tiastarTM Motor Control Center - Siemens · such as rubber gloves, hard hat, safety glasses or face...

Instruction guide

tiastarTM

Motor Control Center

www.usa.siemens.com/mcc

THISEQUIPMENTCONTAINSHAZARDOUSVOLTAGES.DEATH,SERIOUSPERSONALINJURY,ORPROPERTYDAMAGECANRESULTIFSAFETYINSTRUCTIONSARENOTFOLLOWED.ONLYQUALIFIEDPERSONNELSHOULDWORKONORAROUNDTHISEQUIPMENTAFTERBECOMINGTHOROUGHLYFAMILIARWITHALLWARNINGS,SAFETYNOTICES,ANDMAINTENANCEPROCEDURESCONTAINEDHEREIN.

THESUCCESSFULANDSAFEOPERATIONOFTHISEQUIPMENTISDEPENDENTUPONPROPERHANDLING,INSTALLATION,OPERATIONANDMAINTENANCE.

Signal wordsThesignalwords“DANGER”, “WARNING”and“CAUTION”usedinthismanualindicatethedegreeofhazardthatmaybeencounteredbytheuser.Thesewordsaredefinedas:DANGER–Forthepurposeofthismanualandproductlabels,DANGERindicatesanimminentlyhazardoussituationwhich,ifnotavoidedwillresultindeathorseriousinjury.

WARNING–Forthepurposeofthismanualandproductlabels,WARNINGindicatesapotentiallyhazardoussituationwhich,ifnotavoided,couldresultindeathorseriousinjury.

CAUTION–Forthepurposeofthismanualandproductlabels,CAUTIONindicatesapotentiallyhazardoussituationwhich,ifnotavoided,mayresultinminorormoderateinjury.

Qualified personForthepurposesofthismanualandproductlabels,aqualifiedpersonisonewhoisfamiliarwiththeinstallation,construction,operationormaintenanceoftheequipmentandthehazardsinvolved.Inadditionthispersonhasthefollowingqualifications:(a)istrainedandauthorizedtoenergize,de-energize,clear,

groundandtagcircuitsandequipmentinaccordancewith establishedsafetypractices.(b)istrainedinthepropercareanduseofprotectiveequipment

suchasrubbergloves,hardhat,safetyglassesorfaceshields,flashclothing,etc.,inaccordancewithestablishedsafetypractices.

(c)istrainedinrenderingfirstaid.

Hazardous voltage.Will cause death or serious injury.Alwaysde-energizeandgroundtheequipmentbeforemaintenance.Readandunderstandthismanualbeforeinstalling,operatingormaintainingtheequipment.Maintenanceshouldbeperformedonlybyqualifiedpersonnel.Theuseofunauthorizedpartsintherepairoftheequipmentortamperingbyunqualifiedpersonnelmayresultindangerousconditionswhichmaycausedeathorseriousinjury,orequipmentorpropertydamage.Followallsafetyinstructionscontainedherein.

DANGER

tiastar TM Motor Control CenterTable of contents

Arc Resistant Equipment Special Considerations:ForArcResistantEquipment,seealsothesupplementalInstructionandInstallationGuideforType2AArcResistantMotorControlCenterE87010-A0098-T004-A5-MCC.

E87010-A0156-T002-A5-MCC

1 General information 4 1.1Partsillustrations 4-52 Receiving and handling 62.1Receiving 62.2Handling 62.3Skidremoval 82.4Storage 83 Installation 93.1Installationquickchecklist 93.2Operatingenvironment 103.3Sitepreparation 103.4Mounting 113.5Topandbottomcovers 123.6Installationofseismicqualifiedstructures 133.7Joiningshippingsections 133.8Groundbus 133.9Splicekits 153.10Pullboxinstallation 163.11Incomingpowerconnections 163.12Incominglineterminationarrangements,mainlugs 18-193.13Incominglineterminationarrangements,maincircuitbreakers 20-213.14Incominglineterminationarrangements,mainfusibleswitches 22-233.15Loadandcontrolwiring 243.16Fieldadditions 25

3.17Plug-inunitremoval 253.18Plug-inunitaddition 263.19Highdensityunitinstallation 273.20Insulation(Megger)test 284 Operation 294.1Pre-energizationchecks 294.2Energizingequipment 304.3Permissibleloadingofmotorcontrolcenters 305 Maintenance 315.1Maintenancequickcheck 315.2GeneralinspectionoftheMCC 325.3Periodiccleaning 335.4Stabfingersandverticalbus 335.5Recommendedtighteningtorques 335.6Disconnectoperatinghandleadjustment 345.7Adjustmentnotes 355.8Maintenanceafterafaulthasoccurred 355.9Disconnectingmeans 355.10Terminalsandinternalconductors 365.11AdjustmentofSentronTypeETIinstantaneoustripmotorcircuitinterrupter(1A-125A) 375.12Fieldtestingofthecircuitbreakers 375.13Overloadrelay 376 Troubleshooting 38-407 Heater tables 41-42

ImportantTheseinstructionsdonotpurporttocoveralldetailsorvariationsinequipment,nortoprovideforeverypossiblecontingencytobemetinconnectionwithinstallation,operationormaintenance.Shouldfurtherinformationbedesiredorshouldparticularproblemsarisewhicharenotcoveredsufficientlyforthepurchaser’spurposes,themattershouldbereferredtothelocalSiemenssalesoffice.Thecontentsofthisinstructionmanualshallnotbecomepartoformodifyanypriororexistingagreement,commitmentorrelationship.ThesalescontractcontainstheentireobligationofSiemens.ThewarrantycontainedinthecontractbetweenthepartiesisthesolewarrantyofSiemens.Anystatementscontainedhereindonotcreatenewwarrantiesormodifytheexistingwarranty.

tiastarMotorControlCenterInstructionGuide

tiastar Motor Control CenterGeneral information

4 tiastar Motor Control Center Instruction Guide

Key to section construction features1. Rearbrace2. Sidesheetassembly(onouterof

motorcontrolcenters)3. Bottomwireway4. Frontbottombasechannel5. Channelsills6. Topwireway

7. Horizontalbus8. Verticalbus,300A, 600A,and800A9. Horizontalgroundbus

10. Dividersidesheetassembly(betweenadjoiningsections)

11. Horizontalbussupport12. Standardverticalbusbrace

13. Horizontalbussupport(rearview)14. Standardverticalbusbarrier15. Unitstabholes16. Unitsupportassembly

1.1 Parts Illustrations

1

2

3

4

5

6

Standard bus

12

8

9

10

13

7

14

15

16

11

tiastar Motor Control CenterGeneral information

Optional bus

5tiastar Motor Control Center Instruction Guide

1.1 Parts Illustrations

Key to section construction features17. Wiretiesupport18. Verticalwireway19. Removabledoorhinge20. Verticalwirewaydoor

21. Bottomhorizontalwireway(6”)andformedcoverplate22. Bottomendcoverplate23. Tophorizontalwirewayandfloor(wireway12”high)24. TopPlates25. Liftingangle

19

13

15

117

18

17

25

20

23

24

21

22

tiastar Motor Control CenterReceiving and handling


2.1 Receiving

Uponreceiptofthemotorcontrolcenter,animmediateinspectionshouldbemadeforanydamagewhichmayhaveoccurredduringshipment.Theinspectionshouldbeginwiththepackagingmaterialandproceedtotheequipmentwithin.Besuretolookforconcealeddamageanddonotdiscardthepackingmaterial.Ifdamageisfound,notedamageon“BillofLading”priortoacceptingreceiptoftheshipment,ifpossible.

Note:Thewayvisibleshippingdamageistreatedbytheconsigneepriortosigningthedeliveryreceiptcandeterminetheoutcomeofthedamageclaimtobefiled.Notificationtothecarrierwithinthe15daylimitonconcealeddamageisessentialiflossresultingfromunsettledclaimsistobeeliminatedorminimized.

TheSiemenssalesofficeshouldbenotifiedimmediatelyifdamageorlossisdiscovered.Adescriptionofthedamageandasmuchidentificationinformationaspossibleshouldbegiven.

2.2 HandlingThemotorcontrolcentersareshippedingroupsofonetofourverticalframeswhicharemountedonwoodenshippingskids.Liftinganglesareoneachshippingsection.

Figure1.Liftingamotorcontrolcenterwithanoverheadcrane.

Heavy equipment.Can cause death or serious personal injury.Exerciseextremecarewhenhandlingthemotorcontrolcenter.Handleuprightonly.Donottilt.Acraneorhoistshouldbeusedifatallpossible.Exerciseallsafetypre-cautionsoutlinedinthefollowingdiscussion.

WARNING

ThefollowingprecautionsmustbetakenwhenevermovinganMCC:

1. Handlethemotorcontrolcenterwithcaretoavoiddamagetocomponentsandtotheframeoritsfinish.

2. Handlethemotorcontrolcenterinanuprightpositiononly.Motorcontrolcentersarenormallyfrontheavyandfrequentlytopheavy.Balancetheloadcarefullyandsteadythemotorcontrolcenter,asnecessary,whilemoving.Somemotorcontrolcenterinteriorsmaycontainheavyequipment,suchastransformersmountedwithin,thatcouldbeadverselyaffectedbytilting.

