Lightning protection guide by OBO

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Last revision 2020

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

Strana 91 z 288

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The ring installed the top 20% the building's height; the mesh size depends does in the case roof installation the lightning pro- tection class, e. Up now, roof cable holders for routing the grid have not been part the scope application the IEC 62561-4. 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 91 Chapter The external lightning protection system .g. mesh size must there- fore not exceeded.21: Mesh width for different lightning protection classes 3rd step: Installing the mesh A number different grid sizes apply, depending on the lightning protection class the building. All the lightning protection measures must included the roof sealing plan- ning. According to this, lightning protection components may not im- pair the sealing the roof. However, DIN 18531-1 describes the re- quirements and basic planning and execution prin- ciples for sealing used and unused roofs.g. lightning protection class III corres- ponds loop size m. 4th step: Protection against lateral impact From building height and the risk serious damage (e. Building height (h) 60m Mesh method The round conductors the mesh are installed apart with roof cable holders. with electrical electronic devices) is advisable install ring circuit protect against lat- eral impact.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 l Length m Mesh width Mesh width flat roof Lightning protection class Mesh width I m II m III m IV m Table 2. If, our example, the overall length greater than the cable lengths specified in Chapter (grid method), expansion piece must also integrated for temperature-controlled length changes. Where the material thickness and connections are suf- ficient, the metal roof parapets is used air-termination sys- tem and mesh. The building our example has building lightning protec- tion class III