Lightning protection guide by OBO

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Last revision 2020

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

Strana 194 z 288

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devices Measured pulse voltage (voltage resistance) the resources (green line) Protection level Up of the OBO surge protection devices (SPDs) (orange line) Usable difference (e. surge voltage arrestor must limit the voltage this a smaller value. main distributor Installation location, e. sub-distributor Installation location, e. the actual surge current smaller than the nominal surge current, the response voltage and hence also the protection level drops.5 corresponds supply line length 1.g. surge voltage category for example, for a single-phase connection 230 network, the minimum rated surge voltage 1. Required protection level for 230/400 equipment accordance with IEC 60364-4-443 Resource the infeed point the system Resource part the fixed installation Resource for connection the fixed installation Resource requiring special protection Installation location, e.g.: 2.g. The protection level surge voltage arrestor the maximum voltage when the nominal surge current is applied it.25 supply line (8/20)) Coordination insulation per 60664-1 TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 194 Chapter The internal lightning protection system .5 kV.g.Coordination insulation The rated surge voltage depends the surge voltage category