Assembly instructions - Cenika

F-serie NBS - Assembly instructions 6/2012 2

Assembly instructionsVersion 6/2012

TAble of conTenTs Page1 general 4

2 assembly instructions 5 2.1 base 5 2.2 Backplatesandbackprofiles 5 2.3 side and end plates 6 2.4 Frontprofiles,intermediatesupportsandintermediatecovers 8 2.5 Intermediatehorizontalprofilesanddripcovers 9 2.6 Mountingplates 11 2.7 Busbarinsulatorholdersandbusbarinsulators 11 2.8 Doors 12 2.9 Intermediatecoversystem 13 2.10 Covers,installationrailsandspacers 15 2.11 Touchandfingerscreens 18 2.12 Coverdoorsystem 19 2.13 special parts 20

3 sealing 23 3.1 Protection classes 23 3.2 sealing of cell centre parts 24

4 busbars 26 4.1 Horizontalbusbars 26 4.2 Verticalbusbars 27 4.3 Equipmentearthing 27 4.3.1 Protective earthing of frame 27 4.3.2 Protective earthing of doors and covers 28 4.4 Connectingofbusbars 29

5 other information 31

6 technical Data 32

7 Parts list 33


1 GeneRAl

TheF-serieNBSisanenclosuresystemforlow-voltageswitchgearandcontrolgearassembliesprimari-lyintendedfordistribution,control,andautomationcentrestoprotecttheequipmentagainstmechani-calimpact,foreignmaterial,dust,andhumidityinindoorandoutdoorinstallations.Theenclosurealsoprotectsusersfromgettingintocontactwithlivecomponentsorcurrentconductors.

ThestructureoftheF-serieNBSsystemdiffersfromtheF-seriesystemprimarilyregardingthebottomandsideplates.BothsystemsaretypetestedandcertifiedaccordingtoStandardsIEC/EN61439-1and iec/en 62208.

Table 1.1. ModularsizesoftheF-serieNBSsystem.

ThesystemisassembledusingdifferenttypesofscrewsthatarepresentedinTable1.2.

Table 1.2. AssemblyscrewsoftheF-serieNBSsystem.

ThetechnicaldataofF-serieNBSsystemisshowninatableinChapter7.

Width[mm] 200,300,450,600and750

Depth[mm] 80,160,250and320

Height[mm] 140,175,210,280,350,420,490,560,700,840,980,1120,1400,1680and1960

Screw application

50059054PlatescrewDIN79814,8*9,5or50059052AssemblyscrewM5*10

Assemblyofbase,frameplates,ends,sideplates,mountingplatesetc.

50059053HingescrewM5*8Taptite Forfasteningdoorstofrontprofiles/sideplates

Platescrew5,5*13DIN7981 Forfasteninginsulatorholderstoframeplate

Platescrew5,5*25DIN7981 Forfasteninginsulatorholdersandbusbarinsulatorendstoframeplate

50059069Platescrew4,8*25mm Forfasteningendinsulatorsandcovers


2 AsseMblY InsTRUcTIons

TheF-serieNBSenclosuresystemisassembledstartingfromtheenclosurebaseifapplicable.Theassemblyofanenclosurewithoutabaseisstartedbyjoiningthebackplatesandbackprofilesusingscrewsorrivets.Preassembledbasicframepackagescanbefastenedtogetherusingeitherscrewsorrivets.

Whenthebasicframeisassembled,youcanstartinstallingtheelectriccomponentsintothecabinetsbyfirstinstallingthemountingplates.Anotheralternativeistoaddsideplates,endplates,andendsupportstothestructure.Frontprofiles,intermediatesupports,anddividersareusedfordelimitingthedifferentfieldsinthehorizontaldirection,whereasintermediatecoversanddripcoversareusedintheverticaldirection.

2.1 base

TheassemblyofbasefortheF-serieNBSsystemisstartedbyjoiningwithscrewstheback(3),front(4),andside(1)andintermediateplates(2)neededforthebasearrangementasshowninFig.2.1.Assemblyscrewsareusedforjoiningtheseparts.

figure 2.1. F-serieNBSsystembaseassembly.

2.2 Backplatesandbackprofiles

Thebackprofiles(1),neededformountingthemechanicalparts,suchasmountingplates,usedwheninstallingtheelectriccomponents,arefastenedtothebackplates(2)usingeitherrivetsorscrewsasshowninFig.2.2.Thelengthofbackprofilesischosenaccordingtothebackplatelength,excludingtheendbackplates(3)thatarealsoshownintheFigure.Byusingendbackplatesyoucanleavetherearwallofthecentreopenforwiring,forinstance.


figure 2.2. Assemblyofbackplatesandbackprofiles.

