SURGE COUNTER (CDA)
The lightning  surge counter (CDA) is integrated by three counters, one magnetic circuit (with  gap) and an energy amplifier powered by a battery. It can register three  different current levels thus allowing to measure not only the number of strikes  but its magnitude, depending on the area in which they are  installed.

The CDA  allows to calibrate three levels of current, ranging from 400 A to 100 kA. It registers  in each counter a determined interval of current, thus assuring the reliability  of the surge counts. In addition, the magnetic gapped design avoids the  possibility of core saturation.

RELIABILITY OF THE CDA
The CDA was  designed with three counters with the purpose of quantifying the current level  of the lightning surges that affect a system, thus allowing to measure the  severity of the strikes.