Catalogo Tbs en 2010 2011

TBS | Catalogue 2010/2011

Transient voltage andlightning protection systems

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Welcome to Customer Service

Service telephone: +49 (0)2373 89-1500

Telefax for enquiries: +49 (0)2373 89-7777

Telefax for orders: +49 (0)2373 89-7755

E-mail: [email protected]

Internet: www.obo.de

Use the direct line to OBO Cus-tomer Service! On the Service Hot-line +49 (0)2373 89-1500, we areavailable every day from 7.30 am-to 5.00 p.m. for any questionsabout the OBO product range forelectrical installations. The newlystructured OBO Customer Servicecan offer you the full service:

Competent contacts from yourregion

All the information on the OBOproduct range

Knowledgeable advice on spe-cial application topics

Quick, direct access to all thetechnical data of the OBOproducts we also want toprovide the best in customerrelations!

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Contents

Planning aids 5

Surge protection energy technology, arrestor, Type 1 117

Surge protection energy technology, arrestor, Type 1+2 127


Surge protection energy technology, arrestor, Type 2+3 175


Sure protection, photovoltaics 199

Data and information technology 213

Protection and spark gaps 249

Measuring and test systems 253

Equipotential bonding systems 257

Earthing systems 269

Interception and arrestor systems 287

Directories 337

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OBO TBS seminars: First-handknowledgeWith a comprehensive programmeof training courses and seminarson the subject of surge voltageand lightning protection systems,OBO is able to support its cus-tomers with specialist knowledgefrom a single source. Alongsidethe basic theoretical principles, theprogramme also deals with practi-cal implementation in everyday ap-plications. Special calculation andapplication examples round off thecomprehensive programme ofknowledge transfer.

Invitations to tender, product in-formation and datasheetsWe can make life easier for you:With our comprehensive selectionofmaterials designed for practicalapplications, which provide youwith effective support with theplanning and calculation of aproject. These include: Invitations to tender Product information Information sheets DatasheetsThese documents are continuallyupdated and can be downloadedat no charge at any time from theInternet download area atwww.obo.de.

Invitations to tender on the Inter-net at www.ausschreiben.deMore than 10,000 entries from theKTS, BSS, TBS, LFS, EGS andUFS ranges can be called up freeof charge. Regular updates andexpansionsmean that you alwayshave a comprehensive overview ofthe OBO products. All the currentfile formats PDF, DOC, GAEB,HTML, TEXT, XML, NORM areavailable.www.ausschreiben.de

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Contents, planning aids

Basic principles of surge voltage protection 6

Surge protection energy technology 19

Sure protection, photovoltaics 27

Surge protection of data and information technology 39

Protection and spark gaps 59


Equipotential bonding systems 67

Earthing systems 71

Interception and arrestor systems 77

Additional information 108

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Minor cause, major effect: Damage caused by surge voltages

Our dependency on electrical andelectronic equipment continues toincrease, in both our professionaland private lives. Data networks incompanies, for auxiliary equipmentin hospitals and fire departmentsfor example, are vital for the realtime transfer of information thathas long since been indispens-able. Sensitive databases, e.g. inbanks or media publishers, needreliable transmission paths. It isnot only lightning strikes that posea latent threat to these systems.More andmore frequently, today'selectronic aids are damaged bysurges caused by remote lightningdischarges or switching operationsin large electrical systems. Duringthunderstorms, too, high volumesof energy are instantaneously re-leased. These voltage peaks canpenetrate a building through all -manner of conductive connectionsand cause enormous damage.

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What are the consequences ofdamage caused by surges in ourdaily lives?The most obvious one is the de-struction of electrical equipment. Inprivate households, these arespecifically: TV/entertainment systems Telephone system Computer systems, stereo sys-

tems Kitchen appliances Monitoring systems Fire alarm systemsThe failure of such equipment cer-tainly incurs great expense. Whathappens when the following sufferoutage times/ and the possibleconsequential damage: Computers (loss of data), Heating/hot water systems, Lift,garage door and roller

shutter drives, Triggering or destruction of

fire/burglar alarm systems(costs from a false alarm)?

A vital topic perhaps, particularly in

office buildings, because: Can work continue in your

company without a centralcomputer/server?

Was all the important databacked up "in time"?

Growing sums of damageCurrent statistics and estimates ofinsurance companies show: Dam-age levels caused by surges ex-cluding consequential or outagecosts long since reached drasticlevels due to the growing depen-dency on electronic "aids". It's nosurprise, then, that property insur-ers are checking more and moreclaims and stipulating the use ofdevices to protect against surges.Information on protection mea-sures is contained, e.g. in DirectiveVDS 2010.

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Creation of lightning discharges

Creation of lightning discharges: 1 = approx. 6,000m, approx. 30 C, 2 = approx. 15,000m, approx. 70 C

Discharge typesSome 90% of all lightning dis-charges between a cloud and the-ground are negative cloud-earthstrikes. The lightning begins in anegatively charged area of thecloud and spreads to the positivelycharged surface of the earth. Addi-tional discharges are divided into: Negative earth-cloud strikes Positive cloud-earth strikes Positive earth-cloud strikes.Themost common discharges ac-tually occur within a cloud or be-tween different clouds.

Creation of lightning dischargesWhen warm, damp air massesrise, the air humidity condensesand ice crystals are formed at -great heights. Storm fronts can oc-cur when the clouds expand toheights of up to 15,000 m. Thestrong upwind of up to 100 kilo-metres per hour causes the lightice crystals to enter the higherarea and the sleet particles enterthe lower area. Knocks and frictioncause electrical discharge.

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Load distributionTypical load distribution: Positive at the top, negative in

the centre and weakly positiveat the bottom.

Positive charges can also befound in the area near the-ground.

The field strength required totrigger lightning is dependenton the insulating ability of theair and is between 0.5 and 10kV/cm.

Charge distribution: 1 = approx. 6,000m, 2 = Electrical field

Negative and positive charges: 1 = Sleet, 2 = Ice crystals

Negative and positive chargesStudies have proved that the sleetfalling down (area warmer than15 C) has a negative chargeand the ice crystals being thrownupwards (area colder than 15C) has a positive charge. Thelight ice crystals are carried intothe upper areas of the cloud bythe upwind and the sleet falls tothe central areas of the cloud. Thisdivided the clouds into the threeareas: Top: Positively charged zone Centre: Weakly negative

charged zone Bottom: Weakly positive

charged zoneThis separation of charges forms avoltage in the cloud.

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What are transient surges?

Transient surge voltages: 1 = Voltage drops/short interruptions, 2 = Harmonic waves due to slow and fast voltage changes, 3 = Temporary voltage in-creases, 4 = Switching surges, 5 = Lightning surges

Transient surge voltages are briefvoltage peaks lasting microsec-onds, whichmay be amultiple ofthe attached mains nominal volt-age.

