I Lightning rod protection
II Mesh cage protection
III Early streamer emission protection |
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I Lightning rod protection
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Protection level : II as defined in NF C 17-102
Description of the installation that would have to be implemented :
6m high lightning rods installed on the roof to protect the stands and the court.
On the roof: equipotential interconnections between the lightning rods.
Each lightning rod is connected to a down conductor fitted with a
dedicated earth rod.
Remarks : The tennis court design is such that lightning rods are not
able to provide complete protection of the structure in compliance with the standard.
This solution must be rejected. |
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II Mesh cage protection
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Protection level : II as defined in NF C 17-102
Description of the installation that would have to be implemented :
50 cm capture points
installed around the roof perimeter every 15 metres.
10 metre roof mesh grid.
On the walls: down conductors every 15 metres, the bottoms of which are connected to a series of
dedicated earth rods.
Remarks : The tennis court design is such that a mesh cage lightning
conductor is not able to provide complete protection of the structure in compliance with
the standard. This solution must be rejected.
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III Early streamer emission protection
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Protection level : II as defined in NF C 17-102
Description : 5m high early streamer emission lightning
conductors installed on the roof.
Protection radius Rp =97 metres (Δt = 60μs)
for level II protection. Each lightning conductor is connected to a
down conductor fitted with a
dedicated earth rod.
Installation schematic :
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