The Lightning Conductor, The Lightning Rods, E.S.E. Active Lightning Rods, Active Lightning Rods

The operating principle of the Saint - Elme lightning conductor is to create free charges (ionized particles and electrons) in the air surrounding the lightning conductor and to create, within a cloud – ground electric field, a channel of high relative conductivity constituting a preferential path for lightning.

Free charges are created by the corona effect by applying on the Saint - Elme lightning conductor’s ionized point(s) the voltage supplied by cells of piezo – electric ceramics (lead zirco – titanate); their feature is to produce a very high voltage by simply modifying the applied pressure.

The Saint - Elme lightning conductor is therefore equipped with a mechanical device that transforms the stress resulting from the wind action on the lightning conductor into a pressure stress on the piezo – electric cells. The voltage therefore produced is applied, through the high voltage cable that runs inside the lightning conductor’s support pole, on the ionized point(s) to create, by corona effect, free charges. Then, these charges are expulsed, by the Venturi system, from the lightning conductor’s head, profiled on purpose.

The Saint-Elme®lightning conductor is designed for the protection of a site (building, manufacture, monument, open areas…) against the direct impact of lightning on important radii of protection.

The Specification Of Franklin France Saint-Elmo Lightning Rods

♦ The production proses of Saint Elmo E.S.E. has begun with

♦ Franklin France Co.and France Atomic Energy Commision and all rights of production reserved by Franklin France Co.

♦ It is only E.S.E. Air Terminal certified by France Atomic Energy Commision.

♦ It is a mark awarded by France Prime Ministry.

♦ It has the Warranty certificate for compliance with the NFC 17 102 standard.

♦ Contrast to the Air Terminal with electronic device, It own The 25 years of Warranty.

♦ It successfully passed the test done by BAZET, OZOIR LA FERRE and all processes are done in The over voltage laboratories.

♦ In any weather conditions the wind from 0 to 200 km/h activates the Piezoelectric Crystal for ionization.

♦ Last 15 years, over 10.000 Air Terminal have tested in the intensive thunderstormed practice areas by Franklin France Co. And they succesfully passed the test without any damage.

♦ Owing to Piezoelectric crystal is couple pole, Saint Elmo Air Terminal works both negative and positive lightning.

♦ It only process at 150 °C because of it does not have any electronic device.

♦ The rain does not effect its process because of it does not have any electronic device

♦ Contrast to the Air Terminal with electronic device, It can be tested any time after installation.

♦ It is not effected by lightning strike.

The Protection Radius of Franklin France

Rp (m)

SE 6 ΔL=15m.

SE 9 ΔL=30m.

SE 12 ΔL=45m.

SE 15 ΔL=60m.

hm

Np

I

II

III

I

II

III

I

II

III

I

II

III

2

13

18

20

19

25

28

25

32

36

31

39

43

4

25

36

41

38

51

57

51

65

72

63

78

85

6

32

46

52

48

64

72

63

81

90

79

97

107

8

33

47

54

49

65

73

64

82

91

79

98

108

10

34

49

56

49

66

75

64

83

92

79

99

109

20

35

55

63

50

71

81

65

86

97

80

102

113

30

35

58

69

50

73

85

65

89

101

80

104

116

60

35

60

75

50

75

90

65

90

105

80

105

120

Product details in PDF format

Lightning Rods Strike Risk Assessment Programme