3. Knowthecapabilitiesofthemovingmeansavailabletohandletheweightofthemotorcontrolcenter.Adequatehandlingfacilitiesshouldbeavailable.Thefollowingtablegivestheapproximateweightsofsingleverticalframesandwillbehelpfulindeterminingtherequiredcapacityofthehandlingmeans.Ifaverticalframecontainspowerfactorcorrectioncapacitors,reactors,oralargetransformer,sufficientadditionalweighthandlingcapacitymustbeallowed.

NEMA 1, Gasketed, and 12 structures only

Frame Weight

20”Wx15”DFrontOnly 550lb.




4. ItisrecommendedthatacraneorhoistbeusedtohandletheMCCifatallpossible.Ifacraneorhoistisnotavailableandotherhandlingmeansarenecessary,extremecaremustbeexercisedtoinsurethattheequipmentissecuredduringthemovementandplacementoperationstopreventtippingandfalling.Jacks,prybars,dollies,rollerlifts,andsimilardevicesallrequiresupplementalblockingbeneaththeMCCandrestraintstopreventtipping.Thesedevicesarenotrecommendedduetothehazardsimplicitintheiruse.



ThefollowingprecautionsshouldbetakenwhenmovinganMCCwithacraneorhoist:

1. Selectrigginglengthstocompensateforanyunequalweightdistributionandtomaintainthemotorcontrolcenterinanuprightposition.

2. Spreaderbarshouldbeusedinconjunctionwithliftingcablestoprovideverticalliftonliftingangletoavoidanglefailureorcrushingorboth.Spreaderbaseisnotfurnishedwithequipment.

3. Donotallowtheanglebetweentheliftingcablesandverticaltoexceed45°asshowninFig.2.

4. Donotpassropesorcablesthroughliftingbrackets.Useonlyslingswithsafetyhooksorshackles.

5. NeverliftanMCCaboveanareawherepersonnelarelocated.

Note:Theheightoftheliftpointabovethespreaderbarshouldbeatleastonehalf“A,”thedistancebetweenliftholes.Thisassuresasafeangleof45degreesorless.

ThefollowingprecautionsshouldbetakenwhenmovinganMCCwithaforklift:

1. Makesuretheloadisproperlybalancedontheforks.2. PlaceprotectivematerialbetweentheMCCandforkliftto

preventbendingandscratching.3. SecurelystraptheMCCtotheforklifttopreventshifting

ortipping.4. Excessivespeedsandsuddenstarts,stops,andturnsmust

beavoidedwhenhandlingtheMCC.5. LifttheMCConlyhighenoughtoclearobstructionson

thefloor.6. Takecaretoavoidcollisionswithstructures,otherequipment,

orpersonnelwhenmovingtheMCC.7. NeverliftanMCCaboveanareawherepersonnelarelocated.

ThefollowingprecautionsshouldbetakenwhenmovinganMCCbyrollingonpipes:

1. Useenoughpeopleandrestrainingdevicestopreventtipping.2. ThesurfaceoverwhichtheMCCisrolledmustbelevel,clean

andfreeofobstructions.NEVER ROLL AN MCC ON ANINCLINED SURFACE.

3. ItshouldberecognizedthatrollinganMCCisespeciallyhazardoustofingers,hands,andfeetandissusceptibletotipping.Measuresshouldbetakentoeliminatethesehazards.

4. Allpipesmustbethesameoutsidediameterandshouldhavenoflatspots.Onlysteelpipeshouldbeusedforthispurpose.

Figure2.Propermethodforliftingamotorcontrolcenter

Figure3.Loadratedsafetyhookandshackle

Figure4.MotorControlCenter,roller,andforklifthandling


WARNING

LiftingHole

LiftingHole

LiftingAngle

LiftPoint

One-half“A”

ormore

NeverExceed45º



2.3 Skid removal

Skidremovalshouldbeperformedjustpriortofinalplacementofthemotorcontrolcenterandisachievedbyfirstremovingthebottomhorizontalwirewaycoverswhichallowsaccesstotheskidlagbolts.AttachcraneriggingtoliftingangleontopofMCCstructure.Applysufficienttensionontheriggingtoremoveallslackwithoutliftingtheequipment.Thisisarecommendedsafetymeasuretoreducethepossibilityoftipping.Thelagboltsmaynowberemoved,theMCClifted,theskidsremoved,theMCCloweredintoplace,andtheanchorboltssecured.Thelastoperationshouldbeperformedwithadequateriggingtensiontopreventtipping.Afteralladditionalshippingsectionsaresecuredinasimilarmanner,sectionsandbusbarsshouldbejoinedinaccordancewiththeinstructionsintheInstallationsectionofthismanual.ClosedoorsandreinstallcoversassoonaspossibletoeliminateintrusionofdirtandforeignmaterialsintotheMCCenclosure.

2.4 Storage

Amotorcontrolcenterorseparateunit,whichisnotinstalledandenergizedimmediately,shouldbestoredinacleandryspacewhereauniformtemperaturepreventscondensation.Preferably,itshouldbestoredinaheatedbuilding,withadequateaircirculationandprotectedfromdirtandwater.Motorcontrolcentersandunitsshouldbestoredwheretheyarenotsubjecttomechanicaldamage.

Ifthemotorcontrolcenteristobestoredforanylengthoftime,priortoinstallation,restorethepackingforprotectionduringthatperiod.Whereconditionspermit,leavethepackingintactuntilthemotorcontrolcenterorsectionsareattheirfinalinstallationposition.Ifthepackingisremoved,coverthetopandopeningsoftheequipmentduringtheconstructionperiodtoprotectthemagainstdustanddebris.

Iftheequipmentistobestoredinacoolordamparea,donotcompletelycovertheequipment,butprovideheattopreventcondensationofmoistureintheequipment.Ifthecontrolcenterhasbeenorderedwithspaceheaters,connecttoatemporaryfeedforheat.Asimplemethodofheatingthemotorcontrolcenterwhenspaceheatersarenotorderedistoplaceastandard120V/15Wlampinsidethebottomofeachverticalsection.

Anunenergizedoutdoormotorcontrolcentershouldbekeptdryinternallybyinstallingtemporaryheating(seepreviousparagraphs),orbyenergizingoptionalself-containedspaceheaters.

Anyscratchesorgougessufferedfromshippingorhandlingshouldbetoucheduptopreventrusting.


WARNING

tiastar Motor Control CenterInstallation


Incoming line connectionswChoosetheshortest,mostdirectroutefromremotemains.w Ifcablescannotbedirectlyroutedtoterminals,provide adequatespaceforclampingthecables.wTorqueincominglinestomainlugsonlyat85ft.-lbs.wTorqueallincomingconnectionstomaincircuitbreakers

andfusibledisconnectsasperthebreakerordisconnectmanufacturer’srecommendations.Thetorquerequirementsarefoundonalabellocatedonthedisconnectingdevice.

Outgoing power and control wiringwDisengageplug-inunitstabsfromverticalbus.Connect controlandpowerwiringtounits.wUsestrandedwire.wLeaveenoughslacktopermitpartialwithdrawalofunittotestpositionformaintenance.wPullwiringbetweenunitsthroughverticalandhorizontal

wirewaysecuringwiresintheverticalwirewaywithwirefromwiretiesprovided.wRoutewiringbetweensectionsthroughthetoporbottom

horizontalwireways.wReinsertplug-inunitstoengagestabs.

Pre-operation checkswTestinsulationresistanceofallcircuitswiththecontrolcenterasground.wRemoverestrainingdevicesfromcontactorsandshunts

fromcurrenttransformers.Makesurethatallpartsofmagneticdevicesoperatefreely.wCheckelectricalinterlocksforpropercontactoperation.wMakesurethateachmotorisconnectedtoitsproperstarter.wCheckallheaterelementsforproperinstallation.wCheckalltimersforpropertimeintervalsettingandcontact

operation.wCheckfusibledisconnectstartersforproperfusesize.wCleanthecontrolcenter.Riditofallextraneousmaterial.Useavacuumcleaner,notcompressedair.wCheck all connections for mechanical and electrical tightness.wCloseallaccessplatesanddoors.

Energizing motor control centerswMakesureallunitdisconnecthandlesandcontrolcentermains areturnedtoOFF.wTurnonremotemains.wTurnonmotorcontrolcentermaincircuitbreakersorfusibledisconnects.wTurnonunitdisconnecthandlesonebyone.wJogmotorstocheckforproperrotation.wAdjustETIBreakers.

Insulation (Megger) test (see page 28)

3 Installation 3.1 Installation quick check list – Indoor MCCs only

ReceivingwInspectpackagefordamage.wAfterunpacking,inspectequipmentfordamageintransit.w Ifdamagedorincomplete,pleasenotifySiemenssalesoffice

withidentificationofparts,descriptionofdamage,andphotographs.

HandlingwSimplifyhandlingbyleavingequipmentonshippingskid.wUsetheliftingangleprovidedformovingtheequipment.wTakecaretousethepropermethodofmovingamotor

controlcenter.

StoragewStoreinaclean,dryspaceatmoderatetemperature.wCoverwithacanvasorheavy-dutyplasticcover.w Ifstorageareaiscoolordamp,coverequipmentcompletely

andheattopreventcondensation.

Location selectionwFlatandlevelfloor.wOverheadclearance.wAccessibilityfrontandrear(ifrequired).wProtectionfromsplashanddrip,dust,andheat.wSpaceforfutureexpansion.wIfbottomconduitentryisused,conduitshouldbeinplace

andstubbedupbeforeequipmentisinstalled.

Installation methodwGroutintothefoundation.wWeldchannelsillstosteellevelingplates.w Imbeddedanchorboltsinthefloor.

