Lightning protection guide by OBO

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Last revision 2020

Vydal: OBO BETTERMANN s. r. o. Autor: OBO BETTERMANN

Strana 62 z 288

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47 20 2.Protecting roof structures using multiple air-termin- ation rods If you use several air-termination rods protect an object, you must take into consideration the penetra- tion depth between them.42 0.01 0.01 3 0.13 0.21 15 1.10 0.02 4 0.64 0.1: Penetration depth (p) according the lightning protection class according IEC 62305 TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 62 Chapter The external lightning protection system .07 0.46 0.03 0.84 Table 2.03 0.04 0. For brief overview see Table 2.28 0.02 0.63 0.05 10 0.07 0.16 0.72 1.04 0.06 0.10 0.1, calculate the penetration depth use the following formula: Formula for calculating the penetration depth Penetration depth Radius rolling sphere Distance Air-termination sys- tem Penetration (p) the rolling sphere between the air-termination rods Distance air- termination system (d) m Penetration depth, light- ning protection class I, rolling sphere: m Penetration depth, light- ning protection class II, rolling sphere: m Penetration depth, light- ning protection class III, rolling sphere: m Penetration depth, light- ning protection class IV, rolling sphere: m 2 0.04 5 0.96 0.68 1