Lightning protection guide by OBO

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Last revision 2020

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

Strana 167 z 288

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Additional earth conducts are laid and connected with one an- other grid format. The earthers are typically laid apart. Earthing voltage UE With potential control Without potential control Potential control street-light pole TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 167 Chapter The external lightning protection system .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 2.6 Potential control The potential control reduces the step voltage close to rods down conductors building. The lightning current distributed through the metal grid system and the voltage drop and the resulting step voltage are reduced. the distance from the rod down-conductor increases, the depth the earther cable also increases (in increments 0.5 m)