French lightning rod (ESE2500)
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Satelit+(satellite) brand pre discharge lightning rod
DUYAL-MESSIEN, a French company, was formed by the merger of two companies, Dur established in 1835 and Mason established in 1927. It is now a leading lightning protection professional company in the world, with its main product being the "Satelit+" (satellite) brand early discharge lightning rod. The company is led by scientific and technological research and is one of the main manufacturers of early discharge lightning rods in France. The company is a member of the French Electrotechnical Union (V.T.E. Commission) and is one of the French members of the International Electrotechnical Commission (I.E.C), the authoritative body for developing new international standards.
All products of the company that protect against direct lightning are guaranteed to comply with the current strictest lightning protection standard - NFC17-102 standard.
Its products enjoy a high reputation in Europe and Southeast Asia. The French "Satellite" brand pre discharge lightning rod complies with the national standard GB50057-94 "Code for Design of Lightning Protection of Buildings" of the People's Republic of China. |
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1、 Working principle
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When lightning clouds form, an electric field (atmosphere) is generated between the clouds and the ground, with a strength of up to 5 kV/m. Thus, corona discharge begins to appear on the raised parts of the ground or metal components.
When a downward leader is formed inside the lightning cloud layer, the lightning strike begins. The downward leading charge moves towards the ground in a stepped manner. The charge carried by the descending leader establishes an electric field on the ground.
An upward precursor is generated from a building or object on the ground. This upstream leader propagates upwards until it converges with the downstream leader. At this point, lightning current flows through the channel formed. Other buildings on the ground may generate several ascending precursors. The first upstream leader that converges with the downstream leader determines the location of the lightning strike.
The working principle of the "satellite" lightning rod for early discharge is to generate a faster upward leader than a regular lightning rod
Note: This description only describes negative downward lightning strikes, which is the only application example of the electrical geometric model. So far, this type of lightning shock is the most common occurrence.
2、 Characteristics
● Superior performance
1. Under the same conditions (height), "Satelit+" has a larger protection range than ordinary lightning rods.
2. Lightning strikes are more accurate, reducing the probability of lightning strikes hitting non lightning rods.
Safe and reliable: No radioactive elements, stainless steel material, corrosion-resistant, strong wind resistance.
Maintenance free: Passive, no power supply required, no energy consuming components.
Easy installation: lightweight, no need to install coaxial shielded cables.
● Beautiful appearance
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3、 Internal Structure Diagram
4、 Satelit+Design Description
The installation of "satelit+" lightning rods within China must strictly comply with the mandatory provisions of the national standard of the People's Republic of China - "Code for Design of Lightning Protection of Buildings" (GB50057-94):
1. Determine the lightning protection category of the building based on the area, height, number of mine days, geographic environment correction factor, and building usage nature of the protected building.
2. Determine the selection of one or several "satellite" lightning rods based on the type of lightning protection and the area of the building.
3. The down conductor should be electrically connected to the main steel reinforcement of the building, or two or more down conductors should be made according to regulations.
4-5. The down conductor should be equipped with a disconnect card and insulated for protection on the nearby ground.
