Lightning protection guide by OBO

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Last revision 2020

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

Strana 179 z 288

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Material Cross-section cables connecting the in- ternal metallic installations with the equi- potential busbar Copper mm² Aluminium mm² Steel mm² Table 3.2: Minimum dimensions cables, protection class IV TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 179 Chapter The internal lightning protection system . To implement equipotential bonding correctly, there- fore necessary select the right components use. Connections for testing purposes are permit- ted. 3. Equipotential busbars and earthing clamps are key components this kind installation. Switching devices must not inserted into the protective con- ductor.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 Equipotential bonding according IEC 60364-4- 41 and IEC 60364-5-54 Protective conductors must protected suitable manner against mechanical damage, chemical or electrochemical destruction well against electro- dynamic and thermodynamic forces. the context of lightning protection equipotential bonding, these must fulfil the requirements and undergo tests as defined IEC 62561-1.1 Minimum dimensions cables Minimum cross-sections according IEC 62305-3 for lightning protection equipotential bonding Material Cross-section cables connecting different equipotential busbars with one another or with the earthing system Copper mm² Aluminium mm² Steel mm² Table 3.2 Versions Each system has different environmental and normat- ive requirements relating equipotential bonding.1