surge protective device -meba

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1. 177 Installation Diagram Building lightningproof regional map Classification of lightningproof zone for buildings (LPZ) Primary protection for power supply (MBD1-B) Primary protection for signal circuit (MBX-RJ45) (ALT) Protector for CATV circuit (MBD-T) Secondary protection for power supply (MBD1-C) Secondary protection for signal circuit (MBX-RJ45) Protector for antenna feeder In order to distinguish the degree that lightning electromagnetic pulse(LEMP) on different lightningproof zone and the position of equal potential inthe joint between differentzones. The protected zone divided into several lightningproof zones (LPZ). LPZ0A zone:all objects in this zone may be strikeby direct lightning and carry full lightning current, electromagnetic field strength has no attenuation. LPZ0B zone: withi n the relevant scopeof selected grounder radius in this lightning-proof zone, the objects may not be strike by direct lightning, but electromagnetic field strength has no attenuation. LPZ1 zone: the objects in thiszone are impossibly strike by lighting, lighting current on conductors and electromagnetic field strength are attenuated, the attenuation degree is determined by field solutions in the buildings. LPZ2 zone: if required to further reduce lighting current and electromagnetic field strength, it shall add extra lightningproof zone, such as machine room with shield, metal shellof equipment, machine cabinet and etc; it shall determine suchzone according to ambient conditions for the protected object. Typical application of surge protective device for information building LPZ0A LEMP LPZ0A LEMP LEMP LEMP LEMP LPZ0A LPZ0B LPZ0B LPZ1 LPZ2 LPZ3 LPZ1 LPZ0A LPZ0B 1 3 2 Lightning rod External lightning protection equipment Antenna Lead referrals (Computer room) Equipment metal case, etc Shielding (3) Structures within the room (Representative shie lding 2) Buildings (Representative shielding 1) In LPZ1 and LPZ2 on the interface bonding belt Lightning zone In LPZ0B area and LPZ1 boundaries of surface bonding belt Lead referrals The electric power, the signal cable, routes and metal pipe Ground net.through introducing (door, window) Hole CATV B1 B2 C2 C1 HUb A2 A1 Satellite three line Lightning rod Grounding lead referrals Cable TV Signal cable Network cable office office office office office Receiver Server Workstations Signal the first level protection Potential spark gap Total switchgear room Points switchgear room SwitchSignal the second level protection Thefirstlevel protection The second level protection Logic where 2. 178 N L3 L2 L1 PE MBD1-B100 MBD1-B80 MBD1-B65 MBD1-B60/3+NPE MBD1-C40/3+NPE L=5-10m L=5-10m MBD1-D10/1+NPE MBD1-D20/1+NPE Up 3.0kV Up 2.0kV Up 1.5kV TT System (1) Total distribution ark Distribution electricity ark Equipment place According to different protection modes, nomenclature and definitions of IEC standard, Low voltage distribution system divided into three kinds on basis of earthing mode of low voltage distribution system. 1. TT power supply network: TT mode is namely the protection system that metal shell of electric consumer directly earthed, calling protective earthing system, or TT system. 2. TN power supply network: this system require metal shell of electric equipment is connected with neutral line, also calling Neutral protection system, indicated by TN. 3. TN-C power supply network: neutral line also used as protective ea rthing wire, calling Neutral Protective earthi ng line, indicated by NPE. 4. TN-S power supply network: neutral line (N) and protective earthing (PE) wire are separated. 5. TN-C-S power supply network: in the temporary power supply for the constructing sit e, if front supply ne twork is TN-C, and TN-S network shall be required on local constructing sites, so PE line can be divided from general distribution box on local site. 6. IT network, I means isolation without earthing, or earthing via high resistance. Every two letters of 'T' means electric consumer of loading side is protective earthed. MBD Surge Protective Device(SPD) Installation diagram Basic network of Power Supply 3. N L3 L2 L1 PE MBD1-B60 MBD1-B40 L=5-10m L=5-10m MBD1-D10 MBD1-D20 Up 3.0kV Up 2.0kV Up 1.5kV MBD1-B100 MBD1-B80 MBD1-B65 Total distribution ark Distribution electricity ark Equipment place TT System (2) N L3 L2 L1 PE MBD1-B100 MBD1-B80 MBD1-B65 MBD1-B60 MBD1-C40 L=5-10m L=5-10m MBD1-D10 MBD1-D20 Up 3.0kV Up 2.0kV Up 1.5kV TN-S System PE Total distribution ark Distribution electricity ark Equipment place Installation Diagram Basic network of Power Supply 179 4. N L3 L2 L1 PE L=5-10m L=5-10m PE MBD1-B100 MBD1-B80 MBD1-B65 MBD1-B60 MBD1-C40 MBD1-D10 MBD1-D20 Up 3.0kV Up 2.0kV Up 1.5kV Total distribution ark Distribution electricity ark Equipment place L3 L2 L1 PE MBD1-B100 MBD1-B80 MBD1-B65 MBD1-B60 MBD1-C40 L=5-10m L=5-10m Up 2.0kV Up 1.8kV Total distribution ark Distribution electricity ark IT System The Wiring Diagram TN-C-S System Installation Diagram Basic network of Power Supply 180 5. MBD1-B100/80 Operation Elements Technical Parameter 108 L L L N 90 45 50 62 35 MBD1-B100 Rec Uc Imax In Up : : : : ~385V 100kA 60kA 3.0kV GB18802.1 IEC61643-1 MBD1-B100 Rec Uc Imax In Up : : : : ~385V 100kA 60kA 3.0kV GB18802.1 IEC61643-1 MBD1-B100 Rec Uc Imax In Up : : : : ~385V 100kA 60kA 3.0kV GB18802.1 IEC61643-1 MBD1-B100 Rec Uc Imax In Up : : : : ~385V 100kA 60kA 3.0kV GB18802.1 IEC61643-1 Installation To be mounted between LPZ0Aor LPZ0B zone and LPZ1 zone, adopts 35mm standard mountin g rail. The cross sectional area of 2 multi-strand soft copper conductor: 6~ 35mm . Generally it shall be mountedin the incoming side of main distribution panel or box. 2 Earthing wire shall be of 10mm dual color conductor, its lengthnotmorethan500mm. In order toeliminate the influence on normal service of power netwo rk due SPD is invalid, it shall add fuse or breaker to be series connected in Lline. (NB: selected according to standard current In) SPD as only one side of terminals, able to prevent from being electric touching, indoor fixedly mounted, limiting voltage. SPD has built-in disconnector, when SPD is invaliddue to overheating or breakdown, the disconnector can automatically separate SPD from the network, meanwhile send an indication signal. The visible window show white color in normal service, if to be separated from network, it will show red color. Maxi discharging current of each wire: up to 100KA. Model and specification MBD1-B60 MBD1-B80 MBD1-B100 Maxi discharging current Nominal discharging current Response time Application Protection grade Remote signal Function Indication of invalidation Remarks 60 80 100

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