Field assembly(Instruction sheet included with shipment)wRemovehardwareandhorizontalbusconnectinglinksfromshippingsplits.w Installfirstshippingsplit.wRemoveendcoverplatesofstructurestobejoined(ifrequired).wCarefullyalignsecondsplitwithfirst.Boltstructurestogetherat fourcornersandmiddle,front,andrear.wRemovehorizontalwirewaybarriertoexposehorizontalbus.wConnecthorizontalbuseswithbuslinks.Torqueboltsto 20ft.-lbs.wGrommettopandbottomhorizontalwireways.wInstallheatercoils.(Checkselectionagainstmotor nameplatedata.)w Installfuses.

Conduit entry at topwRemovetopplatesfromstructure.wCutconduitentryholesintopplates.wReinstalltopplates.w Installconduits

Note: Thischecklistisnotexhaustiveandparticularapplicationsmayrequirefurtherprocedures.



3.2 Operating environment

ThemotorcontrolcenterconformswiththeprovisionsofNEMAStandardICS1-108,AltitudeClass2KMwhichdefinestheusualserviceconditionforelectromagneticcontrol.Itisdesignedforindoorusewherethetemperatureinsidethecontrolcenterishigherthantheambienttemperature.Thecontrolcenteriscapableofcarryingitsratedloadwhentheambienttemperaturedoesnotexceed40°Candthealtitudedoesnotexceed6600feetabovesealevel.Whereunusualserviceconditionsexistorwheretemperatureoraltitudelimitationsareexceeded,thecontrolcenterconstruction,ratings,orprotectionmayrequirealteration.Someexamplesofunusualserviceconditionsareexcessivemoisture,vibration,ordust.

3.3 Site preparation

InstallationshallbeinaccordancewiththeNationalElectricalCode,ANSI,andNFPA70Standards.Unlessthemotorcontrolcenterhasbeendesignedforunusualserviceconditions,itshouldnotbelocatedwhereitwillbeexposedtoambienttemperaturesabove40°C(104°F),corrosiveorexplosivefumes,dust,vapors,drippingorstandingwater,abnormalvibration,shockortilting,orotherunusualoperatingconditions.

Themotorcontrolcentershouldbeinstalledinaclean,dry,heatedplacewithgoodventilationanditshouldbereadilyaccessibleforscheduledmaintenance.Aflat,level,concretesurfaceshouldbepreparedforthemountingsite.Ifthemountingsiteisnotflatandlevel,themotorcontrolcentermustbeshimmedwherenecessarytopreventdistortionofthestructure.

Allconduitenteringfromthebottomshouldbeinplaceandstubbedupabouttwoinchesabovethefinishedfloorlevelbeforeinstallingthecontrolcenter.RefertotheMCCleadsheetplanviewlocatedintheinformationpacketforspecificconduitareadimensions.

Note:Conduitshouldnotextendmorethan21/2inchesabovethefloorsurface.



Figure6.Anchorboltlocationandbottomconduitentry:15”20”

Alldimensionsareshownininchesunlessotherwisespecified.

3.4 Mounting

Motorcontrolcentersmaybemountedbymanydifferentfasteningsystemsincludingtruedropin,castinplace,powderactuated,orthreadedinsertfasteners.SeeFigure6foranchorboltlocations.Theboltpatternisdependentonframewidth,depth,locationintheline-up.RefertothestructuremountingdetailincludedontheL1layoutdrawingleadsheet.ThecoordinationbetweenboltsandtheMCCshouldbeverifiedpriortoattemptinginstallation.Expandableinsertsinpredrilledholesorembedded‘L’boltsarerecommended.

Woodenplugsdrivenintoholesinmasonryorconcretearenotrecommendedforanchoringinsertsandshouldneverbeused.Theboltsizemustbe1/2”.

Groutingthesillchannelsisanothermethodoffastening.Thismethodrequiresthefoundationtobegroovedasshowntoacceptthesillchannels.SeeFigure7fordetails.

Weldingthesteelbaseorsillchannelstoasteelfloorplateisanalternatemountingmethod.SeeFigure6fordetails.

Figure5.Topconduitentry:15”20”

Note:Reartopplatecanbeusedforconduiton20”deepMCC.Cablescanthenberunfromreartofrontthroughoptionalwirewayholestoconnectunits.

Alldimensionsshownininches.

20

20

17

17

3

3

3 3

2 Z\v 2 Z\v5Z\x14Z\x

19ZZ\zn

13ZZ\zn

16ZZ\zn

Mtg. Holes

(Typ.)1 Z\x

(Typ.)1 Z\x

Vertical Bus

14ZZ\znSpace Open forConduit Entry

Space Open forConduit Entry

11ZZ\zn

5Z\x

8ZZ\zn

14Z\x

Vertical Bus

Typical9ZZ\zn

6 B\,

Channel SillChannel Sill Remove bottom unit to pull wire.

Shadedareaindicatesconduitentry.



Figure8.Weldedinstallation

Reversiblebottomend-coverplatescoverthebottomhorizontalwireway,groundbusopening,andtheendchannels.Theyperformthisfunctionifthesectionismountedonitssills,orifthesectionwithsillsisgroutedintothefloor,theplatesaresimplyrotated180°.SeeFigure9.

Ifthecontrolcenterislocatedonstructuralsteelplatformsovergrids,itisrecommendedthatthecenterbemodifiedwithbottomplates.

Note:TocomplywithNEC380-8(a)HeightRequirements,thecustomershouldascertainthattheoperatingpersonnel’sworkingbaseisatthesamelevelastheMCCbase.

3.5 Top and bottom covers

Topcoversareprovidedonallmotorcontrolcentersasanintegralpartoftheenclosure.BottomcoversaresuppliedoncertaintypesofconstructionsuchasNEMA12.Thesecoversshouldberemovedonlyforthepurposeofpiercingholesforconduitorwireentryandmustbeimmediatelyreplacedtoreducethepossibilitythatfallingmaterial,tools,orpersonnelcouldunintentionallycontactthebussystemorotherliveparts.

Figure7.GroutingmethodoffasteningMotorControlCenter

Figure9.Reversiblebottomend-coverplates

A

A

6”3”

Typ. (4) Corners Typ. (4) Places

Bottom Filler

MCC Frame

Steel Floor Plate

MotorControlCenter

SillChannel

Grooves



3.6 Installation of seismic qualified structures

Siemens tiastar MCCs are qualified to withstand seismic activity as specified in IBC 2012, CBC 2013, and IEEE 693. This includes all tiastar MCCs, all NEMA types and MCC sizes. tiastar MCCs are rated at importance factor 1.5.1 The seismic qualifications include mounting locations from ground level to roof top.

3.7 Joining shipping sections

Shipping sections consist of up to four vertical frames shipped as a single unit. It is often necessary to join two or more shipping sections at the job site. All necessary electrical and structural joining components are provided and the following procedures are recommended.

1. Position the first shipping section into place on the foundationand level.

2. Remove the front horizontal bus barrier and the side covers(if applicable) from the end(s) to be joined. If the rear isaccessible, the back cover plates should be removed fromthe two adjoining sections.

3. Position the second shipping section on the foundationadjacent to the first and level it. The horizontal bus shouldbe inspected for proper positioning and alignment atthis time.

4. Bolt structures together at six points (see Figure 11). Ifaccess to the rear of the structures is restricted, the rearcenter bolt may be omitted.

Note: When aligning different depths of structures (i.e. 15” front only or 20” deep front only), align the fronts of the structures and bolt together using front three bolts.

5. Assemble the bus bar links to join the horizontal power busand neutral bus, if supplied, in the two shipping sections asshown on page 15. The horizontal and neutral buses maydiffer in size, material, or plating, therefore, the links mustbe matched to the proper bars. All links and associatedmounting hardware are provided with the motor controlcenter.

6. Torque all bus connections to 20 ft. lbs.7. If the motor control center has interwiring, connect the

interunit wiring between shipping sections.8. Join the ground bus between the two adjacent sections, if

supplied. The Ground Bus Section in the manual detailsthis procedure.

9. If there are other shipping sections to be joined, repeatsteps 1 through 8 above.

10. Secure the motor control center to the foundation.11. NEMA 3R enclosure sections should be securely joined and

sealed to prohibit intrusion of dust and moisture.

3.8 Ground bus

All hardware and links are supplied for joining the ground bus between two shipping sections. This joining may be accomplished by loosening the screw securing the connection link so that the link pivots freely. Remove the screw securing the ground bus in the adjacent frame to which the link will attach. Pivot the free end of the link such that the hole is aligned with the bolt, then reassemble the screw and link assembly. Tighten hardware. See Figure 10.

1 Importance factor 1.5 identifies components whose post-event operation is essential to supporting life, safety, and/or if the components contain materials that would be dangerous to building occupants if released during an earthquake.

Figure 10. 300A and 600A horizontal ground bus connection

Hazardous voltage.Will cause death or serious personal injury.Turn off power before working on thisequipment.

DANGER

MCC StructureSteel Member

Horizontal GroundBus Bar

Ground Bus BarSplice Link

Taptite ScrewGround Splice Kit Shipped Boltedto Ground Bus as shown.

The motor control center should be anchored to the floor with appropriate hardware and 1/2” bolts. For seismically qualified MCC installations, all mounting holes supplied in the standard base channel sills must be used. Welding is also an acceptable method of mounting, if the installation instructions are followed.



