Lightning Conductors
Lightning rods
AFA 0001 PF
NF C 17-100, IEC 1024
Simple lightning rod " Franklin " Blunt Tip Type
Franklin lightning rod, which are blunt tip tapered, have a perfectly slender and
attractive point. They exist in nickel/chromium-plate copper and stainless steel
versions. They have a standard length of 2,4m and can be extended by the addition of
treated steel and stainless steel elevation rods. These systems do not require guying
and can be up to 7 or 8 m long. The tip of 2F Franklin lightning rods features a
solid point of marine bronze or stainless steel.
Ref.
Designation
Type of point
AFE 0100 PC
AFA 0001 PF
AFA 0002 PF
AFA 0003 PF
AFA 0004 PF
AFA 1001 PF
AFA 1002 PF
AFA 1003 PF
AFA 1004 PF
Franklin lightning rod
Franklin lightning rod
Franklin lightning rod
Franklin lightning rod
Franklin lightning rod
Franklin lightning rod
Franklin lightning rod
Franklin lightning rod
Franklin lightning rod
Nickel copper
Nickel copper
Chromium-plate
+
Treated Steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Total
height
m
1
2.40
4.15
5.90
7.65
2.40
4.15
5.90
7.65
Base
o.d.
mm
22
30
33
36
49
30
34
42
48
Weight
kg
0.75
3.75
7.55
11.75
16.65
3.50
7.50
12.50
18.50
Elevation
rods
number
1
2
3
1
2
3
" Field trial tests in the United States, carried out over many years research have confirmed
that blunt lightning rods are struck by lightning in preference to sharp pointed lightning rods."
"Lightning rod improvement studies" by C B Moore, W Rison, J Mathis, G Aulich. Journal of Applied Meteorology, May 2000.
" Industrial stack " model
This model is only available in stainless steel, This points are bent to keep them out of
fumes and corrosive vapours. They are generally used in quantities of two or more,
depending on the diameter of the stack (see UTE Standard C 17100)
Ref.
Designation
Type
AFA 1005 PF
Franklin lightning
"Industrial Stack"
Franklin lightning
"Industrial Stack"
Stainless
steel
Stainless
steel
AFA 1006 PF
hm
1
Straight
section
hm
0.30
2.4
0.80
Height
Bend
Base
Weight
a°
30
o.d.
M10
kg
1
30
30
3.5
Lightning rods protection level
α (˚)
AFJ 3100 SE
fixing clip
80
70
NOTES
1. Not applicable beyond values marked x.
Only the fictive sphere and mesh methods are applicable in this case.
2. h is the height of the device above the volume to be protected.
3. "α" is the hall-angle of the vertex of the cone of revolution, defining the
radius of protection.
4. Protection levels I, II, III and IV are defined by the standard.
60
50
40
30
xI
20
x
II
Protection
Level IV
10
0
x
x III
0
10
20
30
40
50
60
h (m)