The largest voltage peaks in thelow-voltage consumer network arecaused by lightning discharges.The high energy content of light-ning surges when a direct strikehits the external lightning protec-tion system or a low-voltage open-wire line usually causes withoutinternal lightning and surge protec-tion total outage of the connect-ed consumers and damage to theinsulation. Yet induced voltagepeaks in building installations and

energy or data cable supply ca-bles can also reach many timesthe nominal operating voltage.Switching surges, too, which infact do not cause such high volt-age peaks as lightning dischargesbut occur much more frequently,can result in immediate systemfailure. As a rule, switching surgesamount to twice to three times theoperating voltage, lightning surges,on the other hand, can sometimesreach 20 times the nominal volt-age value and transport a high en-ergy content. Often, failures occuronly after a time delay as the ag-ing process of electronic compo-nents in the affected devices trig-gered by smaller transient surges

causes insidious damage.A num-ber of different protection mea-sures are required. These dependon the exact cause and/or impactpoint of the lightning discharge.

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What pulse forms are there?

Pulse types and their characteristics: Yellow = pulse shape 1, direct lightning strike, 10/350 s simulated lightning pulse, red = pulse shape 2, remotelightning strike or switching operation, 8/20 s simulated lightning pulse (Surge)

High lightning currents can flow tothe ground during a storm. If abuilding with external lightning pro-tection receives a direct hit, a volt-age drop occurs on the earthingresistor of the lightning protectionequipotential bonding system,which represents a surge voltageagainst the distant environment.This rise in potential poses a threatto the electrical systems (e.g. volt-age supply, telephone systems,cable TV, control cables, etc.) thatare routed into the building.Suitable test currents for testingdifferent lightning and surge pro-tectors have been defined in na-tional and international standards.

Direct lightning strike: Pulseshape 1Lightning currents that can occurduring a direct lightning strike canbe imitated with the surge currentof wave form 10/350 s. The light-ning test current imitates both thefast rise and the high energy con-tent of natural lightning. Lightningcurrent arrestor Type 1 and exter-nal lightning protection compo-nents are tested using this current.

Remote lightning strikes orswitching operations: Pulseshape 2The surges created by remotelightning strikes and switching op-erations are imitated with test im-pulse 8/20 s. The energy contentof this impulse is significantly low-er than the lighting test current ofsurge current wave 10/350 s.Surge arrestor Type 2 and Type 3are impacted with this test im-pulse.

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Causes of lightning currents

Direct lightning strike into a low-voltage open-wire lineA direct lightning strike into a low-voltage open wire line or data ca-ble can couple high partial lightingcurrents in an adjacent building.Electrical equipment in buildings atthe end of the low-voltage open-wire line are at particular risk ofdamage caused by surges.

Threat value: Up to 100 kA(10/350)

Direct lightning strike into abuildingIf a lightning strike hits the externallightning protection system orearthed roof structures capable ofcarrying lightning current (e.g. roofaerial), then the lightning energycan be arrested to the ground inadvance. However, a lightning pro-tection system on its own is notenough: Due to its impedance, thebuilding's entire earthing system israised to a high potential. This po-tential increase causes the light-ning current to spilt over the build-ing's earthing system and alsoover the power supply systemsand data cables to the adjacentearthing systems (adjacent build-ing, low-voltage transformer).

Threat value: Up to 200 kA(10/350)

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Causes of surges

Coupling of surges through localor remote lightning strikeEven if lightning protection andsurge protectionmeasures are al-ready installed: A local lightningstrike creates additional highmag-netic fields, which in turn inducehigh voltage peaks in line systems.Inductive orgalvanic coupling cancause damage within a radius ofup to 2 km around the lightningimpact point.

Threat value: Several kA (8/20)

Switching surges in the low-volt-age systemSwitching surges are caused byswitch-on and switch-off opera-tions, by switching inductive andcapacitive loads and by interrupt-ing short-circuit currents. Particu-larly when production plants, light-ing systems or transformers areswitched off, electrical equipmentlocated in close proximity can bedamaged.

Threat value: Several kA (8/20)

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Gradual surge reduction with lightning protection zones

Lightning protection zone con-ceptThe lightning protection zone con-cept described in internationalstandard IEC 62305-4 (DIN VDE0185 Part 4) has proved to bepractical and efficient. This con-cept is based on the principle of -gradually reducing surges to asafe level before they reach theterminal device and cause dam-age. In order to achieve this situa-tion, a building's entire energy net-work is split into lightning protec-tion zones (LPZ = Lightning Protec-tion Zone). Installed at each transi-

tion from one zone to another is asurge arrestor for equipotentialbonding. These arrestors corre-spond to the requirement class inquestion.

Lightning protection zone

LPZ 0 A Unprotected zone outside the building. Direct lightning impacts, no shielding against electromagnetic interferencepulses LEMP (Lightning Electromagnetic Pulse)

LPZ 0 B Zone protected by external lightning protection system. No shielding against LEMP.

LPZ 1 Zone inside the building. Low partial lightning energies possible.

LPZ 2 Zone inside the building. Low surges possible.

LPZ 3 Zone inside the building (can also be the metal housing of a consumer). No interference pulses through LEMP orsurges present.

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Zone transitions and protective devices

Benefits of the lightning protec-tion zone concept Minimisation of the couplings

into other cable systemsthrough arresting the energy-rich, dangerous lightning cur-rents directly at the point thecables enter the building.

Malfunction prevention with-magnetic fields.

Economic, well-plannable indi-vidual protection concept fornew and old buildings and re-constructions.

Type classes of the surge protec-tion devicesOBO surge protection devices areclassified in accordance with DINEN 61643-11 into three type class-es Type 1, Type 2 and Type 3(previously B, C and D). Thesestandards contain building regula-tions, requirements and tests forsurge arrestors used in AC net-works with nominal voltages of upto 1,000 V and nominal frequen-cies of between 50 and 60 Hz.This classification enables ar-restors to bematched to differentrequirements with regard to loca-tion, protection level and current-carrying capacity. The table belowprovides an overview of the zonetransitions. It also shows whichOBO surge protectors are to be in-stalled in the energy supply net-work and their respective function.

Zone transitions

Zone tran-sition LPZ0 B to LPZ1

Protection 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 entry

Zone tran-sition LPZ1 to LPZ 2

Protection 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, subdistributor

Zone tran-sition LPZ2 to LPZ 3

Protection 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 consumer

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BET testing centre for lightning protection, electrical engineering andsupport systems

Lightning current test

BET with countless tasksIf only lightning current, environ-mental and electrical testing waspossible at BET up to now, theBET Test Centre is now a compe-tent partner for testing of cablesupport systems. This combinationhas made it necessary to revisethe meaning of the name. If BETpreviously stood for "Blitzschutz-und EMV-Technologiezentrum"(Lightning protection and EMCtechnology centre), since 2009these letters havemeant BET Testcentre for lightning protection,electrical engineering and supportsystems.

Test generator for lightning cur-rent testsThe test generator, planned in1994 and built in 1996, allows theexecution of lightning current testsof up to 200 kA. The generatorwas planned and constructed inconjunction with the Soest Techni-cal College. Due to the intensive

planning and scientific consultationrequired in the construction of thetesting system, this system hasworked without fault for 12 yearsand still meets the current stan-dard testing requirements.Themain load of the testgenera-tor is generated by the testing ofproducts from the TBS productunit. Here, tests to accompany de-velopment are carried out on newdevelopments,modifications of ex-isting OBO products and alsocomparison tests on competingproducts. These include lightningprotection components, surge pro-tection devices and lightning cur-rent arrestors. Tests of lightningprotection components are carriedout according to DIN EN 50164-1,those for sparkgaps according toDIN EN 50164-3 and those forlightning and surge protection de-vices according to DIN EN 61643-11. This is just a small portion ofthe testing standards used fortests in the BET Test Centre.

