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Lightning Current and Surge Arrester
PIV is lightning arrester type 1 according to EN 61643-11 and IEC 61643-1. These arresters are recommended for use in the Lightning Protection Zones Concept at the boundaries of LPZ 0 – 1 (according to IEC 1312-1 and EN 62305) for lightning current equipotential bonding and elimination of switching surges that originate in power supply systems entering the building.
The PIV is mainly intended for use in TNC systems. For TNS and TT systems it is necessary to combine these arresters with lightning arrester B25, B50 or B80 which are intended for equipotential bonding between N and PE.
The main use of PIV12,5 arrester is in structures of LPL III – IV according to EN 62305, e.g. residential houses with cable supply and subdistribution boards of big industrial structures.