2.3 side and end plates

Side plates Sideplatescanbefastenedusingeitherrivetsorassemblyscrews.ThesideplatesarefastenedtothebackframeconsistingofbackplatesandtheL-shapedprofilesasshowninFig.2.3.

figure 2.3. Assemblyofsideplatestobackframe.


End platesTheendplates(1)arefastenedwithassemblyscrewstotheframestructuremadeupofthebackandsideplatesandbackprofilesafterinstallingtheendsupports(2).Theassemblyhooksoftheendsup-portsarefirstinsertedintothesquareholesinthebackprofilesandthesupportsarethenturnedho-rizontaltosupportthemountingoftheendplatesatthetopandbottomofthestructureasshowninfig. 2.4.

figure 2.4. Mountingofendsupportstobackprofiles.Theendplatesarefastenedtothesideand backplatesusingscrews.


2.4 Frontprofiles,intermediatesupports,andintermediatecovers Thefieldsinsidethecentrearedelimitedusingfrontprofiles,intermediatesupportsandintermediatecovers.Frontprofilesarefastenedtoendplatesandintermediatesupportsusingscrews.Thepossibleprefabricatedknock-outblanksintheprofileshallberemovedattheintermediatesupports.

ByusingaPVCintermediatecoveryoucanimprovethecentre’sinternaldivisionintosections.TheintermediatecoversalsoprovidetheIP20touchscreeningdefinedfortheinteriorpartsofthecentre.Thecombsectionattherearpartoftheintermediatecovercanbeusedforwiringbetweenfields,forexample.

Figure2.5showstheassemblyoffrontprofiles,intermediatesupports,andintermediatecoverstothemainframe.

figure 2.5. Fixingfrontprofilewithscrewstoendplate(andsupport)andtointermediatesupports. Theintermediatecoverisfixedtotheintermediatesupports.


2.5 Intermediatehorizontalprofilesanddripcovers

Dripcoversdividetheassembledcentreintheverticaldirectionintocellsforelectriccomponents.Inadditiontodripprotection,thedripcoversalsoactastouchscreensandcorrectlyinstalledtheyprovi-detheinternalpartswithClassIP20touchscreening.

Figure2.6a)showshowthedripcoverrearpart(1)isinstalledtotheLprofiles.Thefrontpartofthedripcover(2)andthehorizontalintermediateprofile(3)arefastenedwithscrewsasshowninFig.2.6.b).

figure 2.6 a) DripcoverrearpartisfixedwithscrewstoLprofiles.


figure 2.6 b) Thedripcoverfrontpart(2)isfastenedwithscrewstothefrontprofileandthe horizontalintermediateprofile(3)thatisfixedtothesideplate.

Dividing intermediate profilesDividingintermediateprofilescanbeused,forexample,fordividinga600mmwidedevicefieldintotwofields.Dividingintermediateprofilesarefastenedinthesamewayashorizontalintermediatepro-files.AfrontprofilethatdividesthefieldspaceisinstalledbetweentwodividingintermediateprofilesasshowninFig.2.7.

figure 2.7. Afrontprofilethatdividesthefieldspaceisinstalledbetweentwodividingintermediate profiles.


2.6 Mounting plates

Themountingplates(1)forelectriccomponentsarefixedtothebackplateLprofilesusingassemblyscrewsasshowninFig.2.8.ThemountingplatesofboththeF-andtheE-seriesystemscanbeusedintheF-serieNBSsystem.Themountingplatescanbeinstalledbeforethesideplatesofthesystemandthiswayprovideampleroomformountingtheelectriccomponents.

figure 2.8. ThemountingplatesoftheF-serieNBSsystemcanbeinstalledbeforethesideplates.

2.7 busbar insulator holders and busbar insulators

Thebusbarinsulatorholders(1)areusedforinstallingbusbarsinthecellcentre.ThebusbarinsulatorholdersarefastenedtotheLprofileandthesideplates/frontprofilesusingassemblyscrewsasshownin fig. 2.9.

figure 2.9. BusbarinsulatorholdersareinstalledbetweenLprofilesandsideplates/frontprofiles.