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Lightning currentgenerator Salt spray trough Load test

Testing types for lightning andsurge protectionBoth lightning current tests andsurge voltage tests can be carriedout at up to 20 kV.A hybridgener-ator is used for these tests, whichwas also developed as part of acooperation with the Soest Techni-cal College. EMC testing of cablesupport systems can also be car-ried out using this test generator.All kinds of cable routing and ca-ble support systems of up to 8mlength can be tested without anydifficulties. Tests for electrical con-ductivity according to DIN EN61537 are also carried out.

Simulation of real environmentalconditionsTo carry out standardised tests oncomponents intended for externaluse, they must be pretreated un-der real environmental conditions.This takes place in a salt spraytrough and a sulphur dioxide test-ing chamber. Depending on thetest, the test length and the con-centration of the salt spray or sul-phur dioxide in the testing cham-bersmay vary. Thismeans that itis possible to conduct tests ac-cording to IEC 60068-2-52, ISO7253, ISO 9227 and EN ISO6988.

Testing cable support systemsThe well-known KTS testing sys-tem, newly installed in the BETTest Centre, allows the investiga-tion of the load capacities of anycable support system manufac-tured by OBO. The basis for this isDIN EN 61537 and VDE 0639.In the BET Test Centre, OBO Bet-termann has a testing departmentin which products can be testedaccording to standards, even dur-ing the development phase.

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Contents, surge protection energy technology

Standards, surge protection 20

Installation instructions 21

4-cable networks 22

5-cable networks 23

Selection aid, energy technology 24

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Standards, surge protection

You must take various standardsinto account when erecting surgeprotection. You can find the mostimportant European regulationshere.DIN VDE 0100-410:2007(IEC 60364-4-41:2005)Low-voltage electrical installations Part 4-41: Protection for safety protection against electric shock.

DIN VDE 0100-540:2007(IEC 60364-5-54:2002)Low-voltage electrical installations Part 5-54: Selection and erectionof electrical equipment earthingarrangements, protective conduc-tors and protective bonding con-ductors

DIN VDE 0100-443:2007Low-voltage electrical installations Part 4-44: Protection for safety protection against voltage distur-

bances and electromagnetic dis-turbances Clause 443: Protec-tion against surge voltages of at-mospheric origin or due to switch-ing

DIN VDE 0100-534:2009Low-voltage electrical installations Part 5-53: Selection and erectionof electrical equipment isolation,switching and control Clause534: Devices for protectionagainst surge voltages

DIN EN 61643-11:2007(IEC 61643-1)Low-voltage surge protective de-vices Part 11: Surge protectivedevices connected to low-voltagepower systems requirementsand tests

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Installation instructions

Length of the feed line, 1 = Equipotential bond-ing rail or terminal or protective conductor rail

V wiring, 1 = Protective conductor rail, 2 =Main equipotential bonding rail or terminal

1= Power supply, 2 = Cable length, 3 = Con-sumer, 4 = Response voltage 2 kV, e.g. MC50-B VDE 5 = Response voltage 1.4 kV, e.g.V20 C

Connection length, V-wiringThe connection cable to the pro-tector is crucial for achieving anoptimum protection level. In accor-dance with IEC installation direc-tives, the length of the branch lineto the arrestor and the length ofthe line from the protection de-vice to the equipotential bondingshould in each case be less than0.5 m. If the cables are longerthan 0.5m, then V-wiringmust bechosen.

DecouplingLightning current and surge ar-restors perform a number of func-tions. These arrestors must beused in coordination. This coordi-nation is guaranteed by the exist-ing line length or special lightningcurrent arrestors (MCD series). Forexample, in the protection set,Type 1 and Type 2 arrestors(Classes B and C) can be usedadjacent to each other.

Example cable length > 5 m No additional decoupling re-

quired

Example cable length < 5 m Use decoupling: MC 50-B VDE

+LC 63 +V20-C Alternatively: MCD 50-B +V20-

C, no additional decoupling re-quired (e.g. protection set)

Minimum cross-sections for thelightning protection equipotentialbonding systemThe following minimum cross-sec-tions should be observed for light-ning protection equipotential bond-ing: For copper, a cable cross-sec-tion of 16 mm2, for aluminium25 mm2 and for iron 50 mm2. Atthe lightning protection zone transi-tion from LPZ 0 to LPZ 1, allthe metallic installations must beincluded in the equipotential bond-ing. Active lines must be earthedusing suitable arrestors.

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4-cable networks, TN-C network system

1 = Main distributor, 2 = Cable length, 3 = Circuit distributor, e.g. subdistributor, 4 = Fine powerprotection, 6 = Main EBS, 7 = Local EBS, 8 = Type 1, 9 = Type 2, 10 = Type 3

In the TN-C-S network system, theelectrical unit is supplied throughthe three external lines (L1, L2, L3)and the combined PEN line.Usage is described in DIN VDE0100-534 (DIN EN 61643-11).

Lightning current arrestor Type 1Type 1 lightning current arrestorsare used in the 3-pole circuit (e.g.:3x MC 50-B). The connection is ef-fected parallel to the external lines,which are connected to the PENvia the arrestor. Following consul-tation with the local energyprovider and in accordance withthe VDN Directive, use before the-main meter device is also possi-ble.

Surge arrestor, type 2Surge arrestors of Type 2 are usu-ally used after the split in the PENline. If the split ismore than 0.5maway, the network from here on-wards is 5-line. The arrestors areused in the 3+1 circuit (e.g. V20-C3+NPE). With the 3+1 circuit, theexternal lines (L1, L2, L3) are con-

nected to the neutral cable (N) viaarrestors. The neutral cable (N) isconnected to the protective earthvia a collective sparkgap. The ar-restors must be used before aresidual current protective device(RCD), as it would otherwise inter-pret the surge current as a residu-al current and interrupt the powercircuit.

Surge arrestor, type 3Surge arrestors of Type 3 are usedto protect against surges in the de-vice power circuits. These trans-verse surges occur primarily be-tween L and N.A Y circuit protectsthe L and N lines with varistor cir-cuits and makes the connectionsto the PE line through a collectivesparkgap (e.g.: KNS-D). This pro-tection circuit between L and Nprevents surge currents fromtransverse voltages being conduct-ed towards PE, the RCD thus inter-prets no residual current. The rele-vant technical data is contained onthe product pages.

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5-cable networks, TN-S and TT network system

1 = Main distributor, 2 = Cable length, 3 = Circuit distributor, e.g. subdistributor, 4 = Fine powerprotection, 6 = Main EBS, 7 = Local EBS, 8 = Type 1, 9 = Type 2, 10 = Type 3

In the TN-S network system, theelectrical unit is supplied throughthe three external lines (L1, L2,L3), the neutral cable (N) and theearth cable (PE). In the TT net-work, however, the electrical unit issupplied through the three externallines (L1, L2, L3), the neutral cable(N) and the earth cable (PE).Usage is described in DIN VDE0100-534 (DIN EN 61643-11).

