No more lightning damage on tower cranes!
Is your crane a lightning magnet?
Are you terrified of lightning damage on your crane and to your operation?
You already have lightning arrester rod and a proper low resistant grounding system but you still experience lightning strikes on your crane?
Now, there is finally a 100% successful solution to stop lightning strikes on tower cranes; EvoDis® Lightning Prevention System.
Why do cranes attract lightning?
Lightning seeks for the highest conductor structure in an area to strike and this is no coincidence. During a storm; all positive charges on the ground climb up to the highest point of all structures in order to “catch” the opposite charged branches of the storm cloud.
When these two opposite charged groups meet, they generate a conductive path which is called “Lightning”. All current inside cloud flows down to ground through this path and this creates the damage on the structure because that structure emitted the ground charges towards the strom cloud and it is now on the lightning current’s path.
The result is structural damages on equipment, failure in operation, drops in service, additional maintanence costs, injuries and even deadly results for crane operator or closeby workers in construction site.
There is definitely a need of lightning protection for tower cranes.
Lightning Rods on Cranes?
Tower cranes are made of conductive material and they are the highest structures around. This makes these structures open to lightning threat and they need to be protected against lightning strikes and possible secondary damages.
In case of use of a lightning arrester solution, the arrester collects all ground charges on itself and emit them towards the cloud charges in order to “protect” the surrounding area which is exactly their purpose of use.
However, lightning current must reach the ground through the shortest and fastest way which is still the tower body. Eventhough a conductor cable is installed between lightning arrester and grounding system, lightning current prefers to follow larger surfaces instead of a conductor cable and flows through surface of the tower.
In this case, using a lightning arrester does not solve the problem and tower crane and all electricals on it are still affected by lightning current with risk of irreversable damages.
As a result, there is no difference between protecting tower cranes with a lightning arrester and leaving the crane unprotected against lightning.
EvoDis® Lightning Prevention System for Tower Crane Lightning Protection
The best way of being protected from direct lightning strike damages and prevent secondary damages by electromagnetic field of lightning current is keeping lightning away from protected structure.
EvoDis® Lightning Prevention System dissipates ground charges on tower crane and minimizes the risk of getting hit by lightning. This prevents any damage on crane as well as electrical units and keeps the system in service.
The point of lightning strike depends on the ground charge accumulation and emission on a structure and reach of these emitted charges to oppositely charged downward streamers. Lightning hits the point of emission and lightning current flows down to the ground through the structure.
EvoDis® Lightning Prevention System dissipates ground charges on structure through thousands of tiny sharp points and blocks the emission of these charges. This process makes the protected site “invisible” to lightning and prevents a possible strike on it.
EvoDis® Lightning Prevention System is a lightning protection solution with 100% success in high voltage laboratory tests and in field tests. EvoDis® has been applied to hundreds of towers worldwide and none of these towers have been hit by lightning since the dates of installation.
Best way of lightning protection is staying away from lightning.
EvoDis® Lightning Prevention System keeps lightning away.