Thebusbarinsulatorsarefastenedtothebusbarinsulatorholders(3)withscrews.Fortheendsofpos-siblepowerbusbarsinanenclosure,busbarinsulators(6)andbusbarendinsulators(1)areinstalledtoinsulatethebusbarsfromthemetalframestructuresasshowninFig.2.10.Thebusbarinsulatorsarefastenedwitheither4.8x9.5mmplatescrewsorM5x10assemblyscrewsandthebusbarendinsulatorswith,forinstance,5,5x25mmscrews.

figure 2.10.Installingbusbarendinsulatorsandbusbarinsulatorstotheendofpowerbusbar system.

2.8 Doors

ThedoorsfortheF-serieNBSsystemhavepreassembledhingeswithanopeningangleof160degrees.Thedoorsaremountedtofrontprofilesorsideplatesdependingonthedesiredopeningdirection,seefig 2.11.

figure 2.11.Doorsaremountedtofrontprofilesorsideplates.Theopeningangleforalldoorsis160 degrees.


2.9 Intermediatecoversystem

Theintermediatecoversystemconsistsofintermediatecovermountingbrackets,mountings,andco-vers.UsingtheintermediatecoversystemitiseasytohavecomponentswithDINrailmountingneatlybehindadoor.

Intermediate cover mountingsIntermediatecovermountings(1)arefirstfastenedwithscrewstointermediatecovermountingbrackets(2).ThenthismountingsetisfastenedwithassemblyscrewstotheLprofile(3)asshowninfig. 2.12.

figure 2.12.Intermediatecovermountingsandtheirbracketsareassembledtogetherandthe assemblyisthenfastenedwithscrewstotheLprofiles.

The17.5mmspacingofholesintheintermediatecovermountingsallowsanalmostinfinitenumberofdifferentintermediatecovercombinations.


Intermediate coversIntermediatecovers(3)aregroupedinthedesiredordertotheintermediatecoverfieldandfastenedtointermediatecovermountingsusingintermediatecoverhinges(2).Attheend(s)ofintermediatecoverfieldsitisadvisabletouseendintermediatecovers(1)forcoveringterminalstrips,forinstance.InstallationofintermediatecoversisshowninFig.2.13.

figure 2.13.Intermediatecoversarefastenedtointermediatecovermountingsusingintermediate coverhingesandassemblyscrews.


Installation depthTheinstallationdepthoftheintermediatecoversystemisdesignedsuitableformodularcomponentswithDINrailmounting.Theinstallationdepthformodularcomponentsisapprox.47.35mmfromDINrail(1)surfacetotherearfaceofintermediatecover(2).Thedistancebetweentheintermediatecoversurfaceandthefrontsurfaceofthedoor(3)isapprox.72.4mmasshowninFig.2.14.

figure 2.14.Sectionalviewofintermediatecoverstructure.

2.10Covers,installationrailsandspacers

CoversTheF-serieNBScovers(1)arefastenedwitheither4.8x25mmplatescrewsorhingesononeside.Thecoverscanalsobesealedusingthesealinglug(2)ofthecover.InstallationofcoverstotheframestructureisshowninFig.2.15.

figure 2.15. Installingcoverstoframestructure.Thecovercanbefastenedusingscrewsorscrews andhinges.Thecovercanalsobesealed.


Installation railsSpacersandinstallationrailsareusedforcomponentswithDINrailmounting.Installationrails(2)arefastenedwithscrewstothefrontpartofthesideplateandfrontprofileasshowninFig.2.16a).Theinstallationrailsaredimensionedsothattheyfitunder280mmand420mmhighcovers.Figure2.16b)showsasectionalviewofanapplicationofinstallationrail(2)andDINrail(6).TheotherpartsinFig.2.16b)aresideplate(4),cover(5),andfrontprofile(7).

figure 2.16 a) FasteninginstallationrailforDINrailstosideplateandfrontprofile.

figure 2.16 b) Sectionalview.ThedistancebetweenDINrail(6)surfaceandthebackofthe coveris47.65mm.

Comparedwithspacers,installationrailsprovidebettersupportforDINrailsandcomponents,butwithspacersitmaybepossibletoshorteninstallationtimes.