Lightning current arrestor Type 1Type 1 lightning current arrestorsare used in the 3+1 circuit (e.g. 3xMC 50-B and one MC 125-BNPE). With the 3+1 circuit, the ex-ternal lines (L1, L2, L3) are con-nected to the neutral cable (N) viaarrestors. The neutral cable (N) isconnected to the protective earthvia a collective sparkgap. Follow-ing consultation with the local en-ergy provider and in accordancewith the VDN Directive, use beforethemainmeter device is also pos-sible.

Surge arrestor, Type 2Surge arrestors of Type 2 are usedin the 3+1 circuit (e.g.: V20-C3+NPE). With the 3+1 circuit, theexternal lines (L1, L2, L3) are con-nected to the neutral cable (N) viaarrestors. The neutral cable (N) isconnected to the protective earthvia a collective sparkgap. The ar-restors must be used before aresidual current protective device(RCD), as it would otherwise inter-pret the surge current as a residu-al current and interrupt the powercircuit.

Surge arrestor, Type 3Surge arrestors of Type 3 are usedto protect against surges in the de-vice power circuits. These trans-verse surges occur primarily be-tween L and N.A Y circuit protectsthe L and N lines with varistor cir-cuits andmakes the connection tothe PE line through a collectivesparkgap (e.g. KNS-D). This pro-

tection circuit between L and Nprevents surge currents fromtransverse voltages being conduct-ed towards PE, the RCD thus inter-prets no residual current. The rele-vant technical data is contained onthe product pages.

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Selection aid, energy technology

TN/TT network systems TN/TT network systems TN/TT network systems

No external lightning protection system Earthing cable connection Private building, e.g. single-family house

No external lightning protection system Earthing cable connection Multi-family homes, industry commerce

External lightning protection system Open-wire connection Earthed antenna structures Lightning protection class III and IV

Installation location 1(Main distributor, Type 1/Type 2)V10 CompactType 2/Type 3Art. no.: 5093380Other versions available

Installation location 1(Main distributor, Type 1/Type 2)V20-C 3 +NPEType 2Art. no.: 5094656Other versions available

Installation location 1(Main distributor, Type 1/Type 2)V50 B+C 3+NPEType 2/Type 3Art. no.: 5093654Other versions available

Installation location 2(Sub-distributor Type 2)Not required

Installation location 2Distance betweenmain distributor box andsub-distributor box isgreater than 10m, Type 2V20-C 3 +NPEType 2Art. no.: 5094656Other versions available

Installation location 2Distance betweenmain distributor box andsub-distributor box isgreater than 10m, Type 2V20-C 3 +NPEType 2Art. no.: 5094656Other versions available

Installation location 3(In front of a Type 3 terminal)e.g. FineController FC-DType 3Art. no.: 5092800Other versions available

Installation location 3(In front of a Type 3 terminal)e.g. CNS-3-DType 3Art. no.: 5092701Other versions available

Installation location 3(In front of a Type 3 terminal)e.g. KNS-3-DType 3Art. no.: 5092057Other versions available

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TN-S/TT network systems TN-C network systems TN-S/TT network systems

External lightning protection system Open-wire connection Earthed antenna structures Lightning protection class I to IV (e.g.

industrial building, computer centres andhospitals)





Installation location 1(Main distributor, Type 1/Type 2)MC 50-B/3+1, Type 1Art. no: 5096878Other versions available



Installation location 2Distance betweenmain distributor box andsub-distributor box isgreater than 10m, Type2V20-C 3 +NPE, Type 2Art. no.: 5094656Other versions available



Installation location 3(In front of a Type 3 terminal)e.g. V10 Compact, Type 2, Type 3Art. no.: 5093380Other versions available

Installation location 3(In front of a Type 3 terminal)e.g. VF 230-AC/DC, Type 3Art. no.: 5093380Other versions available

Installation location 3(In front of a Type 3 terminal)e.g. V10 Compact, Type 3Art. no.: 5092451Other versions available

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Contents, lightning and surge protection, photovoltaics

Standards, photovoltaics 28

Statutory requirements and insurance requirements 29

Sunny outlooks photovoltaics 30

Lightning protection equipotential bonding system and sepa-ration distance

31

Rolling sphere method 32

Protective angle method 33

Cable routing, cable support and fire protection systems 34

Installation principle, housing 35

Installation principle, industrial and commercial building 36

Installation principle, outdoor system 37

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Standards, photovoltaics

Various standards must be com-plied with when erecting a photo-voltaic system. You can find the -most important European regula-tions here.DIN EN 62305-1(IEC 62305-1:2006):2006-10Protection against lightning Part1: General principles

DIN EN 62305-2(IEC 62305-2:2006):2006-10Protection against lightning Part2: Riskmanagement

DIN EN 62305-3(IEC 62305-3:2006):2006-10Protection against lightning Part3: Physical damage to structuresand life hazard

DIN EN 62305-4(IEC 62305-4:2006):2006Protection against lightning Part4: Electrical and electronic sys-tems within structure

DIN EN 62305-3 Bbl 5(VDE 0185-305-3 Bbl 5):2009-10Protection against lightning Part3: Physical damage to structuresand life hazard Supplement 5:Lightning and surge voltage pro-tection for photovoltaic power sup-ply systems

DIN EN 61643-11(IEC 61643-1)Low-voltage surge protective de-vices Part 11: Surge protectivedevices connected to low-voltagepower systems

DIN VDE 0100-534(IEC 60364-5-534)Part 5-53: Selection and erectionof electrical equipment isolation,switching and control Clause534: Devices for protectionagainst surge voltages

DIN VDE 0100-443(IEC 60364-4-44)low-voltage electrical installations Part 4-44: Protection for safety protection against voltage distur-bances and electromagnetic dis-turbances Clause 443: Protec-tion against surge voltages of at-mospheric origin or due to switch-ing

VDE 0100-712(IEC 60364-7-712):2006-06Requirements for solar photovolta-ic (PV) power supply systems

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Statutory requirements and insurance requirements

Besides the current standards,the general statutory conditionsand the requirements of the in-surance companies must be tak-en into account. Please also ob-serve the appropriate local legalrequirements.

Statutory requirementsState construction regulations(LBO): Irrespective of a PV system,certain buildings require an exter-nal lightning protection system.Buildings requiring lightning pro-tection by law include high-risebuildings, hospitals, schoolsandmeeting places.

Insurance requirements: VdS di-rective 2010 for risk-orientatedlightning and surge voltage pro-tectionPV systems larger than 10 kW re-quire a lightning protection systemof class III and internal surge pro-tection. Freestanding PV systems requiresurge protection measures andequipotential bonding.

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Sunny outlooks Photovolatic solutions from OBO

Nowadays, the solar sector is abooming part of the electrical in-dustry. Because every investorsees a correlation between sys-tem function and claw-back time,protection against lightning andsurge voltages plays a key role.Protection of the converterThe current inverter is the heart ofthe plant and seriously exposed tocouplings from surge impulses.The couplings can be dampenedusing lightning protection, earthing,equipotential bonding and shield-ingmeasures and through correctcable routing. Damage to photo-voltaic systems can have variouscauses:

Damage from galvanic couplingPartial lightning currents flowthrough parts of the PV systemandgenerated voltages of severalhundred thousand volts.

Damage through magnetic fieldcouplingLightning currents couple surgesthrough magnetic induction. Dis-tance reduces the coupling.

Damage through electrical fieldcouplingSurges through the electrical fieldof the lightning current. Comparedto themagnetic field coupling, thecouplings are very small.

