Protection systems

Simple rods

“Franklin type” simple lightning rods (IEC/NF EN 62305-3)

Franklin lightning rods, which are tappered, have a perfectly slender and attractive point. In stainless steel, they have a standard length of 2.05 m and can be extended by the addition of treated steel or stainless steel elevation rods. These systems do not require guying and can be up to 7 or 8 m long. 

“Industrial chimney” model

This model only exists in stainless steel version. The points are bent to keep them out of fumes and corrosive vapors. They are generally used in quantities of two or more, depending on the diameter of the stack.

Radii of protection

Not applicable beyond values marked x.
Only the fictive sphere and mesh methods are applicable in this case.
h is the height of the device above the volume to be protected.
“a” is the hall-angle of the vertex of the cone of revolution, defining the radius of protection.
Protection levels I, Il, III, and IV are defined by the NF C 17-100 standard.

 

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