Figure11

Note:Donotusegrommetsonthebackhorizontalwirewayopeningsof‘FrontOnly’sections.Alldimensionsareshownininchesunlessotherwisespecified.

See detail Ato left

Bolt (6 pieces) B\zn – 18 x C\v lg.

Removablelifting angle

C\zn GrommetL= 8 M\, D45130-1

C\, GrommetL= 8 M\, D45130-11

C\zn GrommetL= 4Z\v D45130-4

Detail A

C\zn GrommetL= 7Z\, D45130-2

C\zn GrommetL= 3M\, D45130-3

Detail B

C\zn GrommetL= 3M\, D45130-2

C\zn GrommetL= 3M\, D45130-3Omit when ground busor neutral bus is supplied

See detail Bto left

Figure11



Figure12.1200A,1600AL1connection

3.9 Splice kits

Note:Forcompletesplicekitinstallationdetails,refertoinstructionssuppliedwithsplicekits.

Horizontal Bus Splice

Splice Bar Adapter

Parallel HorizontalBelleville Washer

Bolts

Figure13.1200A,1600AL2andL3connection1200A,1600Aneutralbusconnection

Figure14.600A,800Amainbusconnection600A,800Aneutralbusconnection

600Ahorizontalgroundbusconnection

Bus Bar Clamp

Horizontal Bus Splice

Parallel HorizontalBus Bar (L2 & L3)

Belleville Washer Nut

Belleville Washer Nut

Bus Bar Clamp

HorizontalBus Bar

HorizontalBus Splice



3.10 Pull box installation

RefertoFigure15forthefollowingprocedure.

1. Removetopfrontconduitplate(A)frommotorcontrolcenterstructurebyremovingtwoscrews(B).Therearetwofrontplateson.back-to-back.motorcontrolcenters.

2. Removetworearscrews(C).3. Removethetoptwoscrewsholdingonthebusinsulator

cover(E).Dothistobothsidesofaback-to-back”motorcontrolcenter.

4. Installbarrier(F)andreplacethescrewsfromstep3.5. Removetopplateofpullbox(G).6. PlacepullboxonMCCandscrewdownusingfour1/4-20x

3/4”taptitescrews.Therearmountingholesmayhavetobedrilledon“FrontOnly”motorcontrolcenters.UsethePullBox/TopHatasadrillingtemplate.

7. Replacetopplatethatwasremovedinstepfive.

3.11 Incoming power connections

Note:Removetopcoversbeforecuttingholesforconduittopreventmetalchipsfromfallingintothemotorcontrolcenter.Conduitsshouldbecarefullyinstalledtopreventmoistureorwaterfromenteringandaccumulatingwithintheenclosure.Allconduits(includingstubs)shouldbebondedtothemotorcontrolcenter.Afterallshippingsectionsareinplace,leveled,andjoinedtogetherintoasinglemotorcontrolcenter,cablesmaybepulledandtopentryconduitmaybeinstalled.Bottomentryconduitwillhavebeenstubbedthroughthefloorattheproperlocationspriortoplacementofthemotorcontrolcenter.Theincomingsourcecablesmaybeconnectedatthistime,however,thepowersourcedisconnectingmeansmustremainopenandlockedoutuntilallwiringiscompletedandtheentiresystemhasbeencheckedout.

Caremustbeexercisedtomakesurethatthelugswhichhavebeenprovidedaresuitableforusewiththetypeofcablesbeinginstalledinthemotorcontrolcenter.Ifcrimplugsaresupplied,useonlythecrimpingtoolrecommendedbythelugmanufacturer.

Careshouldbeexercisedinstrippinginsulationfromtheconductorstopreventnickingtheconductor.Foraluminum,cleanalloxidefromthestrippedportionandapplyinhibitingcompoundatonce.Tightenallscrewlugsandboltedelectricalconnectionstothespecifiedtorquelistedinthetableinthemaintenancesectionofthisinstructionmanual.

Tominimizethelengthofunsupportedcable,theshortest,mostdirectroutingshouldbechosen.However,thelargestpracticalbendingradiishouldbemaintainedtoavoiddamagingtheinsulationandtoavoidcausingterminalstoloosen.Allcablesenteringthemotorcontrolcentermustbeadequatelysupportedandrestrainedtowithstandthemaximumfaultcurrentcapableofbeingdeliveredbythesource.Therecommendeddistancesbetweenstrapsfor80poundratedstrapis6inchesfor25KAbracing,4inchesfor42KAbracingand3inchesfor65KAbracing.Usingastrapratedlessthan80poundswillrequirethespacingdistancestobereduced.For100KAbracing,cablesmustbesupportedinaccordancewiththespecialinstructionsprovidedwiththemotorcontrolcenter.

Hazardous voltage.Will cause death or serious injury.Turnoffpowerbeforeworkingonthisequipment.

DANGER



Figure15

Top ViewTop View

Front Top PlateRemoved

Front View(Top Wireway Door –

Not Shown)

Front View(Top Wireway Door –

Not Shown andBarrier F Installed)

Pull Box / Top Hat

Front

MCC

F

E

G

DE

D

F

F

C

H

A

tiastar Motor Control Center


3.12 Incoming line termination arrangements –Main lugsTop main lugs only can be moved from one section to anotherin the field without drilling holes in bus or structure.

Horizontal lugs are available with 600A bus, 42,000A symmetrical bus bracing only.

Note: Special lugs such as NEMA 2-hole compression lugs, can be accommodated. Consult factory for space requirements.

Amp/Bracing (A/K) Location IncomingCable size

Fig. ref.Next page

Wire bendingSpace dim. A

Total assemblyHeight dim. B

Required unitSpace dim. C

600A/42K Top Qty = 2#4 - 350kcmi CU

16 13 12 0

600A/42K-65K Top Qty = 2#2 - 600kcmi CU

17 16 24 12

600A/85-100K TopQty = 2#2 - 600kcmi CU

18 20 30 18

600A/42K1 Bottom Qty = 2#4 - 350kcmi CU

19 13 18 12

600A/65K1 Bottom Qty = 2#4 - 350kcmi CU

19 13 24 18


17 16 24 12


18 20 30 18

800A/42K-65K2 Bottom Qty = 2#2 - 600kcmi CU

20 18 30 24


18 20 30 18

1200A/42K-65K2 Bottom Qty = 3#2 - 600kcmi CU

20 18 30 24


18 20 30 18

1600A/42K-100K BottomQty = 4#2 - 600kcmi CU

20 18 30 24

2000A/42K-100K Top Qty = 6#2

-

600kcmi CU21 29 48 36

2000A/42K-100K Bottom Qty = 6#2 - 600kcmi CU

22 46 72 72


21 29 48 36

2500A/42K-100K Bottom Qty = 6#2 - 600kcmi CU

22 46 72 72

1 Space behind structure not available.2 Entire rear of structure not available.Optional lugs available. Contact factory for size and rating.

Installation




3.12 Main lugs

Installation

Figure16 Figure17 Figure18 Figure19

Figure20 Figure21 Figure22



All dimensions are shown in inches unless otherwise specified.

3.13 Incoming line termination arrangements –Main circuit breakersMolded Case Thermal Magnetic circuit breakers, Molded Case Solid State circuit breakers, and Insulated Case WL Power circuit breakers can be used as mains in the MCC. These circuit breakers are 80% rated, however, 100% rated options are also available (see below).

Installation

1 Space in rear of structure not available.2 Entire rear of structure not available3 Molded case circuit breakers.4 WL power circuit breakers.

5 15-25A lug size 12-10AL, 14-10CU, 30-100A, 10-1/0 CU. 6 800A-1200A not available in back to back bottom mounting. 7 Stab opening at bottom of unit not available in rear.8 All circuit breakers are calibrated for 40oC

Optional lugs available. Contact factory for size and rating.

Circuit breaker frame Location Incoming cable size

Fig. ref.next pg.

Wire bending space dim. A

Total assembly height dim. B

Required unitspace dim. C

125A Top Qty = 1 5

#3 - 3/0 CU23 14 24 12

125A Bottom Qty = 1 5

#3 - 3/0 CU26 8 24 18

250A Top Qty = 1 #6 - 350kcmil CU

24 15 30 18

250A Bottom Qty = 1#6 - 350kcmil CU

15 36 30

400A 7 8 Top Qty = 2 3/0 - 500kcmil CU

24 15 30 18

400A 7 8 Bottom Qty = 2 3/0 - 500kcmil CU

28 15 42 36

600A 7 8 Top Qty = 2 3/0 - 500kcmil CU

24 15 30 18

600A 7 8 Bottom Qty = 2 3/0 - 500kcmil CU

28 15 42 36

800A 1 8 Top Qty = 3#1 - 500kcmil CU

25 15 48 36

800A 2 6 8 Bottom Qty = 3 #1 - 500kcmil CU

29 22 54 48

1200A 1 8 Top Qty = 4 250 - 500kcmil CU

25 16 48 36

1200A 2 3 6 8 Bottom Qty = 4 250 - 500kcmil CU

29 22 54 48

1600A 3 8 Top Qty = 4 300 - 600kcmil CU

32 16 90 72

1600A 3 8 BottomQty = 4 300 - 600kcmil CU

33 16 90 72

2000A 3 TopQty = 6300 - 600kcmil CU

30 19 70 72

2000A 3 BottomQty = 6300 - 600kcmil CU

33 26 90 72


30 16 90 72


31 16 90 72


30 19 90 72


31 26 90 72

2500A 4 TopQty = 6300 600kcmil

30 19 90 72

2500A 4 BottomQty = 6300 600kcmil

31 26 90 72

27




Installation

3.13 Main circuit breakers

Figure23 Figure24 Figure25 Figure26 Figure27 Figure28

Figure31Figure29 Figure30 Figure32

20

A

C

12

6

B

Figure33

A

12

CB

20

6




3.14 Incoming line arrangements – Main disconnect switches

Main fusible switches consist of the following:• 600A to 100A, Class R fuse clips • 200A to 600A, Class R fuse holder • 800A to 1200A, Class L fuse holder

Fusible disconnect Switch/clips Location

Incomingcable size

Fig ref.Next pg.