Lightning protection for PV pow-er supply systemsA lightning protection system ofprotection class IIImeets the nor-mal requirements for PV systemsin DIN EN 62305-3, Supplement 5(VDE 0185-305-3 Supplement 5):2009. In addition, a lightning pro-tection class calculation can be -made according to DIN EN 62305(IEC 62305).

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Lightning protection equipotential bonding system and separation dis-tance

Figure 1: Separating distance (s) between the lightning protection system and cable support sys-tem

Figure 2: Separation distance (s) between thePV and the lightning protection system

Important measuresThe following pointsmust be takeninto account in order to ensurecomprehensive protection of thePV system: The local earthing (EBS)must

be connected to themainequipotential bonding systems(MEBS).

Equipotential bonding conduc-torsmust be routed closelyand in parallel to the DC ca-bles.

Data cablesmust be includedin the protection concept.

Table 1 provides an overview ofthe protectivemeasures.

Separation distanceAccording to DIN EN 62305, thelightning protection system mustbe erected at a separation dis-tance (s) from the parts of the PVsystem. Usually, a separation dis-tance (s) (= safety distance) of0.5m to 1m is sufficient.

Table 1: Overview of the protective measures

External lightningprotection available Measure

Separation spacing accordingto DIN EN 62305 maintained

Equipoten-tial bonding

Surge pro-tection

YesAdjusting the lightning protection sys-tem according to DIN EN 62305

Yes min. 6 mm DC: Type 2AC: Type 1

YesAdjusting the lightning protection sys-tem according to DIN EN 62305

Nomin. 16 mm DC: Type 1

AC: Type 1

NoTesting of the requirements: Stateconstruction regulations, VdS 2010,risk analysis, etc.

- min. 6 mm DC: Type 2AC: Type 2

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Rolling sphere method

Figure 1: Planningmethod: Rolling sphere (R), rolling spheremethod and penetration depth (p)and spacing of the interception rods (d)

The methodAs ageometric electricmodel, thelightning globe method isamethod of testing the protectionarea against a direct lightningstrike. An actualglobe is unrolledon amodel of the system, in whichall the contact points representpoints of direct lightning strikes.

Protect photovoltaic systemswith several interception rodsIf you use several interception rodsto protect an object, youmust takeinto consideration the penetrationdepth between them. Table 2 pro-vides an overview of this.

Table 2: Penetration depth by lightning protection class according to VDE 0185-305

Distance of in-terception sys-tem (d) in m

Penetration depth, light-ning protection class ILightning protectionsphere: R=20 m

Penetration depth, light-ning protection class IILightning protectionsphere: R=30 m

Penetration depth, light-ning protection class IIILightning protectionsphere: R=45 m

Penetration depth, light-ning protection class IVLightning protectionsphere: R=60 m

2 0.03 0.02 0.01 0.01

3 0.06 0.04 0.03 0.02

4 0.10 0.07 0.04 0.04

5 0.16 0.10 0.07 0.05

10 0.64 0.42 0.28 0.21

15 1.46 0.96 0.63 0.47

20 2.68 1.72 1.13 0.84

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Protective angle method

Figure 2: = Lightning protection angle Figure 4: 1 = = Lightning protection angle, 2= Parapet height, 3 = Lightning protectionclass

Figure 3: Protection angle (), parapet cable

The methodThe protection angle method canbe used for interception rods,parapet cables and buildings. Thearea protected against a directlightning strike is dependent onthe protection class and the heightof the interception unit.

ExampleA 10 m high parapet interceptioncable offers a protection angle of60. The separation distance be-tween the PV and the lightningprotection systemsmust bemain-tained.

Step 1: Test the separation dis-tanceIf the required separation distancecannot be maintained, thenthe metallic parts must be inter-connected in order to deal withlightning currents.

Step 2: Check protective mea-sures according to table 1Example: Lightning current ar-restors (Type 1) for lightning pro-tection equipotential bonding areused on the DC and the AC side.

Step 3: Inclusion of data cablesData cablesmust be included inthe protection concept.

Step 4: Provision of equipotentialbondingLocal equipotential bonding shouldbe provided on the inverter.

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Cable routing, cable support and fire protection systems

Figure 5: Separation distance (s) between cable duct and lightning interception unit

Cable routing Close, parallel cable rout-

ingminimised coupling. Cables, shielded to carry light-

ning current, divides up thelightning current.

Interceptor and arrestor ca-blesmust be routed at a sepa-ration distance to PV systems(Figure 5).

Cable support systems Metallic cable traysminimise

couplings. Closed systems with lids re-

duce the UV load of the cablesin outdoor loads.

The separation distanceshould bemaintained betweenthe cables of the PV systemand the lightning protectionsystem.

Fire protection systems Public buildings have very high

fire protection requirements. OBO insulation systems can

offer the proper protectionagainst the spread of fire,smoke and heat.

OBO fire protection systemscan offer cable routing withtested safety, especially inemergency and escape routes.

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Installation principle, housing

System components

1 Intercepting device and arrestor system

2 Surge arrestor for AC energy technology

3 Surge arrestor for data technology

4 Lightning current and surge arrestor for DC photovoltaic systems

5 Equipotential bonding system

6 Arresting cable to earthing system

7 Cable routing system

8 Installation solutions

9 Construction fire protection

PV systems are an interesting in-vestment for private investors.However, amortisation of the PVsystem may be delayed throughdamages and lack of income.Proper installation and cable rout-ing as well as lightning and surgeprotection measures increase theavailability of the system.

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Installation principle, industrial and commercial building

System components


2 Surge arrestor for AC energy technology




6 Earthing system



9 Construction fire protection

PV systems are a very interestinginvestment for commercial in-vestors. For systems > 10 kW, in-surers require an external lightningprotection system of Class III toDIN EN 62305 (IEC 62305) withsurge protection and equipotentialbondingmeasures. Proper installa-tion and cable routing as well aslightning and surge protec-tion measures increase the avail-ability of the system andguaranteethe income of the PV system.

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Installation principle, outdoor system

System components





5 Earthing system



In freestanding systems, deepearthers down to the depth of thepermafrost are ineffective. A lowearthing resistance (less than 10,measured as a low frequency)is recommended. With earthingsystems, a loop size of 20 m x20 m up to 40 m x 40 m hasproved effective. Themetallic sup-porting tables and framesmust beinterconnected. In addition, surgeprotection devicesmust be used.

