Lightning threatens city
Basic knowledge lightning and surge protection

Lightning - fascinating but dangerous

The powerful natural phenomenon of lightning and thunder has fascinated people since the beginning of mankind. For a long time, the enormous force of a thunderstorm was believed to be a supernatural power and humans felt themselves at its mercy. Since the Age of Enlightenment and the advancement of technology, this heavenly spectacle has been scientifically investigated. In 1752, Benjamin Franklin’s experiments proved that the phenomenon of lightning is an electrical charge.

Thunderstorm hazards

Meteorological estimations say that about 9 billion lightning flashes occur each day around the world, most of them in the tropics. Nevertheless, the incidents of damage reported as a result of direct or indirect lightning effects is on the rise.

Lightning protection systems

Lightning protection systems are designed to protect buildings from fire or mechanical destruction and people in those buildings from injury or even death.

Lightning protection zone concept

Lightning protection zone concept

The LPZ concept according to IEC 62305-4:2010 makes it easier to plan, implement and monitor comprehensive protection measures.

In this approach, the building is subdivided into zones with different risk potentials. Based on these zones, the necessary lightning and surge protection devices and components are determined.

Setting the right basis with foundation and ring earth electrodes

Whether existing or new buildings, a functioning earth-termination system is the prerequisite for protecting people from dangerous high voltages and for the safe operation of electric systems in buildings.

An earth-termination system forms the basis for the proper function of the

  • electric systems (power supply)
  • electronic systems (information and data technology)
  • functional equipotential bonding
  • lightning protection system
  • surge protection
  • electromagnetic compatibility (EMC)
  • antenna earthing.


When lightning strikes

Find out more about the formation and types of lightning. Our brochure "When lightning strikes" provides more detailed information on how to save lives and protect material assets.


Have you got any questions? Contact us.

DEHN Singapore

Phone: +65 6659 8816

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