SpacersByusingspacers,youcansettheDINraildistancefromthecoversuitabletothecomponents.Withspacersitisalsopossibletobring,forinstance,mountingplatesforwardsfromtheLprofile.Figure2.17a)showstheinstallationofspacers(3)andDINrailstotheLprofile.Figure2.17b)isasectionalviewoftheuseofspacersshowingspacer(3),DINrail(1),andcover(4).

figure 2.17 a) SpacersarefastenedtoLprofiles,andDINrailstospacers.

figure 2.17 b) SectionalviewofspacersandDINrails.ThedistancebetweenDINrailsurface andthebackofthecoveris46.2mm.


2.11Touchandfingerscreens

Theuseoftouchandfingerscreensissimilartointermediatecovers.TheDINrailsusedformountingcomponentsandthetouchscreenbrackets(2)arefastenedinfrontofspacers.Touchscreenplates(1)isfastenedwithscrewsorthetabsonthebracketsasshowninFig.2.18.

figure 2.18. Installingtouchscreenplates.Touchscreens(1)arefastenedusingbrackets(2) positionedinfrontoftheDINrails.


2.12Coverdoorsystem

Thecoverdoorsystemcanbeused,forinstance,foreasilyconvertinganelectriccentreenclosureori-ginallyprovidedwithtouchscreeningintoanenclosurewithdoors.Thecoverdoorsystemisaframestructurethatconsistsoftheactualdoors(1),theirendpieces(3)andsideplates(2),andthecornerpiecesthatreinforcetheendsinenclosureswithmultiplefields.Inenclosureswithmultiplefieldsyoualsoneedlatchcounterpieces(4)forlockingthedoors.

ThestructureofthecoverdoorsystemisshowninFig.2.19.

figure 2.19.Thecoverdoorsystemisaframeforinstallingdoors,forinstance,toenclosures originallyprovidedwithtouchscreening.


2.13 special parts

Fixing railsFixingrails(2)canbeusedforfixingacellcentreatthetopandbottomtoawallor,forinstance,toraisingbeads.FixingrailscuttoappropriatelengthisfastenedtotheenclosureendwithscrewsasshowninFig.2.20.Ifnecessary,fixingrailscanbelengthenedusingextensions(1).

figure 2.20.Fixingrailsarefastenedtoendplates.Railscanbeconnectedusingextensionpieces.

Attaching bracketsAttachingbracketsareusedforthesamepurposesasfixingrails.Attachingbrackets(1)arefastenedtotheenclosuretopandbottomendswithassemblyscrews.Unlikefixingrails,theattachingbracketsaremechanicalpartswithmodulardimensions.

figure 2.21. Attachingbracketsarefastenedwithscrewstobothendsofenclosure.


Foot balksMovinganF-serieNBSenclosurecanbedonebyusingatransportstandspeciallydesignedforthispurpose,anditcanalsobeusedwhenassemblingthecentre.Themechanicalpartsofthecentrearefastenedtothetransportstandusing,forinstance,footbalks(1)thatcanalsobeusedforprovingaclearancetothewall.

figure 2.22.Footbalksarefastenedtoattachingbracketsorfixingrails.Footbalkscanalsobe utilized,forinstance,whenthecentreisassembled.

DIN rail bracketsApairofDINrailbrackets(2)canbeusedformountingsingleDINrails(1).Thebracketscanbeinstalledtosideplatesorfrontprofiles,forinstance.TherailispushedintotheslotintheDINrailbracketasshowninFig.2.23.

figure 2.23. DINrailsareinstalledbypushingtherailintotheDINrailbracket.


Vertical DIN installation railsWithverticalDINinstallationrails(2)DINrails(1)canbeinstalledverticallyin,forinstance,thetermi-nalstripspaceasshowninFig.2.24.VerticalDINinstallationrailscanalsobeusedformountingcom-ponentsinthecomponentscompartmentwhenapplicable.

figure 2.24. WithverticalDINinstallationrails,DINrailscanbemountedvertically.


3 seAlInG

F-serieNBScellcentrescanbebuilttomeetprotectionclassIP55requirementsbyusingsuitablestripsandsealantsatthejoints.WithouttheuseofsealingstripsorsealanttheprotectionclassisIP20-IP30dependingontheperforationsinthefrontprofilesandhorizontalintermediateprofiles.

3.1 Protection classes

Protection class IP40ToreachprotectionclassIP40,sealingstriporsealantisusedforsealingthejointsbetweenfieldsandtheendsintheenclosuretop,andunperforatedfrontprofiles/sideplatesareused.

