Lightning protection guide by OBO

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Last revision 2020

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

Strana 252 z 288

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Where building fitted with external lightning pro- tection, lightning currents and surge volt- ages pose particularly high risk.structured cabling, the cabling divided into three subsections: 1. The floor distributors are directly linked the building distribut- or and, the same time, offer connection opportunit- ies for the various terminal devices/connections sock- ets. For fast transmission rates to be achieved, fibre optic technology often used as the transmitting medium the primary cabling. Primary cabling can character- ised long cable lengths due the locations dif- ferent buildings. The speed the connection also plays important role. The connection point the build- ing distributor (BD). Lightning and surge protection measures should be installed ensure that this infrastructure remains free from faults and not destroyed powerful currents. 3. fibre-to- the-desk, the floor distributor and terminal device are linked fibre optic cable. Various transmission media are used here. This offers higher data rates than conventional copper cables and also less susceptible interference from electromagnetic impulses. TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 252 Chapter The internal lightning protection system . 2. Primary cabling The primary cabling for connecting building com- plexes (horizontal). Here, too, fibre optic technology used the transfer medium. However, the most wide- spread option the classic connection via Twisted Pair cable. Secondary cabling The secondary cabling connects the individual floors of the building with one another (vertical). Tertiary cabling In tertiary cabling, fibre optic cables can used as the transmission medium alternative copper network cabling. The tertiary cabling the cabling that links terminal devices/connection sockets with floor distributors within floor the building (horizontal). the separation distance (s) not maintained, there risk arcing from the external conductor system onto internal cables running along the building wall, for example in dado trunking. In buildings with external light- ning protection system, internal protection against partial lightning currents and surge voltages is needed