GAE

The Active 1D ® excitation advance is obtained by a devicenamed « impulse device ». Its principle consists in storing electrostatic energy present in the atmosphere at a stormy cloudapproach to release the ascending discharge excitation in a goodtime. This device operates with an integrated sensor which measuresthe surrounding electrical field value. It generates then a polarity inversion of the lightning rod head,creating a sudden amplification of the electrical field on its point.

Enhanced protection zone

The Active 1D® radii of protection here below mentioned, are defined for the four "Np" levels of protection(from I to IV) regarding to "h" real height between the lightning rod point and the highest point of the structure to protect.

∆T : Excitation advance, for Active 1D®, ∆T=12, 25, 45 and 60µs

• Np : level of protection with more or less severity (I to IV) determined by the lightning risk assessmentwith the Lightning Risk software according to NFC 17-102 standard,
• H (m) : height between the lightning rod point and the highest point of the structure to protect.