Protection class IP34Allplatejointsshallbeprovidedwith0.8*20mmsealingstripsandtheendsoftheintermediateprofi-lesshallalsobesealed.Sealantisusedforsealingthemiddlejointsoftheenclosuretopandthefrontsidecornersoftheendplateagainstthedoorsealingstrip.TheedgesofpossibleCflangeblanksontheendplatesshallbesealedwithsealant.

Protection class IP44 (spray protected)Inadditiontotheabovesealingprocedures,toreachclassIP44protection,sealantshallalsobeapp-liedtotheverticaljointsofthebackplates.

Protection class IP55 (watertight)ToreachclassIP55protection,eithergluingputtyorsiliconesealantshallbeappliedtoalljointsinpartssurroundingtheframestructure(includingthebase).Anatleast1.5mmthickandwidestripofsealantshallbeappliedtothejointsurfacesothatsealantissqueezedbetweentheplateswhenthefasteningscrewsaretightened.

Thepointswheresealantshallalsobeappliedarethedooropenings,i.e.thejointsbetweenthesideplatesandfrontprofilesaswellasendplatesandintermediatehorizontalprofiles,seeFig.3.1.

figure 3.1. Applyingsealanttojointsbetweenendplatesandintermediatehorizontalprofilesaswell assideplatesandfrontprofiles.


3.2 sealing of cell centre parts

InadditiontotherequirementsinChapter3.1,thesealingofF-serieNBScentrepartsispresentedinthefollowingChapters

Back platesSealingstrips(2)shallbegluedtothelongsidesofthebackplates(1)asshowninFig.3.2.

figure 3.2. SealinglongsidesofbackplateforF-serieNBScellcentrewithsealingstrip(50020040 Jointsealingstrip0.8*20mm).

End platesOftheendplates,theshortsidesandtherearendfacingthebackplateshallbesealedaccordingtoFigure3.3.

figure 3.3. Sealingofendplates.Sealingstripisattachedtotheshortsidesandrearoftheend plates.

Side platesOnthesideplates(2),sealingstripisattachedtothesidesfacingthebackplateandtheLprofileasshowninFig.3.4.

Sealing strip


figure 3.4. Attachingsealingstriptosideplate.Sealingstripisattachedtotherearpartoftheside plate.

Intermediate profilesWhenaimingatveryhighprotectionclasses(IP34-55)withF-serieNBSenclosures,thejointbetweenintermediateprofileandfrontprofileshallbesealedwithsealingstripasshowninFig.3.5.

figure 3.5. Usingsealingstripbetweenintermediateprofileandfrontprofile

Sealing stripFront profile

Intermediate profile


4 bUsbARs

Severaldifferentbusbarsystemalternatives,suchassystemsbuiltonC-orF-serieflanges,canbeusedintheF-serieNBSenclosuresystem.Aluminiumbusbarswereusedinthetemperatureriseandshort-circuittestsontheF-seriesystem,seeTable4.1.Thesystemdoesnot,however,excludetheuseofcopperbusbarsthatcanbedimensionedapplyingtheSFS5556Standard,seeTable4.2.

F-seriebusbarinsulators(kuteandkuten)shallbeusedastheinsulatorelements.Withfieldsmorethan450mminwidthintermediateinsulatorsshallbeusedsothatthedistancebetweenbusbarinsu-latorsneverexceeds450mm.Thedistancebetweeninsulatorsonverticalbusbarsystemsmaynot,either,exceed450mm,seeFig.4.1.

figure 4.1. ThemaximumalloweddistancebetweenbusbarinsulatorsintheF-serieNBSsystemis 450mm.

Theshort-circuitresistance(Ipk)ofF-serieNBScentrescanbe,asnecessary,increasedbyusingashorterinsulatordistancethan450mm(=byaddingthenumberofinsulators).Addednumberofinsu-latorshasnoeffectonthethermalshort-circuitresistance(Icw).

Noseparateshort-circuittestshavebeenmadeforcopperbusbars.Whenevaluatingtheshort-circuitprotectionofcopperbusbarstheshort-circuitresistancevalueforaluminiumbusbarsandinsulatorscan,however,beused.

4.1 Horizontal busbars

ThehorizontalbusbarsystemisinstalledinthebusbarcompartmentoftheF-serieNBSenclosurebyusingbusbarinsulatorholdersandbusbarinsulators.IntheF-serieNBSsystem,busbarinsulatorsmadeofpolycarbonate(PC)areused,withperforationsmadefor10x10-10x50flatbars.