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Contents, surge protection device for data and information technology

Standards, data and information technology 40

Important terms and basic principles 41

Network topologies 42

Installation instructions, lightning barriers 44

Limit frequency and installation instructions 46

Equipotential bonding of data cables 47

Terms and explanations on PC interfaces 48

Selection aids, surge protection 50

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Standards, data and information technology

Various standards have a role toplay in the area of data andtelecommunications technology.All kinds of standards must betaken into account, from buildingstructure cabling, throughequipotential bonding through toEMC. Some of the most importantare listed here.IEC 61643-21:2000-09Low voltage surge protective de-vices Part 21: surge protectivedevices connected to telecommu-nications and signalling networks performance requirements andtestingmethods

DIN EN 50173-1:2007Information technology genericcabling systems Part 1: Generalrequirements

DIN VDE 0845-1:1987-10Protection of telecommunicationsystems against lightning, electro-static discharges and surge volt-ages from electric power installa-tions; provisions against surgevoltages

DIN VDE 0845-2:1993-10Protection of data processing andtelecommunications equipmentagainst the impact of lightning, dis-charge of static electricity andsurge voltages from heavy currentsystems requirements and tests

of surge voltage protection de-vices

DIN EN 50310:2006(VDE 0800-2-310)Application of equipotential bond-ing and earthing in buildings withinformation technology equipment

EN 61000-4-5:2007(VDE 08457-4-5)Electromagnetic compatibility(EMC) Part 4-5: Testingand measurement techniques surge immunity test

EN 60728-11(VDE 855-1:2005-10)Cable networks for television sig-nals, sound signals and interactiveservices Part 11: Safety (IEC60728-11:2005)

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Important terms and basic principles

1 = power lines, 2 = data lines, 3 = item to be protected, LPZ = Lightning Protection Zone

Basic principlesToday, communication and IT sys-tems form the lifeblood of almostevery company. In the worst-casescenario, voltage surges, causedbygalvanic, capacitive or inductivecouplings in data cables, can de-stroy IT and telecommunicationsequipment within a network. Toavoid such failures, suitable pro-tection measures must be under-taken. Due to a wide range of current in-formation, telecommunicationandmeasurement systems, the se-lection of the right surge protectiondevice is often difficult in practice.The following factorsmust be tak-en into account: The connection system of the

protection devicemustmatchthe device to be protected.

Parameters such as the high-est signal level, highest fre-quency,maximum protectionlevel and the installation envi-ronmentmust be taken intoaccount.

The protection devicemay on-ly have aminor impact ontransmission route, such as at-tenuation and reflection.

Protection principleA device is only protected againstsurges if all energy and data ca-bles connected to the device areintegrated into the equipotentialbonding system at the lightningprotection zone transitions. OBOBettermann offers a completerange of tried-and-tested, highlyfunctional and reliable data cableprotection devices for all standardtelecommunication and informationtechnology systems.

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Network topologies

Star networksIn a star network, every worksta-tion is supplied by a separate ca-ble from a central star point (HUBor Switch). Typical applications are10BaseT and 100BaseT.

1 = Server, 2 = Switch/Hub

1 = IT devices, 2 = Surge protection devices

Bus networksIn a bus network, all the users areconnected in parallel. At its end,the bus must have an anechoicclosure. Typical applications are10Base2, 10Base5 and machinecontrollers such as PROFIBUS andtelecommunications systems suchas ISDN.

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Network topologies and connection types

Ring networkIn a ring network, every worksta-tion is connected to precisely onepredecessor and one successorvia a ring-shaped network. If onestation fails, the entire networkfails. Ring networks are used inWLAN applications and TokenRing applications.

Telephone systemsInmany cases,modern telephonesystems also act as interfaces fora number of different data ser-vices, e.g. the Internet. Many termi-nal devices that enable this accessare connected into the lines them-selves andmust be integrated intothe surge protection concept ac-cordingly. As there are now a num-ber of different systems, these de-vices must have selective protec-tion. There are three distinctly dif-ferent essential systems:

Standard analogue connectionUnlike other systems, the standardanalogue connection offers no ad-ditional services. One or severaltelephones are wired in a star-shape and ring simultaneouslywhen a call comes in. Access tothe Internet is via a separate mo-dem. Because the analogue con-nection without technical acces-sories provides only one channel,the Internet cannot be accessedwhile telephoning and likewise, notelephone call is possible whilesurfing.

ISDN (Integrated Services DigitalNetwork System)In contrast to the analogue con-nection, ISDN allows two conver-sations to take place at the sametime via a special bus system (S0bus), which provides two channels.This enables the user to surf onthe Internet while telephoning andat higher data rates than is possi-ble with the analogue connection(64 kBit/s over one channel).ISDN also offers other servicessuch as call-waiting, call-back, etc.

DSL system (Digital SubscriberLine)Today, the most commonly usedsystem is the DSL system. Speech

and data channels are separatedby splitters and the data channel isrouted to a special modem(NTBBA), which is connected tothe PC via a network card. DSLdata rates are higher than those ofanalogue and ISDN systems andtherefore enable fast downloadingofmusic and films from the Inter-net. Because there are a numberof different DSL versions such asA-DSL and S-DSL, thegeneral DSLis also designated X-DSL. X-DSLpermits the use of analogue tele-phones without additional hard-ware, as well as a combinationwith ISDN.

The number of wires varies according to the network type. 1 = Server, 2 = Ground floor, 3 = 1stfloor

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Installation instructions, lightning barriers

FRD2/FLD2Type FRD2 and FLD2 are intendedfor use inground-referenced (sym-metrical, potential-referenced) sin-gle-wire systems.

Earth-referenced systems aresignal circuits that have a com-mon reference potential withother signal circuits. In thesesystems, two further data cablesbesides earth are protected. Thedecision to use FRD (with resis-tive decoupling) or FLD (with in-ductive decoupling) depends onthe system to be protected.

Circuit diagram of the lightning barrier FRD2/FLD2

Circuit diagram of the lightning barrier FRD/FLD

FRD/FLDLightning barriers TKS-B, FRD,FLD, FRD 2 and FLD 2 protectelectronic measuring, controllingand regulating systems fromsurges. Lightning barriers of typeMDP are used in areas requiringparticularly small installation widthswith simultaneously high numbersof poles.

Type FRD, FLD and MDP light-ning barriers are designed foruse in so-called floating (asym-metrical, potential-free) two-coresystems. These are systemswhose signal circuits have nocommon reference potential withother signal circuits, e.g. 20 mAcurrent loops. These devicescan be used universally.

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Lightning barriers in measurement circuits and terms for HF technology

Lightning barriers inmeasuring circuit, 1 = Earth, 2 R/L

Use of lightning barriers in mea-suring circuitsBefore lightning barriers are usedin measuring circuits, it must firstbe confirmed whether a resistanceincrease is permitted. Dependingon the decoupling, resistance in-creases in the measuring circuitscan occur with types FRD andFRD2. This can result in errorswith current loop measurements.FLD/FLD2 and/or MDP devicesshould therefore be used in thiscase. Themaximum operating cur-rent should also be verified to en-sure that the dissipated energydoes not cause thermal destruc-tion of the decoupling elements.

Insertion lossInsertion loss describes the damp-ing of a system from input to out-put. It shows the transfer functionof the system and accommodatesthe 3dB point (see figure Limit fre-quency).

Return lossThis parameter indicates in dBhowmuch input power is reflectedback. In 50 systems, these val-ues are around 20 db. This valueis important for antenna systems.In the case of arrestors with inte-grated inductivities for decoupling,the signal is damped at high trans-fer frequencies. Therefore, whenused in measuring circuits withhigh transfer frequencies, lightningbarriers with resistive decouplingelements are the preferred solu-tion.

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Terms for HF technology and installation instructions

Installation instructionsThe surge protection device mustbe connected as close as possibleto the device to be protected. Thehousing of the device to be pro-tected should if necessary be de-fined as a local earthing point. Inaddition, care should be taken toensure short PE line distancesfrom surge protection device toearthing point (housing) linelengthmax. 0.5m.