6. The grounding body and grounding resistance should comply with the requirements of GB50057-94.
7. The product has a warranty period of 20 years.
5、 Test certificate
Satelit+"(satellite) brand pre discharge lightning rod
The product liability insurance is underwritten by the People's Insurance Company of China. |
According to the regulations of the French National Professional Committee, the Dur Mason "satelit+" early discharge lightning rod has been evaluated by COFRAC technology under the supervision of the National Professional Committee, and its laboratory has been designated by the National Professional Committee as the Les Renardieres High Voltage Physics Laboratory and Merlin Gerin High Voltage Center of EDF, and has obtained the LCIE certificate from the French Industrial Electronics Center Laboratory. The test certificate proves that "satelit+" complies with NFC17-102 and is in a world leading position. |
6、 Product model and protection radius of "satelit+" |
modelAdvance discharge time |
△T |
ESE2500 |
25 microseconds |
ESE4000 |
40 microseconds |
ESE5000 |
50 microseconds |
ESE6000 |
60 microseconds
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△ T: According to the French international NFC17-102 regulations, the actual test value is greater than the specified value for the start-up lead timeDifferent models with different installation heights |
The protection radius (Rp) of "satelit+" lightning protection for various types of lightning protection buildings
Satellite+ |
Needle tip height |
2 |
4 |
5 |
7 |
10 |
15 |
20 |
45 |
60 |
H=horizontal height above the protected object (m) |
The first type of lightning protection building |
17 |
34 |
42 |
43 |
44 |
45 |
45 |
ESE2500 |
- |
- |
24 |
46 |
58 |
59 |
59 |
60 |
60 |
ESE4000 |
- |
- |
28 |
55 |
68 |
69 |
69 |
70 |
70 |
ESE5000 |
- |
- |
32 |
64 |
79 |
79 |
79 |
80 |
80 |
ESE6000 |
- |
- |
The second type of lightning protection building |
23 |
45 |
57 |
59 |
61 |
63 |
65 |
70 |
ESE2500 |
- |
30 |
60 |
75 |
76 |
77 |
80 |
81 |
85 |
ESE4000 |
- |
35 |
69 |
86 |
87 |
88 |
90 |
92 |
95 |
ESE5000 |
- |
40 |
78 |
97 |
98 |
99 |
101 |
102 |
105 |
ESE6000 |
- |
The third type of lightning protection building |
26 |
52 |
65 |
66 |
69 |
72 |
75 |
84 |
85 |
ESE2500 |
33 |
66 |
84 |
85 |
87 |
89 |
92 |
99 |
100 |
ESE4000 |
38 |
76 |
95 |
96 |
98 |
100 |
102 |
110 |
110 |
ESE5000 |
44 |
87 |
107 |
108 |
109 |
111 |
113 |
120 |
120 |
ESE6000
Calculation formula for protection radius:press
According to NFC17-102, the needle tip should be at least 2 meters (h1) above the level of the protected object. When the height of the lightning rod is different (h2, h3,... hn), its protection range (radius) is Rp2, Rp3... Rpn, and the calculation formula should consider the lightning protection level of the protected object, local thunderstorm activity, and geological terrain. The protection radius of "satelit+" is related to its height (h), its startup timing (model), and the selected protection level: when h ≥ 5,
When h<5, see the protection radius table.Note:
Rp is the protection radius on the considered horizontal plane, h is the horizontal height difference between the needle tip and the top of the protected object, D is the radius of the rolling ball (flash distance)The first type of building is
20m (GB50057-94 specifies D=30m)The second type of building is
45mThe third type of building is
60m
△ L is the upstream preemptive distance of "satelit+"
△ L=V (meters/microseconds) ·△ T (microseconds)
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V is the leading propagation speed, and experimental data shows that V=1 meter/microsecond
7、 Assembly method
1. The "satelit+" lightning rod consists of four parts: A, B, C, and D.
2. After removing each component from the packaging box, install it in the following order:
1) Loosen the two bottom parts of pulse generator C using the hex wrench in the accessory
Screw.
2) Remove the three covers of the discharge tip X on the upper part of the pulse generator, and make special adjustments to X
The distance between the two needle tips should not be touching, with a spacing of 1-2mm.
3) Pass the lightning rod D through C in the direction shown in the diagram, and place the head on the port of B.
4) Tighten the lightning rod tips A and D tightly, and use two wrenches to tighten them firmly.
5) Use an Allen wrench to tighten the two screws at the bottom of C, between B and C
It should be supported by three pillars and firmly secured as a whole.
6) Screw the bottom of the needle into the processed lightning rod bracket.
Material and size (as shown in the figure below)
Flashing tip: 20mm diameter stainless steel
Induction discharge body: stainless steel material
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