Table 4.1. Theloadingtablesforaluminium(E-AlMgSi-T6)busbars(conductivity31,9m/Ωmm2) testedinF-serieNBSenclosureswithprotectionclassIP30.Themarked(1)busbars havebeentestedfortemperaturerise.

max 450

RatedcurrentIn[A] Numberofbusbars/phase Albusbarsize Short-circuitresistancei cw/ipk[A]*103

400 2 10*20(1) 17,2/34,1

600 2 10*30(1) 21,6/42,6

800 2 10*40(1) 21,6/42,6

1000 2 10*50 24,0/50,4


Table 4.2. Calculatedratingsforcopper(E-CuF30)busbars(conductivity56m/Ωmm2)lyingflatina freespaceintheFserieNBScellcentre(SFS5556).

ForenclosureswithhigherprotectionclassthantheonegiveninTables4.1and4.2(e.g.IP30IP44)theratingsforbusbarswouldbeabout20-25%lowerthanthevaluesgivenintheTables.

4.2 Vertical busbars

Table4.3showstheratedcurrentsandtheresultsoftheshort-circuitandtemperaturerisetestsforverticalbusbarsintheF-serieNBScellcentre.

AccordingtoIEC/EN61439-1(Chapter7.5.5.1.2)thebusbars(e.g.branchbusbars)andconductorsbetweenpowerbusbarsandtheoperatingunitfeedconnectionsaswellasthedeviceswithinoperatingunitscanbedimensionedfield-specificallyonthebasisoftheloadscausedbyashort-circuitupstreamoftheshort-circuitprotector.Inotherwords,theshort-circuitresistanceofverticalandbranchbusbarsneednotbeequaltothevalueforhorizontalbusbars.

Table 4.3. Loadingtablesforverticalaluminiumbusbars.Temperaturerisetestshavebeencarried outforthemarked(1)busbars.

4.3 equipment earthing

Thepurposeofequipmentearthingistoprotecttheuseragainsttheeffectsofpossiblefaultsinthecellcentreorintheexternalcircuitfeedingthecellcentre.Theequipmentearthingcircuitofthecellcentreconsistsofseparateprotectiveconductorsorconductivestructuresorboth.

4.3.1 Protective earthing of frame

Forprotectiveearthing,theLprofilesofF-serieNBSenclosureshaveholesthatcanbeusedforpro-vidingprotectiveearthingoftheframe.UsingM8screwsyoucanconnectmax.one70mm2protectiveconductorofcopper.Atthispointyoumustmakesurethattheconnectorusedprovidesasufficientcontactareatotheframe.

RatedcurrentIn[A] Numberofbusbars/phase Cubusbarsize

400 2 5*20

600 2 10*20

800 2 10*30

1000 2 10*40

RatedcurrentIn[A] Numberofbusbars/phase Albusbarsize Shortcircuitresistancei cw/ipk[A]*103

250 2 10*10 7,5/12,8

400 2 10*20(1) 7,5/12,8

630 2 10*30(1) 7,5/12,8

800 2 10*40(1) 23,0/48,3

1000 2 10*50 24,0/50,4


Table 4.4. Cross-sectionalarea(IEC/EN61439-1)ofprotectiveearthconductor(PE,PEN).

AccordingtoIEC/EN61439-1thecrosssectionofaprotectiveconductorcanbecalculatedfromtheequation (4.1)

Theequationisusedforcalculatingthecrosssectionforaprotectiveconductorcapableofsustainingthethermalloadcausedbyacurrentofshortduration.Table4.5containssomeprotectiveconductorcrosssectionscalculatedusingequation4.1.

Table 4.5. Protectiveearthingofframeaccordingtoratedthermalcurrentresistance(Icw).

Installing PE busbarThePEbusbarisinstalledinF-serieNBScentresinthefrontpartoftheequipmentcompartmentusingPEbusbarholdersortoFserie/Cflangewithrail.ThePEbusbarisconnectedusingconnectorsthataresuitableforPEN,PE,N,mainpotentialequalizingandframeprotectiveearthingconnectionsaccordingtoSFS154(e.g.YKPENandYKOLconnectors).

4.3.2 Protective earthing of covers and doors

Protectiveearthingofcoversanddoorstotheframestructureisprovidedthroughthedirectcontactoftheirunpaintedrearpartsandthecontactsurfacesoftheirfasteningscrews.Componentswithmax.16Aratedcurrentcanbemountedtodoorswithoutseparateprotectiveearthingconductor.Forhighercurrents,doorsmustbeprovidedwithseparateprotectiveearthingusingaconductorthatisconnectedtothedoorthrougheitherascrewandnutconnectionoraprotectiveearthingscrewweldedtothedoor.

