Lightning protection guide by OBO

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Last revision 2020

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

Strana 169 z 288

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g. All metals in direct contact with the ground water can corrode due stray current aggressive soils. can also occur when a single type metal embedded two distinct envir- onments, e.5 mm Rustproof steel (a) Strip solid 2.5 mm Round, solid mm Cable (b) mm² Round, solid mm Copper-coated steel (c) Round, solid mm Strip solid 2. Causes corrosion Corrosion occurs when different metals are connected with one another soil, water molten salt, e.7 Materials and corrosion protec- tion The following materials are preferred for use extern- al lightning protection systems: Hot galvanised steel, rustproof steel, copper and aluminium.5 mm Round, solid mm Cable (b) mm² Round, solid (d) mm (a) Chromium 16%; Nickel 8%; Carbon 0.27: Material, form and minimum dimensions air-termination cables, air-termination rods, earth entry rods and conductors TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 169 Chapter The external lightning protection system .5 mm Round, solid (b) mm Cable (b) mm² Round, solid mm Aluminium Round, solid mm Cable mm² Copper-coated aluminium alloy Round, solid (c) mm Aluminium alloy Strip solid 2.08% (b) Diameter can certain applications reduced mm2 (diameter mm) mechanical resistance not primary criterion.5 mm Round, solid mm Cable (b) mm² Round, solid mm Hot galvanised steel Strip solid 2.9% copper content (d) Can used for air-termination rods and base Table 2.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. Material Form Minimum dimensions Copper, tin-plated copper Strip solid 2.g. steel earth and concrete. (c) least copper plating with 99. alu- minium round conductors arrestors and copper- /steel earthing material. Corrosion is when metal material reacts with its surroundings to the detriment the material’s properties. The minimum cross-sections, shape and material depend the appropriate application