Protection against direct lightning strikes

Lightning rods are dedicated to the protection of structures against direct lightning strikes and then to conduct the lightning current safely to the ground (through the down conductors and the earthing system)
Lightning rod history starts in 1753.

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Protection against direct lightning strikes

Lightning rods are dedicated to the protection of structures against direct lightning strikes and then to conduct the lightning current safely to the ground (through the down conductors and the earthing system)
Lightning rod history starts in 1753.


1753 Benjamin FRANKLIN invents the lightning conductor. He was the first to demonstrate the electrical nature of lightning with his now famous «kite experiment». At more or less the same time in France, DALIBARD confirms the theory in Marly with his experiment with a metal rod which was electrified during storms. Jacques de ROMAS also reaches this conclusion, with a different kite than FRANKLIN’s : a copper wire is winded around the rop to the ground. The discovery rapidly lead to an extraordinary fascination for lightning conductors. They began to appear first of all on church spires and shortly afterwards on buildings. This trend in lightning conductors even gave rise to a number of original inventions including a certain lightning conducting umbrella.


1880 A Belgian physicist, named MELLSENS, recommends protecting buildings by covering them with metal wires connected to a series of spikes on the roof and then well earthed. This was the very first meshed cage.


1914 First attempts to improve on the single lightning rod by the Hungarian-born SZILLARD and the Frenchman, DOZÈRE.


1986 Following several years’ research resulting in improved awareness of the physical properties of lightning, a new type of lightning conductor is developed giving stronger ionisation around the terminal through the use of electrical equipment independent of any external power source. Indelec decides to develop this new theory and registers its first world patent for the PREVECTRON® technology. Immediate national recognition for the initiative comes in the form of two awards for innovation.


1996 The PREVECTRON® lightning conductor has been used successfully in France and throughout the world for 10 years. Making the most of the 1993, 1994, 1995 and 1996 on-site test campaigns carried out in real- life lightning conditions in the USA and in France by the C.E.A. (French Atomic Energy Commission), Indelec has developed the latest addition to their range of lightning conductors : the PREVECTRON®2.


1999 Indelec is certified ISO 9002 delivered by BVQI for manufacturing and marketing the PREVECTRON®.


2000 Indelec opens its firts foreign subsidiary on the american continent in Florida.

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