Cross-sectionofphaseconductorS[mm2] Min.cross-sectionofcorrespondingprotectiveconductor(PE,PEN)Sp[mm2]

s 16 s

16<s 35 16

35<s 400 s/2

400<s 800 200

800<s s/4

Ratedthermalcurrentresistanceof cell centre icw[A]x103

PVCinsulatedcopperconductorCu[mm2]

Aluminium busbar10x30mm

5 35 1

6 50 1

10 70 1

12,5 2x50 1

16 2x70 1

20 2x70 1

25 3x70 2

32 4x70 2

40 4x70 2

50 5x70 3

63 7x70 3


4.4 connecting of busbars

ThepowerbusbarsystemisinstalledintheF-serieNBSenclosurebetweentheLprofileandthefrontsideofthefrontprofile/sideplateusingbusbarinsulatorholdersandbusbarinsulators.TheF-serieNBScellcentrehasbeentestedusinghorizontalandverticalbusbarsofaluminiumwiththeirratedva-luesgiveninChapters4.2and4.3.

Toconnectconductorstothebusbarsandbusbarstoeachotheryoucanusevarioustypesofbusbarconnectors(seeEl-partsOy’sproductcatalogue,forexample).

SFS154providescomprehensiveinformationonconnectorsforaluminiumconductorsandconnectionsofaluminiumbusbars.TheTablebelowgivestighteningtorquesforaluminiumconnections.

Table 4.6. TighteningtorquesforAlconnectionscrews.

ConnectingfeedandpowerbusbarsThebusbarsfeedingthecellcentrecanbeconnectedtothehorizontalpowerbusbars,forinstance,asshowninFigure4.2.PiecesofsuitableAlbusbarareplacedbetweenthefeedbusbars.Busbarsareconnectedtogetherusingscrewsandnutsaswellasvarioustypesofconnectingpiecesandwashers.

1.zincedM10hex.headscrew(class8.8) 2.specialwasherYKG28.3M10 3.horizontalpowerbusbars 4.connectingpieceYKG51/80(/100) 5.feedbusbars 6.SFS3738pressurewasher 7.zincedM10nut(class8) 8.SFS3737conicalspringwasher 9.spacerpiece,e.g.of10x30Albusbar

figure 4.2. Connectingfeedandhorizontalpowerbusbarstogether. ConnectingverticalandhorizontalbusbarstogetherVerticalandhorizontalbusbarsareconnectedtogether,asnecessary,usingYKGbusbarconnectors,see fig. 4.3.

1.zincedM10nut(8) 2.SFS3737conicalspringwasher 3.verticalbusbars 4.connectingpieceYKG51/30 5.horizontalbusbars 6.specialwasherYKG28.3M10 7.zincedwasherYKG44 8.zincedhex.headscrewM10(8.8)

figure 4.3. ConnectingverticalandhorizontalbusbarsusingYKGbusbarconnectors.

Screwsize m6 m8 m10 m12 m16

Tighteningtorque[Nm] 6...9 15...22 30...44 50...75 120...190

543

2

89

6

1

7

53

6

4

1

7

2

8


Whenmakingtheconnectionsyoumustmakesurethattherequirementsonmakingconnectionspre-sentedintheSFShandbook154,Chapter7.1.3“Ulkoistenjohtojenliittimet–Alumiinijohtimienliitti-metjaalumiinikiskojenliitokset”arecompliedwith.Forexample,thematingsurfacesoftheconnectionmustbedeoxidizedandthecleanedsurfacesprotectedwithconnectiongrease.

Transport breakAnybreakpointsmadeintothecellcentreandpowerbusbarsystemshouldbelocatedatacablefieldtomakereconnectingofbusbarseasier.Forexample,YKG51/120aluminiumprofilesandM10screwsandnutsareusedfortheconnectionasshowninFig.4.4.

1.powerbusbar 2.YKG51/120 3.zincedM10hex.headscrew(8.8) 4.SFS3738pressurewasher 5.zincedhex.nut(8) 6.SFS3737conicalspringwasher 7.SFS3738pressurewasher

figure 4.4. Connectingofbusbarsatatransportbreak.Thebusbarsareconnectedusingconnecting piecesofaluminium(e.g.YKG51/120),M10screwsandnuts,andvariouswashers.