Installation instructions: 1 = ISDN, 2 = Net Defender

Limit frequency, 1 = |A|, 2 = 3 dB, 3 = fg, 4 = f

Cut-off frequency fg

The cut-off frequency fg describes

the frequency-dependent behav-iour of the arrestor. Capacitiveand/or inductive component prop-erties ensure signal damping athigher frequencies. The criticalpoint is described as the cut-offfrequency f

g. From this point on-

wards, the signal has lost 50% (3dB) of its input power. The cut-offfrequency is determined accordingto certainmeasuring criteria. Usu-ally, in the absence of any values,the cut-off frequency relates to so-called 50 systems.

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Equipotential bonding of data cables

1 Device to be protected / telecom line

2 Direct connection to equipotential bonding (preferred)

3 Gas discharge arrestor (indirect shielding)

4 Gas discharge arrestor

5 Connection to equipotential bonding

6 Equipotential bonding rail

7 Telecommunications cable

8 Electrical power cable

9 Surge protection device (energy technology)

10 Conductive shield of the data cable

Equipotential bonding of data ca-blesIn contrast to energy technology,data technology has lengthwiseand transverse voltages, which -must be minimised using suitablearrestors with voltage-limiting com-ponents.To achieve low protection levels,these surge protection devices -must be included in the equipoten-tial bonding via the shortest route.Long cable routes should beavoided. The best solution is localequipotential bonding.The inclusion of the shields is alsoof key importance. Completeshield action against capacitiveand inductive coupling can only beeffective when the shield is includ-ed with low impedance on bothsides in the equipotential bonding.

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Terms and explanations for PC interfaces

1 = Date cable, 2 = 230 V

Do not forget: Surge protectionexists only when data and energylines are protected!InterfacesExternal devices such as printers,scanners and control systems acti-vated via serial or parallel inter-facesmust be additionally integrat-ed into the surge protection con-cept. There are a range of inter-faces for different applications:from bus lines for telecommunica-tion and data transfer through tosimple terminal devices such asprinters or scanners. OBO also of-fers a host of protective devicesthat are simple to install, depend-ing on the particular application.

RS232 interfaceThe RS232 is a frequently used in-terface. It is often used, for exam-ple, formodems and other periph-erals. Although now largely re-placed by the USB interface, TheRS232 standard is still frequentlyused for control cables.

RS422The RS422 is a serial high-speedstandard suitable for communica-tion between a maximum of tenusers, which is designed as a bus.The system can be designed fora maximum of eight data cables,

although two are always used assend and receive cables.

RS485 interfaceThe RS485 industrial bus interfacediffers slightly from the RS422 inthat the RS485 enables the con-nection of several transmitters andreceivers (up to 32 users) via aprotocol. The maximum length ofthis bus system, when twisted-paircables are used, is approx. 1.2 kmwith a data rate of 1 MBit/s (de-pendent upon serial controllers).

TTY systemUnlike the RS-232 or other serialinterfaces, the TTY system is notvoltage-controlled instead it de-livers an imposed current (0/4-20mA). This enables line lengthsof up to several hundredmetres tobe realised.

V11 interfaceV11 is the German designation forthe RS422. The American nomen-clature, however, is themost wide-ly used.

V24 interfaceV24 is the German designation forthe RS232. The American nomen-clature, however, is themost wide-ly used.

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The SD adapters are installed sim-ply by plugging-in between datacable and device to be protected.Using screwless clamp connec-tions, ASP adapters enable quick,simple installation into the cablesection itself immediately beforethe device to be protected.A Vel-cro strip is supplied for attachingto any ASP device. In orderto guarantee optimum surge pro-tection, the earth line of the ASPprotection device should be con-nected to themetal chassis of thedevice to be protected via theshortest possible distance.

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Selection aid, surge protection for telecommunications systems

Analogue connection ISDN connection ISDN multiplex

Up to 2 two-corewires e.g. with private connection Installation location 1: Behind the TC transfer

point/building entry point

Installation location 2: On TCterminal,modem or PC

Installation location 1: Behind the TC transferpoint/building entry point




Installation location 1 Basic protection device or combination

protection device

Installation before TC systemSC-Tele 4-C-GArt. no. 5081688

Installation location 1 Basic protection device or combination

protection device

Installation before NTBATKS-BArt. no. 5097976

Installation location 1 Basic protection deviceLSA-B-MAGBasic protection for 10 two-coresArt. no. 5084020

Installation location 2 Fine protection device before analogue

terminalFineController FC-TAE-DArt. no. 5092824

Installation location 2 Fine protection device on ISDN/TC terminalRJ11-ISDN 4-FArt. no. 5081858

Installation location 2 Fine protection device on ISDN/TC terminalRJ11-ISDN/4-FArt. no. 5081858

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Installation location 1 Basic protection device or

combination protection device

Installation before DSL splitterSC-Tele/4-C-GArt. no.: 5081688

Installation location 1 Basic protection device or

combination protection device

Installation before DSL splitterSC-Tele/4-C-GArt. no.: 5081688

Installation location 2 Fine protection for computer on network

sideNet Defender ND CAT6A/EAArt. no. 5081800

Installation location 2 Fine protection for computer on network

sideNet Defender ND CAT6A/EAArt. no. 5081800

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Selection aid, surge protection for MSR systems

Heating controller Control application with higher nomi-nal currents

420 mA current loopPT 100 (measuring sensor)PT 1000 (measuring sensor)

Installation location 1 In front of controller Power supply For alternating current systems (AC)

and direct current systems (DC)

230 V versionVF 230-AC/DC-NArt. no. 5097650







Installation location 2 Behind the control unit and

before the receiver/transmitter

Data cable/measurement sensor cable Installation only before the control unit

e.g.measuring sensor 24 V versionFLD 24-NArt. no. 5098611



Data cable/measurement sensor cable 24 V version with test functionMDP-4/D-5-T-10Art. no. 5098413



Data cable/measurement sensor cable 24 V version with test functionMDP-4/D-24-TArt. no. 5098431

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EIB BUS systemsInterbus, Profibus

Intrinsically safe measuring circuits









24 V versionVF2-24-AC/DC-FSArt. no. 5097931




e.g.measuring sensorTKS-BArt. no. 5098976




e.g.measuring sensorTKS-BArt. no. 5098976




e.g.measuring sensorFDB-2/24-MFor use in Ex areas (2-pole)Art. no. 5098380FDB-3/24-MFor use in Ex areas (3-pole)Art. no. 5098382

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Selection aid, surge protection for data technology

Star topology Bus topology Ring topology

e.g. 10BaseT, 100BaseT, 10GBit, Powerover Ethernet applications

e.g. 10Base2, 100Base5 e.g. Token Ring

Installation location 1 On server with external communication line Combination protection with a level lower

than that of the basic protection deviceSC-TELE/4-C-GArt. no. 5081688


than that of the basic protection deviceCoaxB-E2/MF-CArt. no. 5082412

Installation location 1 On server with external communication lineLSA-BF-180 for 180 VArt. no. 5084024and LSA-T-Lei separating strip for 10 two-coresArt. no. 5084012and LSA-E earthing stripArt. no. 5084012RJ45S-E100/4-BArt. no. 5081726

Installation location 2 On hub/switch/terminalNet Defender ND CAT6A/EAArt. no. 5081800