Wire bendingSpace dim. A

Total assemblyHeight dim. B

Required unitSpace dim. C

60A/30A or 60A Top Qty = 1#14 - #14 CU

34 14 24 12

60A/30A or 60A Bottom Qty = 1#14 - #14 CU

39 8 24 18

100A/100A Top Qty =1#14 - #14 CU

35 13 30 18

100A/100A Bottom Qty = 1#14 - #14 CU

40 7 30 24

200A/200A Top Qty = 1 #6 - 350kcmil CU

36 16 42 30

200A/200A Bottom Qty = 1 #6 - 350kcmil CU

41 10 48 42

400A/400A Top Qty = 23/0 - 500kcmil CU

37 14 48 36

400A/400A Bottom Qty = 23/0 - 500kcmil CU

42 14 60 54

600A/600A Top Qty = 23/0 - 500kcmil CU

37 14 48 36

600A/600A Bottom Qty = 23/0 - 500kcmil CU

42 14 60 54

800A/800A1 Top Qty = 3250-500kcmil CU

44 22 90 72

800A/800A1 Bottom Qty = 3250-500kcmil CU

43 22 90 72

1200A/1200A1 Top Qty = 4250-500kcmil CU

44 22 90 72

1200A/1200A1 Bottom Qty = 4250-500kcmil CU

43 22 90 72

1 Space in rear of structure not available. Optional lugs available. Contact factory for size and rating.

Installation




Installation

3.14 Main disconnect switches

Figure 34 Figure 35 Figure 36 Figure 37 Figure 38

Figure 40 Figure 41 Figure 42 Figure 43 Figure 44

Figure 39



Figure46.Type“C”wiringterminal

3.15 Load and control wiring

Allinterconnectionsbetweendeviceswithineachcontrolunitareprewiredatthefactory.Fieldwiringtoeachcontrolunitshouldbemadeinaccordancewiththewiringdiagramindicatedontheleadsheetforthatparticularunit.Theleadsheetandwiringdiagramsareincludedintheinformationpacket.Whenwiringorperforminganymaintenanceonplug-inunits,disengagethestabsbywithdrawingtheunit.Refertopage25,“Plug-InUnitRemoval”section.Wiringdonewiththeunitinthispositionwillensureadequatecableslacktoallowunitwithdrawaltothesamepositionwhenfuturemaintenanceisrequired.Alwaysusestrandedwire.

Theverticalwiringbetweencontrolunitsorbetweenacontrolunitandconduitshouldbepulledthroughtheverticalwirewayontherightsideoftheframe.Thesewiresshouldthenbetiedorlacedtogetherandtheresultingbundlethensecurelyfastenedtothewiresupports.Interconnectingwiringbetweencontrolunitsshouldberoutedthroughthetoporbottomhorizontalwireways.

InstallationandwiringmustbeinaccordancewithNFPA-70,ANSI,theNationalElectricalCode,andanyotherapplicableregionalcodesorregulations.

3.15.1 NEMA Type A wiringMotorcontrolcenterswithNEMATypeAwiringdonotincludeterminalblocks.Allfieldwiring,bothpowerandcontrol,shouldbeconnecteddirectlytotheindividualcomponents.

3.15.2 NEMA Type B wiringMotorControlCenterswithNEMAtypeBwiringincludeterminalblocksforcontrolcircuitconnections.

NEMATypeBuserfieldloadwiringforcombinationmotorcontrolunitssize3orsmallershallbedesignatedasB-DorB-T,accordingtothefollowing:

B-Dconnectsdirectlytothedeviceterminals,whicharelocatedimmediatelyadjacent,andreadilyaccessible,totheverticalwireway.

B-Tconnectsdirectlytoaloadterminalblockin,oradjacentto,theunit.

3.15.3 NEMA Type C wiring

MotorcontrolcentersequippedwithNEMATypeCwiringincludeallthefeaturesdescribedforNEMAtypeBwiringinadditiontomasterterminalblockslocatedateitherthetoporbottomhorizontalwireway.(Figure46)Motorcontrolcenterunitsarefactorywiredtotheirmasterterminalblocks.

Themotorcontrolcenterleadsheet,locatedintheinformationpacket,indicatesthetypeofwiringprovidedforthisinstallation.

Figure 45.Masterterminalblocklocation

Field Terminations: NEMA Classes and Types

Description Class I types A B-D B-T C

Class II typesB-D B-T C

Terminals Furnished

Forallcontrolconnections XXX XXX

ForstarterloadconnectionsSizes1thru3 XX XX

Terminals Mounted

Oncontrolunit XXX XXX

Inmasterterminalcompartment X X

Interwiring

Betweenunitsinthesamemotorcontrolcenter XXX

Installation



Figure47.Rackingleverallowseasyunitremoval

3.16 Field additions

Fieldadditionsmaybemadetothemotorcontrolcenterifthecurrentratingofthemainorverticalbusisnotexceeded.Thepreparationofthefloorandconduitisthesameasinanewinstallation.Anynewshippingsectionwillcontainallofthenecessaryhardwareandbusconnectinglinks.De-energizetheexistingmotorcontrolcenterandremovethetopandbottomsidecoversfromthenewandexistingverticalframeswhicharetobejoined.Afterjoiningthestructurespertheinstructionsintheinstallationsectionofthismanual,performthepre-energizationchecksoutlinedintheoperationsectionofthisinstructionmanual.

Additionstomotorcontrolcentersfallintotwogeneralcategories:additionsofstructuresandadditionsorreplacementofplug-inunits.Theadditionofstructuresissimilartotheinstallationofmotorcontrolcenterswhichhavebeenshippedinseveralsections.Whenmountingmethodsormodelsofnewandexistingsectionsdiffer,caremustbeexercisedtoensureproperalignmentofhorizontalbus.Thenewstructuresarethentreatedthesameasinanewinstallation.ThisisdiscussedindetailintheJoiningShippingSectionsportionofthismanual.

3.17 Plug-in unit removal

1. Putthedisconnectoperatinghandleinthe“OFF”position(Fig.47).Theinterlockingmechanismwillnotpermitremovingorinsertingtheunitwiththehandleinthe“ON”position.

2. Unscrewthemulti-turnlatchonbottomplateoftheunit.Rotatethelatchuntilitdisengagesfromtheseparatorangle.Note:Highdensity(6”)unitsdonotutilizeamulti-turnlatch.

3. Openverticalwirewaydoor.4. Movetheunittothe“test”positionbyopeningtheracking

lever(Fig.47)onthetopbarrierplatewhilepullingonthe supplementaryinstallationhandleonthebottombarrierplate. Theunitcanbepadlockedinthetestposition(Figure54).

5. Disconnectcontrolandloadwiring.6. Removetheunitbytiltingandslidingout.7. Pilotdevicesaremountedinapilotdevicepanelattachesto

theunitdoorwithtwocaptivescrews(Figure48).Toremove thepilotdevicepanelfromtheunitdoor,loosenthebottom screwacoupleofturns,thenloosenthetopscrewtorelease thetopofthepilotdevicepanel.Tiltthetopofthepilotdevice panelawayfromthebackoftheunitdoorandliftthepilot devicepaneloffoftheunitdoor.Thetopmountingscrewis captivetotheunitdoorwhilethebottommountingscrewis captivetothepilotdevicepanel.

8. Oncethepilotdevicepanelhasbeenremovedfromtheunitdoor,tabslocatedonthemetalpilotdevicepanelallowthepilotdevicesmountedonthemotorcontrolcenterunitforunitremovalandservice(Figure50).

9. Tore-installthepilotdevicepanelontheunitdoor,placethebottompilotdevicepanelscrewintheslotatthebottomofthepilotdevicepanelcutout.Pushthepilotdevicepanelagainsttheinsideoftheunitdoorandtightenbothpilotdevicepanelmountingscrews.

Figure 48

Figure 49 Figure 50

Installation

Captivescrews

Hazardous voltage.Will cause death or serious personal injury.Energizedverticalbusmaybepartiallyexposedthroughtheaccessholesinthebarrierwhentheunitisnotfullyinserted.Useextremecautionwhenperforminganywiringormaintenancewiththeunitwithdrawn.

DANGER

wraykc

Highlight

wraykc

Highlight



10. Ifsoequipped,theSAMMSpanelmaybereleasedbylooseningthecaptivescrewafewturns,thenswingingthepaneltotherighttogainaccesstocomponentsmountedbehindit.

11. Thedrawoutunitshouldbeprotectedfromabuse,dust,andmoisturewhileitisoutofthemotorcontrol.

12. Latchunitdooroveropenspacebyrotatingthetop1/4turnlatchsothatthearrowispointingup.

3.18 Plug-in unit addition

1. Removetheblankdoorbyremovingthehingepins,closingthedoorhalfway,andpullingitoffthehinges.

2. Removethedoorgasketangle(intermediateangle)byremovingthescrewwhichfastensittotheseparatorangleandtippingslightlytoremovetheformedtabattopfromtheslotintheshelfbracketabove.