Whenreconnecting,thebusbarpartsarematchedtogether.Theconnectingpiecesareplacedsymmet-ricallyoverthejoint,andthescrewsaretightenedtothecorrecttorque(Table4.6).

5

6

1 23

4

7


5 oTHeR InfoRMATIon

TheF-serieNBScellcentrestructureisdesignedfordistribution,control,andautomationcentresaswellasenclosuresforelectronicequipment.

ComplianceWhenassemblingcentresusingtheF-serieNBSsystemyoushouldensurewith,forinstance,piecetests(standardseriesIEC/EN61439,Chapters8.1.2and8.3)thatthestructuralsolutionsofthedeli-veredcentreswillcomplywiththetypetestedcentreandmeettherequirementsofthestandardsthatforthebasisforcertification.

InadditiontotheexamplesintheseinstructionstherequirementsandregulationsintheIEC/EN61439Standardshallbeobservedwhenassemblingthepowerbusbarsystemaswellasthewholedistributioncentre.Whenusingthestructureyoushouldalsoconsiderthevariousproductstandardsaccordingtowhichthefinalenclosedproductshallbemade.

Whenassemblingthestructureyoushallutilizethespecifiedscrews,liftingeyes,washers,hinges,thecomponentsusedintestsorcorrespondingcomponents,andfollowtheassemblyandoperatinginstructionsprovidedbythecentremechanicssupplier.ThedimensioningoftheinstrumentmountingsonthemountingplatescomplieswiththeSFS2529Standard.InstrumentspacescomplywiththeSFS5601 standard.

Manufacturerreservestherighttotechnicalchanges.

CompatibilityThepartsoftheelectriccentreenclosuresystemsmanufacturedbySuomenCNC-MetalOyareprima-rilycompatiblewithoneanother,forinstance,thedoorsandmountingplatesarecompatiblewithallsystems.

Independency of componentsTheframestructureandfasteningmechanicsaredesignedsothatthecommonestandstandardizedelectricandmechanicalcomponents(e.g.componentsmountedtoDINrails,feedthroughflanges)areeasytoinstalltothestructure.ThestructuresoftheF-serieNBScellcentrearenotcomponent-depen-dent,inotherwords,youcanusethecomponentsofanycomponentsmanufacturer.

Safety distancesInthedesignoftheF-serieNBScellcentreattentionhasbeenpaidonthesafetydistancesbetweenlivepartsandtheconductivepartsoftheframe.BothsurfaceandairgapdistancesintheF-serieNBScellcentreareatleast7mm.

Static loadsDependingonthesize,themountingplatesforF-serieNBSaremadeofeither1.5or2.0mmhot-galvanizedsteelsheetThestructureandthemountingplatescanbestaticallyloadedby2kg/dm²ofmountingplatewithcomponentsfastenedtothemountingplate.Inthiscase,thenumberofmountingplatescrewsshallbeatleastequaltothemassofthecomponentdividedbytwo(2),however,notlessthanfour(4)mountingscrews.

Componentscanbemountedtodoorsandcoversasnecessary.Themaximummassmountedtodoorsis0.5kg/dm2but,nevertheless,notmorethan6kgperhingeinadditiontothedoor’sownweight.Theallowedmassesfastenedtoscrew-mountedcoversare0.25kg/dm2but,nevertheless,notmorethan1kgpercovermountingscrew.


6 TecHnIcAl DATA

general

TheF-serieNBSenclosuresystemcomplieswiththerequirementsintheStandardsIEC/EN61439-1,IEC/EN61439-3andIEC/EN62208.TheproductcomplieswiththeessentialsafetyrequirementssetforCEmarkingbytheLowVoltageDirective2006/95/EC.

InsulatingvoltageUi 1000V

RatedvoltageUn ≤690V

RatedcurrentIn <1000a

Thermalshort-circuitresistanceIcw 17,2-60kA/1s

Dynamicshort-circuitresistanceIpk 25,6-132kA

Protectionclasses IP20-IP55

Impactstrength IK09

material frameparts hot-galvanizedsteelsheet275MAC busbarinsulators polycarbonate,PC

Nominaldimensions depth 80,160,250,and320mm fieldwidths 300,450,600,and750mm

Surfacetreatment epoxypolyesterpaintingRAL7035(DH8080)

Documents

Assembly instructions - Cenika