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Planning aid, generalinformationGradual surge reduction with lightning protection zonesLightning protection zoneLPZ 0 ALPZ 0 BLPZ 1LPZ 2LPZ 3Lightning protection zone conceptThe lightning protection zone conceptdescribed in internationalstandard IEC 62305-4 (DIN VDE0185 Part 4) has proved to bepractical and efficient. This conceptis based on the principle of -gradually reducing surges to asafe level before they reach theterminal device and cause damage.In order to achieve this situation,a building's entire energy networkis split into lightning protectionzones (LPZ = Lightning ProtectionZone). Installed at each transitionfrom one zone to another is asurge arrestor for equipotentialbonding. These arrestors correspondto the requirement class inquestion.Unprotected zone outside the building. Direct lightning impacts, no shielding against electromagnetic interferencepulses LEMP (Lightning Electromagnetic Pulse)Zone protected by external lightning protection system. No shielding against LEMP.Zone inside the building. Low partial lightning energies possible.Zone inside the building. Low surges possible.Zone inside the building (can also be the metal housing of a consumer). No interference pulses through LEMP orsurges present.02 TBS-Katalog_2010_Neuer_Stand / en / 30/03/2010 (LLExport_00986)14 OBO TBS
Zone transitions and protective devicesBenefits of the lightning protectionzone concept• Minimisation of the couplingsinto other cable systemsthrough arresting the energyrich,dangerous lightning currentsdirectly at the point thecables enter the building.• Malfunction prevention with -magnetic fields.• Economic, well-plannable individualprotection concept fornew and old buildings and reconstructions.Type classes of the surge protectiondevicesOBO surge protection devices areclassified in accordance with DINEN 61643-11 into three type classes− Type 1, Type 2 and Type 3(previously B, C and D). Thesestandards contain building regulations,requirements and tests forsurge arrestors used in AC networkswith nominal voltages of upto 1,000 V and nominal frequenciesof between 50 and 60 Hz.This classification enables arrestorsto be matched to differentrequirements with regard to location,protection level and currentcarryingcapacity. The table belowprovides an overview of the zonetransitions. It also shows whichOBO surge protectors are to be installedin the energy supply networkand their respective function.Planning aid, generalinformation02 TBS-Katalog_2010_Neuer_Stand / en / 30/03/2010 (LLExport_00986)Zone transitionsZone transitionLPZ0 B to LPZ1Zone transitionLPZ1 to LPZ 2Zone transitionLPZ2 to LPZ 3Protection device for lightning protection equipotential bonding in accordance with DIN VDE 0185-3 for direct orclose lightning strikes.• Devices: Type 1 (Class I, requirements class B), e. g. MC50-B VDE• Max. protection level according to standard: 4 kV• Installation e.g. in the main distributor/at building entryProtection device for surge protection to DIN VDE 0100-443 for surge voltages arriving through the supply networkdue to remote strikes or switching operations.• Devices: Type 2 (Class II, requirements class C), e.g. V20-C• Max. protection level according to standard: 2.5 kV• Installation e.g. in the power distributor, subdistributorProtection device, intended for surge protection of portable consumers at sockets and power supplies• Devices: Type 3 (Class III, requirements class D), e.g. FineController FC-D• Max. protection level according to standard: 1.5 kV• Installation e.g. on end consumerTBSOBO15
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Page 9 and 10: Negative and positive chargesStudie
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MCR protection for 2-pin for power
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