3. Ifnecessary,installtheunitsupportassemblybyinsertingtheshelfbracketsataslightangleintotheappropriateholesintheverticalbussupportangleandsnappingintoplace.Securethesupportassemblywiththetwoscrewsprovided.Onescrewfastenstheright-handshelfbrackettotheverticalbussupportangle.Thesecondscrewfastenstheseparatorangletotheleftsideofthestructure.

4. Removetheappropriateunitstabholecovers.5. Mounttheunitdoorbyplacingitonthehingeswhilehalf

open.Opencompletelyandinsertthehingepins.6. Plug-In:Movetheunitoperatorhandletothe“OFF”position.

Slidethecontrolunitintoplaceonthesupportassembly.Completeunitengagementbyslidingoverthestopontheshelfbracketswiththesupplementaryinstallationhandleonthebottombarrierplateandclosingtherackingleverinthetopbarrierplate.Engagethemulti-turnlockinglatchonthebottomplateoftheunittotheseparatorangleandtightenthescrew.

Note:Highdensity(6”)unitsdonotutilizeamulti-turnlatch.7. Fixmounted:Forthelocationofthepanelmountingbrackets,

seethefixedmountedpaneldiagraminFigure55.Usethe bracketwiththetabforthetopmountingholes.

8. Followproceduresforconnectingoutgoingpowerandcontrolwiring.

9. Closethedoorandperformallpre-operationcheckprocedures.

Figure51.Operatinghandlein“OFF"position

Figure52.Terminalblocksonswingplate

Figure53.Pullapartterminalblocks

Figure54.Padlockingin“test”position

Figure55.Fixedmountedpaneldiagram

Installation


DANGER

Left Hand Bracket(Top)

Right Hand Bracket(Top)

Slotted HexWasher HeadScrew(4 Places)

Right Hand Bracket(Bottom)Hex Head

Cap Screw(4 Places)

Fixed Mounted Panel

Left Hand Bracket(Bottom)



3.19 High density unit installation

3.19.1 Coil removal

1. Foreasycoilreplacement,removetheunitfromthestructure.2. Loosenscrew“A”whichsecuresthecover.3. RotatethecoverasshowninFigure56 aroundthepivotpoint.4. Disconnectwiringtocoil.5. Removecoilthroughtopofunit.

3.19.3 Arc cover access slots

WithdrawtheunitforaccesstothearccoverscrewsthroughtheslotsintheunitbottomplateasshowninFigure58.

Figure 59

Figure 56

3.19.2 Terminal block swing plate

1. Towiretheunit,rotatetheterminalblockswingplateasshown inFigure57.

2. Routethewiresfromheverticalwirewayintotheunitbehindtherightunitsideangle.

Figure 57

Figure 58

3.19.4 Hinge installation

1. Removetheexistinghinge(ifpresent)inthe6”space.2. Installtheunitsupportbracketper89-H2Binstallation

manualunitonly.3. Locateandinstallthenewhingewiththetwomounting

screws.4. Installthedoorusingtwonewhingepinssuppliedwith

theunit.

3.19.5 Unit Access For Maintenance

1. Removetheunitfromthestructure.2. Loosenscrew"B"showninFigure59.3. Liftthehandlebracketandpullforwardtodisengage.4. RotatetheleftsideoftheunitopenasshowninFigure59.5. Whenclosingtheunit,thehandlemustbeinthe"OFF"position.

Installation


DANGER

Screw“A”

Handlebracket Screw“B”



3.20 Insulation (Megger) test

Takeresistancemeasurementsbeforeamotorcontrolcenterisplacedintoservice,afterinstallationormaintenance.Whenperformingresistancemeasurementsinmotorcontrolcentersuseaninsulationtester(megger)withapotentialof500-1000V.

Takereadingsbetweeneachphaseandfromeachphaseto ground.Thisshouldbedonewiththebranchdisconnects"OFF" andagain,withthebranchdisconnects"ON".

3.20.1 Branch disconnects "OFF"Typicallyreadingstakenwithalldisconnectsinthe"OFF"positionshouldbebetween5-20megaohms.Newequipmentwhichwasstoredinadampareamayregisterloweruponinitialstartup.Ifreadingsareaboveonemegaohmduringstart-upthefollowingproceduremaybeobservedtohelpdrythemotorcontrolcenter.Energizeseveralindividualcontrolunits.Ifindividualreadingsareaboveonemegaohm,energizeadditionalunits.Aftertheequipmenthasbeeninoperationfor48hours,thereadingsshouldbeinthe5-20megaohmrange.Ifatanytimemeggerreadingsarebelow5megaohm(onemegohmduringstart-up)consultyourlocalSiemenssalesoffice.

3.20.2 Branch disconnects "ON"Beforetakingareadingwiththebranchdisconnects"ON",disconnectalldevicescompletingcircuitsbetweenphasesorbetweenphasesandneutralsuchascontroltransformers. Readingsobservedmaybeslightlylowerthanthe"OFF"readings,butthestart-uponemegohmlowerlimitstillapplies.

Recordthemeggerreadingsonthetablesbelow.Abruptchangesinresistivevaluesmaybeanindicationofpotentialfailure.Evensuddenchangeswithinthe5-20megaohmrangemaybeanadvancesignalofinsulationfailure.Theearlydetectionoffaultyinsulationcomponentscansavecostlyrepairsanddowntime.

Branch Disconnects OFF

Date

Phase to Phase

A-B

B-C

C-A

Phase to Ground

A-GND

B-GND

C-GND

Branch Disconnects ON

Date

Phase to Phase

A-B

B-C

C-A

Phase to Ground

A-GND

B-GND

C-GND

Installation

Hazardous voltage.Will cause death or serious personal injury.ThemaindisconnectmustbeintheOFFpositionduringallmeggertestingofthemotorcontrolcenter.Devicessuchassolid-statecomponents,capacitorunits,oranyotherdeviceswhicharenotdesignedtowithstandmeggervoltage,shouldbedisconnectedbeforetestingtherestofthemotorcontrolcenter.

DANGER



Hazardous voltage.Will cause death or serious personal injury.Dielectricormeggertestingshouldonlybeconductedbyqualifiedpersonnel.Refertotestdeviceinstructionsforsafetyinstructions.

DANGER

Hazardous voltage.Will cause death or serious personal injury.Neveroperateanycontactor,relay,orswitchunlessitsarcchuteisproperlyinstalledandsecuredandundamaged.

DANGER

Explosive hazard.Installation of fuses of insufficient interruption rating can cause death or serious personal injury,Toensurepropercoordinationandsufficientcapacitytointerrupttheavailablefaultcurrent,alwaysinstallreplacementfuseswithULclass,continuouscurrentrating,type,andinterruptingcapacityidenticaltotheoriginal.Neverdefeatrejectionmechanismswhichareprovidedtopreventtheinstallationofthewrongtypeoffuses.

WARNING

Operation

4 Operation

4.1 Pre-energization checks

Afterinstallation,fieldaddition,ormaintenance,performthefollowingchecksbeforeenergizingequipment:1.Check all connections for tightness, both mechanical and

electrical. Factory connections may loosen during shipmentand storage. It is of utmost importance to inspect allconnections and bolted joints for tightness prior toenergizing the equipment.

2.Compareallcircuitsforagreementwiththewiringdiagramswhichareprovidedwiththemotorcontrolcenter.Besurethateachmotorisconnectedtoitsintendedstarter.

3.Verifythatinsertsorautomaticshuttersareinstalledinallexposedopeningsintheverticalbusbarriers.

4.Inspectthemotorcontrolcenterforaccumulationofdustordirt.Ifrequired,cleantheMCCasexplainedintheMaintenancesectionofthismanual.

5.Testthemotorcontrolcenterpowercircuitforpossibleshortcircuitsandgrounds.Adielectrictestat2timesthenominalsystemvoltageplus1000voltsappliedforoneminutebetweenphasesandfromallphasestogroundisthepreferredmethod.Themaximumallowableleakagecurrentis1.5mAper1000testvoltsapplied.Ifahigh-pottesterisnotavailable,thenameggertestusinga500or1000voltmeggerisasuitablesecondchoice.Theminimumallowableresistancemeasuredfromphasetophaseandfromphasetogroundisonemegohm.Besuretodisconnectanycontroldevices,controlpowertransformer,etc,fromthecircuitwhichcouldbedamagedbythetestvoltage.

6.Manuallyexerciseallswitches,circuitbreakers,contactors,magneticdevices,andotheroperatingmechanismsseveraltimestomakecertaintheyareproperlyalignedandoperatefreely.Somecontactorsareshippedwithrestrainingdevicestominimizevibrationeffectsduringshipment.Besurethat

allsuchrestraintshavebeenremoved.Noneofthesedevicesmusteverbeblockedinthe“ON”position.Checkallelectricalinterlocksforpropercontactoperation.Checkallmechanicalinterlocksforproperfreedomandoperation.

7. Checkalltimersforproperintervalsettingandcontactoperation.

8. Checkoverloadrelaytripsettingorheatersizeandverifythattheyareadjustedpertheinstructionsgivenfortheoverloadrelayinthisinstructionmanual.

9. CheckallpowercircuitfusesandcontrolfusestoverifythattheyaresizedinaccordancewiththeNationalElectricalCodeapplicationrequirements.ClassK-9andHfusesarenotrecommended.

