of the surges it encounters, which makes the timing of its replacement unpredictable. Conventionally, if its lifetime ends before replacement, then the equipment it protects is left vulnerable.