Installation location 2 terminalCoaxB-E2/MF-F for 10Base2Art. no. 5082420

Installation location 2 On hub/switchNet Defender ND CAT6A/EAArt. no. 5081800

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Ring topology

e.g. Token Ring


than that of the basic protection deviceSC-TELE/4-C-GArt. no. 5081688

Installation location 2Net Defender ND CAT6A/EAArt. no. 5081800

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Selection aid, surge protection for TV and radio

Broadband (Cable TV) SAT receiver unit SAT receiver unit

Cable TV With receiver, e.g. in single family house Withmultiswitch, withmulti-way LNB, (e.g.inmultiple family house)

Installation location 1 Between BC transition point and boosterDS-Fm/fArt. no.: 5093275DS-F f/fArt. no.: 5093272

Installation location 1 Between LNB and receiver Directly on device to be protectedDS-Fm/fArt. no.: 5093275DS-F f/fArt. no.: 5093272

Installation location 1 Between LNB and Multiswitch Directly on device to be protectedDS-Fm/fArt. no.: 5093275DS-F f/fArt. no.: 5093272TV 4+1 compact protection device(4 x SAT, 1 x terrestrial)Art. no. 5083400

Installation location 2 Before each terminal (TV, video, HiFi) Fine protection devices with integrated surge

protectionmodule for TV supply cable forthe protection of TVs or video recorders,incl. adapter cables

FineController FC-TV-DArt. no. 5092808Other versions available


protectionmodule for TV/SAT supply cablefor the protection of TV/SAT receivers, incl.adapter cables

FineController FC-SAT-DArt. no. 5092816Other versions available


protectionmodule for TV/SAT supply cablefor the protection of TV/SAT receivers, incl.adapter cables

FineController FC-SAT-DArt. no. 5092816Other versions available

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Terrestrial receiver unit

Analogue TV DVB-T

Installation location 1 Between antenna and boosterDS-Fm/fArt. no. 5093275DS-Ff/fArt. no. 5093272TV 4+1 compact protection device(4 x SAT, 1 x terrestrial)Art. no. 5083400

Installation location 2 Before each terminal (TV, video, HiFi) Fine protection devices with integrated

surge protectionmodule forTV supply cable for the protection ofTVs or video recorders,incl. adapter cables

FineController FC-TV-DArt. no. 5092808Other versions available

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Contents, protection and spark gaps

Standards, protection and spark gaps/ATEX approval 60

Installation principle for protection and spark gaps 61

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Protection and spark gaps/ATEX approval

TaskOBO isolating and protectivesparkgaps are designed to isolateelectrical system components,which under normal operating con-ditions are not connected together.If lightning strikes cause a poten-tial increase in one of the electricalsystem components, the isolatingspark gap guarantees a conduc-tive connection and thereforeequipotential bonding.

FunctionAs their name suggests, isolatingand protective spark gaps com-prise a sparkgap. Thisgap trans-fers from the insulating to the cur-rent-permeable condition when anelectric arc is ignited by a surgevoltage. An isolating sparkgap dif-fers from a protective sparkgap inits purpose for use. Isolatingspark gaps isolate varying earthpotentials, while the protectivespark gaps are used only in roofstandard open-wire lines.

Applications For producing an indirect con-

nection between insulatingflanges (cathodic corrosionprotection).

For bridging insulating flanges,also in ex-protected areas(tested in accordance withATEX Directive 94/9/EC).

Avoidance of drag in residualvoltages, especially TT sys-tems.

For lightning protectionequipotential bonding accord-ing to DIN VDE 0185-305 (IEC62305).

For connecting different earth-ing systems, the aim being to-make optimum use of all earth-ers for lightning protectionequipotential bonding.

As ameasure that saves iso-lating connections formeasur-ing and test purposes.

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Installation principle for protection and spark gaps

Open-wire connection Coupling of earthing systems

Spark gaps for insulating flange Spark gaps for potential isolation

e.g. in agas pressure control station Especially suitable forexplosion-protected

area For lightning current-compatible bridging of

insulating flanges or insulating threadedjoints

Type 480, 94/9/EG (ATEX Directive)

Several earthing systems in one building,e.g. foundation earther and deep earther

No electrochemical corrosion Entire earther surface is effective in the

event of a direct lightning strikeType 481

Roof standard sparkgaps for insulation Largest possible distance between the roof

stand of a low voltage outdoor cable and alightning protection system

Distance < 0.5m: Encapsulated sparkgapin agreement with energy provider

Type 482

Several earthing systems in one building If the operation of special electronic

equipment requires a separate earthingsystem, this function earthmust beconnected to the operating earth.

Prevention of dangerously high voltagedifferences

An additional throttle is fitted to keep high-frequency voltages away from the functionalearthing.

Type FS-V20

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Contents, measuring and test systems


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Measuring and test systems

Life Control testing unit ISOLAB testing device

Testing surge protection deviceswithin data cablesOften, it is necessary to check thefunctionality of the surge protec-tion devices within the data cable.Of particular importance is that theactual testing of the protection de-vices has no negative impact onthe data signal.

The Life Control testing unit, devel-oped by OBO Bettermann, allowstesting of the protection deviceswhen installed, without influencingthe data signal. A thin testing pincreates the contact with the inte-grated lightning barrier. The inte-grated microprocessor displaysthe test result on the OLED displayand also emphasises it with acous-tic signals. A connectable LEDwithin the testing pin is an addi-tional feature, allowing orientation,even in the darkest switchgearcabinet.A high-quality testing case for safetransport and the documentationof the testing results are a compo-nent part of this innovation fromOBO Bettermann.

Testing of the arrestor coversV50, V25, V20 and V10The ISOLAB testing unit allows thechecking of the arrestor coversV50, V25, V20 and V10.A rotarycontroller allows the selection of

the appropriate OBO Bettermannarrestor. Then, the cover of the ap-propriate combination and/orsurge arrestor is placed in the ap-propriate opening in the device.The function of the varistor is thenchecked by pressing the test but-ton. Besides arrestor testing, theISOLAB also allows insulation test-ing according to VDE 0100-610.

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Testing of lightning protectionsystems with the PCS systemThe peak current sensor (PCS)records and stores pulsed cur-rents in the form of a magneticcard. This is amethod ofmonitor-ing whether lightning has hit thelighting protection and whichmaxi-mum lightning current has oc-curred.If the PCS system ismounted be-tween the interface from equipo-tential bonding to earthing system,the coupled lightning current in abuilding can also be measured.The results can provide informa-tion on potential damage in theelectrical installation. The PCScard is mounted by snapping acard holder onto the round con-ductor at a defined distance.The measuring range of the cardis between 3 and 120 kA. The -magnetic card reader offers theoption of evaluating peak currentsensors. The appropriate peak cur-rent value is shown on the display.Alternatively, OBO Bettermann can

read it off for you. In this caseplease contact your OBO Better-mann agency or subsidiary.

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Contents, planning aids, equipotential bonding systems

Planning the lightning protection equipotential bonding 68

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Planning the lightning protection equipotential bonding

Path of the lightning current Equipotential bonding bar, Type 1801

Tasks and function of internallightning protectionThe task of an internal lightningprotection system is to preventdangerous sparking within thebuilding to be protected. Sparkingcan occur especially when high

Documents

Catalogo Tbs en 2010 2011