10. Currenttransformerstowhichcustomerdeviceswillbeconnected,areshippedwiththeirsecondariesshorted.Allshortingdevicesshouldberemovedwhenthesecondaryconnectionstothesetransformersarecompleted.Makesurethatthecurrenttransformersecondaryiscomplete.Currenttransformersmustnotbeenergizedwiththeirsecondariesopencircuited.

11. Checkalldevicesformissingorbrokenparts,properspringtension,freemovement,rustingorcorrosion,dirt,andexcessivewear.Makeallnecessaryrepairs.

12. Checkallelectricalrelays,meters,andinstrumentstoverifythatconnectionsaremadeproperlyandthatthedevicesfunctionproperly.Verifythatadjustablevoltageandcurrenttripmechanismsaresettothepropervalues.

13. Makesurethatnofuses,overloadrelays,incompletesequencerelays,shunttrips,groundfaultprotectionassemblies,electricalinterlocks,ortripcontactsfromanyofthesedevicesarestrapped,bypassed,ordefeatedinanymanner.

14. Turnallcircuitbreakersandfusibleswitchestothe“OFF”position.

15. Makesurethatallbarriers,braces,andshieldsareinstalledintheequipmentasintended.

16. Checktheintegrityofallbusmountingmeansandcableconnectionstothebus.Makecertainthatfieldwiringisclearoflinebusandphysicallysecuredtowithstandtheeffectsofthelargestfaultcurrentwhichthesupplysystemiscapableofdelivering.Makesurethatcontrolwiresorpowercablesarenottouchingthepowerbus.



17. Verifythatallgroundconnectionshavebeenproperlymade.Thesectionsofthemotorcontrolcenterwhichwereshippedseparatelymustbeconnectedinsuchawaytoassureacontinuousgroundingpath.

18. Installcovers,installunits,closeandsecuredoors,makecertainthatnowiresarepinchedandthatallenclosurepartsareproperlyalignedandsecured.

19. Makesurethedoorinterlocksonalldisconnectoperatorsareproperlyadjustedandsecured.Ifadjustmentisrequired,usetheprocedureexplainedintheMaintenancesectionofthisinstructionmanual.

20. Disconnectanysafetygroundswhichhavebeenconnectedtothepowerbus.

21. Checkallconnectionsformechanicalandelectricaltightness.

4.2 Energizing equipment

1. Inordertominimizeriskofinjuryordamage,orboth,thereshouldbenoloadonthemotorcontrolcenterwhenitisenergized.Turnoffallofthedownstreamleads,includingthosesuchasdistributionequipmentandotherdeviceswhichareremotefromthemotorcontrolcenter.

2. Theequipmentshouldbeenergizedinsequencebystartingatthesourceendofthesystemandworkingtowardstheloadend.Inotherwords,energizethemaindevices,thenthefeederdevices,andthenthebranch-circuitdevices.Withbarriers(ifapplicable)inplace,andunitdoorsclosed

andlatched,turnthedevicesonwithafirmpositivemotion.Protectivedevicesthatarenotquick-actingshouldnotbe “teased”intotheclosedposition.

3. Afteralldisconnectdeviceshavebeenclosed,loadssuchaslightingcircuits,starters,contactors,heaters,andmotors,maybeturnedontoverifythatthesystemoperatesasintended.

4.3 Permissible loading of motor control centers

1. Formotorcontrolcenterswithoutmainovercurrentprotectivedevices,thetotalcontinuousloadcurrentthroughthehorizontalbusshouldnotexceedthecurrentratingofthemotorcontrolcenter.

2. Formotorcontrolcenterswithasinglemainovercurrentprotectivedevice,thetotalcontinuousloadcurrentontheprotectivedeviceshouldnotexceed80percentofitsampereratingunlessthedeviceisratedtocarry100percentofitsampererating,inanenclosure.

3. Formotorcontrolcenterswithmultiplemainovercurrentprotectivedevices,thetotalcontinuouscurrentthroughthehorizontalbusshouldnotexceedthecurrentratingofthemotorcontrolcenter.Thetotalcontinuousloadcurrentoneachovercurrentprotectivedeviceshouldnotexceed80percentofitsampereratingunlessthedeviceisratedtocarry100percentofitsampererating,inanenclosure.

4. Forbranch-circuitovercurrentprotectivedevicesinamotorcontrolcenter,thetotalcontinuousloadcurrentontheprotectivedeviceshouldnotexceed80percentofitsampereratingunlessthedeviceisratedtocarry100percentofitsampererating,inanenclosure.

5. Unlessacurrentlimitingmeansisusedinaseriescombination,themaximumshort-circuitcurrentratingoftheentiremotorcontrolcenteristhesmallestofthefollowing:a. theratingofthebusstructure,orb. thelowestratingofthemotorcontrolunits,orc. thelowestratingofthefeederunits.

Thismotorcontrolcenterratingisclearlyindicatedontheleadsheetlocatedintheinformationpacket.

Hazardous voltage.Failure to check this equipment prior to energization can cause death or serious personal injury.Allpre-energizedchecksoutlinedinthisinstructionmanualmustbeperformedbeforetheequipmentisenergizedbyQualifiedPersonnelonly.

WARNING

Operation



Addition and replacement of control units (page 25-27)wDe-energizemotorcontrolcenterincominglineconnections

Adding to a blank unit space (page 26)wOpenblankdoor.wRemovehingepinswithdooropen.wClosedoorhalfwayandremovedoor.w Ifnecessary,installunitsupportassemblyandblankcoversordoors.wInsertshelfbracketsataslightangleintoverticalbussupportangleandsnapintoplace.wSecurebracketsbyfasteningtheright-handbrackettobus

supportangleandtheseparatorangletotheleftsideof structurewiththetwoscrewsprovided.wMountunitdoor.(Oppositeprocedureofremovingblankdoor.)wRemove(ifrequired)unitstabholecovers.wVerifythatstabislubricatedwithapprovedlubricant.wSlidecontrolunitintoplacewithdisconnecthandle“OFF”.wCompleteengagementbyclosingrackinglever.Engagelockinglatchtoseparatorangleandscrewdown.wConnectoutgoingpowerandcontrolwiring.wClosedoorandperformpre-operationchecks(seepage29).

Replacing with unit of the same size (page 25) wIfpossible,deenergizemotorcontrolcenter. wMovedisconnectoperatinghandleto"OFF".wOpendoor,loosenanddisengagelockinglatch. wOpenverticalwirewaydoor.wMoveunitto.test.position.wDisconnectcontrolandloadwiringwRemoveunitbytiltingandslidingout.wReverseprocedureforreplacementunit.wPerformpre-operationchecks(seepage29).

Rearranging control units of different sizes (page 25)wRemoveallnecessaryunits,doorsandunitsupportassemblies.wRealignsupportassemblieswhereappropriate.wRemovestabholecoverswhereappropriate(andcoverthestabholecoversthatwillnotbeused).wMountunitdoors.w Installrearrangedunits.

Insulation test (Megger) (page 28)Thischecklistdoesnotrepresentanexhaustivesurveyofmaintenancestepsnecessarytoensuresafeoperationoftheequipment.Particularapplicationsmayrequirefurtherprocedures.Shouldfurtherinformationbedesiredorshouldparticularproblemsarisewhicharenotcoveredsufficientlyforthepurchaser’spurposes,themattershouldbereferredtothelocalSiemenssalesoffice.

Dangerousvoltagesarepresentintheequipmentwhichcancausedeath,seriousinjury,orpropertydamage.Alwaysde-energizeandgroundtheequipmentbeforemaintenance.Maintenanceshouldbeperformedonlybyqualifiedpersonnel.Theuseofunauthorizedpartsintherepairoftheequipment,tamperingbyunqualifiedpersonnel,willresultindangerousconditionswhichcancausedeath,seriousinjury,orequipmentdamage.Followallsafetyinstructionscontainedherein.

5 Maintenance

5.1 Maintenance quick check listFailuretoproperlymaintaintheequipmentcanresultindeath,seriousinjury,orproductfailure.Theinstructionscontainedhereinshouldbecarefullyreviewed,understood,andfollowed.Thefollowingmaintenanceproceduresmustbeperformedregularly.

SchedulingwSchedulemaintenanceappropriatetotheseverityofservice.wConsiderenvironment(dampness,heat,anddust),severity

ofoperations,andtheimportanceofthemachinerybeing controlled.wControlunitmaintenanceshouldcoincidewithinspection

ofthemotorbeingcontrolled.wBusworkinspectionentailsshuttingdowntheentire

controlcenter.

Cleaning (page 33)wUseavacuumcleaner,notcompressedair.wExcessdepositsofforeignmaterialssignifyfaultygasketing.wPayparticularattentiontoconductivedeposits.

Loose connections (page 33)wPeriodiccheckingoftightnessofconnectionspromotesreliability andreducesheating.wOverheatinganddiscolorationssignifylooseconnections.wTorquehorizontalbusboltsto20ft.-lbs.wTorqueincominglineconnectionstomainlugsonlyto85ft.-lbs.wTorqueallincomingconnectionstomaincircuitbreakersand

fusibledisconnectsasperthebreakerordisconnectmanufacturer’srecommendations.Thetorquerequirementswillbefoundonalabellocatedonthedisconnectingdevice.

Test position plug-in units (page 25)wUnscrewthelockinglatchinthelowerfrontleft-handcornerand disengagelatchfromseparatorangle.wReleasetherackingleverinthetopbarrierplate.wSlideunitouttothepositivestopontheshelfbrackets.wAsmanyastwopadlocksmaybeusedtolockunitin“test”

positiontopreventaccidentalstabengagement.

