General Information


The importance of lightning protection

Every year some 4 million thunderstorms break over Central Europe, each of them being capable of producing several thousands of lightnings. Current intensities of 50.000 A are nothing unusual. Where and when a lightning strikes is completely left to chance.

Apart from direct lightning discharges to which a building is subjected, lightning overvoltage damages to low-voltage consuming facilities, in particular with electronic measuring and control equipment have alarmingly increased during the last few years.

The damage statistics of the insurance companies show that today the indirect damages are much greater than direct lightning damages. Considering the increasing "electronization" in all fields, losses are possible which are not justifiable from the economic point of view.

The figures below show the catastrophic effects overvoltages can have when lightning strikes.

But this must not be so, for we are not able to avoid lightning discharge but we are in a position to ensure that the lightning is conducted outside the building on the shortest and fastest way to earth.

By means of a lightning protection system designed according to the latest standards IEC 62305 (respectively DIN EN 62305) comprising both "external" and "internal" lightning protection.


Examples for the results of lightning damages

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Lightning discharge in a building without lightning
protection system, via antenna and antenna cable
which vaporized explosively. The resulting blast
wave destroyed the whole roof and parts of the outer
walls of the neighboring building.
Lightning discharge in a television frequency
transducer with insufficient surge protection
device. The overvoltage destroyed the
electrical equipment, the distribution box,
and a supply cable 600 m in length.



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Lightning discharge in a family house

 


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