ContactswMakesurethatallcontactsarefreefromextraneousmaterials, excesspittingorburning.wCheckforspringpressure.wLubricatestabconnectionswithapprovedlubricant.

Locking in engaged position (page 34)wTolockin"ON",drillouttheindentationsonthedisconnectoperatinghandleandinsertapadlock.wTolockin"OFF",asmanyasthreepadlocksmaybeinsertedin

thedisconnectoperatinghandle.

Field additions of sections (page 14)wForfieldadditionsofsections,followthesameprocedureas

forthefieldassemblyofshippingsplits.

Maintenance



Itisrecommendedthatasafetygroundbeconnectedtothepowerbusafterthesystemhasbeende-energized,andpriortoworkingontheequipment.FollowtheprocedureoutlinedinthePre-energization Checksectionofthismanualbeforepowerisrestored.

Forthesafetyofmaintenancepersonnelaswellasotherswhomightbeexposedtohazardsassociatedwithmaintenanceactivities,thesafetyrelatedworkpracticesofNFPA70Eshouldalwaysbefollowedwhenworkingonelectricalequipment.Maintenancepersonnelshouldbetrainedinthesafetypractices,procedures,andrequirementsthatpertaintotheirrespectivejobassignments.Thismanualshouldbereviewedandretainedinalocationreadilyaccessibleforreferenceduringmaintenanceofthisequipment.

Thecustomermustestablishaperiodicmaintenanceprogramtoensuretrouble-freeandsafeoperation.Thefrequencyofinspection,periodiccleaning,andpreventivemaintenanceschedulewilldependupontheoperationconditions.NFPAPublication70B,ElectricalEquipmentMaintenance.maybeusedasaguidetoestablishsuchaprogram.Apreventivemaintenanceprogramisnotintendedtocoverreconditioningormajorrepair,butshouldbedesignedtoreveal,ifpossible,theneedforsuchactionsintimetopreventmalfunctionsduringoperation.

Thefollowingitemsshouldbeincludedinanymaintenancechecklist.Formoredetailsreadthesucceedingpages.

• GeneralinspectionoftheMCC• Periodiccleaning• Tighteningtorques• Stabfingersandverticalbus• Circuitbreaker/disconnectoperator• Mechanicalinterlocks

Aspecificchecklistofroutinepreventivemaintenancerequirementsisrecommendedforeachitemofequipment,aswellasalogbooktorecordthemaintenancehistory.

5.2 General Inspection of the MCC

1. Carefullyinspectthedoors,enclosuresides,anddeadfrontsurfacesoverallunitsforexcessiveheat.Asageneralrule,atemperaturewhichthepalmofthehandcannotstandforabout3secondsmayindicatetrouble.Infra-redheatdetectorsareavailableforthepurposeofdetectingheatproblems.

2. Inspectthemotorcontrolcenteraminimumofonceeachyear,ormoreoftenasdeemednecessary.LookforanymoistureorsignsofpreviouswetnessordrippinginsidetheMCC.Lookforanyaccumulationofdustordirt.CleanasexplainedinthePeriodicCleaningsection.

3. Looseelectricalconnectionscancauseoverheatingthatcanleadtoequipmentmalfunctionorfailure.Loosebondingorgroundingcancompromisesafetyand/orfunction.Terminalscrews,lugs,busconnections,bondingandgroundingconnectionsshouldbeinspectedfortightnessandretightenedsecurelyasrequired.RecommendedtighteningtorquesareshownintheRecommendedTighteningTorquesectionofthismanual.Fuseclipsshouldbecheckedforsignsofoverheating,looseness,orinadequatespringpressure,andreplacedifnecessary.Allterminals,connections,andconductorsshouldbeexaminedforevidenceofoverheating,corrosion,orpitting.Anypartsfoundtobedamagedshouldbereplaced,usingpartssuppliedorrecommendedbySiemens.Evidenceofoverheatingmayincludediscoloredconductors,terminals,orparts;ormelted,charred,orburnedinsulation.

4. Examineinsulationonconductorsforoverheatingorchafingagainstmetaledgesthatcouldprogressintoaninsulationfailure.Anydamagedconductorsshouldbereplaced.Replacementconductorsshouldbererouted,braced,orshieldedifneededtoavoidsimilardamageinfutureoperation.Temporarywiringshouldberemovedorreplacedbypermanentwiring.

Maintenance

Hazardous voltage.Will cause death or serious personal injury.1)Disconnectandlockoutincomingpowerandcontrolvoltagesourcesbeforebeginningworkonthisoranyotherelectricalequipment.2)Checkallpowerandcontrolcircuitterminalswithavoltmetertomakecertainthattheequipmentistotallydeenergized.3)EnsurethatonlyQualifiedPersonnelbeinstructedandauthorizedtousethedefeatermechanismtogainaccesstoandeenergizedcompartment.4)Neverattempttowithdrawunitordisconnectanyterminationswhenthedefeatermechanismhasbeenusedtoopenthecompartmentdoor.

DANGER



Hazardous voltage.Will cause death or serious personal injury.Disconnectpowerbeforeworkingonthisequipment.

DANGER

Maintenance

5. Operateeachswitchorcircuitbreakerseveraltimestoinsurethatallmechanismsarefreeandinproperworkingorder.Checktheoperationofthemechanicalsafetyinterlocksprovidedwiththeoperator(seesectiononCircuitBreaker/DisconnectOperator).Neverattempttooperateaswitchorcircuitbreakerbyuseofexcessiveforce.

6. Visuallyinspectinstrumentsandpilotlights.Replacedefectivepilotlights.Checkinstrumentcalibrations.

7. Checkalldevicesformissingorbrokenparts,properspringtension,freemovement,rustingorcorrosion,dirt,andexcessivewear.Performperiodicmaintenanceoncomponentsasdetailedinthecomponentinstructionbooks.

8. Recommendedtogoalongwiththemaintenanceprogramforamotorcontrolcenterisanadequatestockofrenewalparts.Thisisimportantwhereservicebecomesacriticalfactorordowntimeisextremelyexpensive.Theitemskeptinstockwilldependonthetypeofmotorcontrolcenteranditsapplication.Typicalitemskeptinstockshouldincludecontactkits,magnetcoils,andfuses.Whenorderingrenewalparts,thefollowinginformationmustbeprovided.1. Completepartnumbersofitemsrequired.2. Quantityofpartsrequired.3. Descriptionofparts.4. Motorcontrolcentercatalognumber.Thecatalognumber

isfoundonthecontrolcenternameplatelocatedonfrontofthecenter.

5. Unitidentificationnumber.Thenumberislocatedonalabelonthesideofthecontrolunitforwhichtheorderedpartsareneeded.

SeetheSiemenscontrolcatalogandthefollowingreplacementpartpublicationsforstarters.0-13/4 14-GCF 4 14-GJB2-21/2 14-GFF 41/2-514-GKF3-31/2 14-GHF 6 14-GMF

5.3 Periodic cleaningAccumulationofdustandforeignmaterialsuchascoaldust,cementdust,orlampblackmustberemovedfromallcontrolequipmentandallsurfacesmustbewipedcleanatregularintervals.Dirty,wet,orcontaminatedpartsshouldbereplacedunlesstheycanbecleanedeffectively.Dustcancollectmoisture,causingvoltagebreakdownanditcanreducetheeffectivenessofheatsinks.

Controlequipmentpartsshouldbecleanedbyvacuumingorwipingwithadryclothorsoftbrush.Usecaretoavoiddamaging

delicateparts.Liquidcleaners,includingspraycleaners,arenotrecommendedduetothepossibilityofresidues.Compressedairisnotrecommendedforcleaningbecauseitwillonlydistributecontaminantsonothersurfaces,andmaydamagedelicateparts.Theinsidebottomofthemotorcontrolcentershouldalsobecleaned,includingremovalofanyhardwareordebris,sothatanyneworunusualwearorlossofpartsoccurringaftertheinspectionmaybemorereadilydetectedduringsubsequentmaintenance.Inspectthemotorcontrolcenterforanysignsofpreviouswetnessordrippinginsidethecontroller.

Condensationinconduitsordrippingfromanoutsidesourceisacommoncauseoffailure.Sealoffanyconduitsthathavedrippedcondensate,andprovideanalternativemeansfortheconduittodrain.Sealoffanycracksoropeningswhichhaveallowedmoisturetoentertheenclosure.Eliminatethesourceofanydrippingontheenclosureandanyothersourceofmoisture.Replaceandthoroughlydryandcleananyaccumulationofdepositedmaterialfrompreviouswettings.

5.4 Stab Fingers and vertical bus

Lookforwearofthetinplatingwheretheunitstabfingersengagetheverticalbus.Theplatingispartoftheenvironmentalprotectionsystem.Oxideand/orotherfilmscanformonexposedbusresultinginapoorcontact.

Lubricatestabconnectionpointswithanapprovedlubricant.Thesepartsmustbereplacedwhentheplatingisworntothepointwherecoppercanbeseenbecausecontactresistancebecomeshigher,increasingtheheatgeneratedatthecontactpoint.

5.5 Recommended tightening torquesWhenmakingboltedassemblies,thefollowingconsiderationsshouldbegenerallyfollowed.Thetighteningtorquesaredeterminedbythesizeofhardwareused.

1. Metal-to-metal–Applystandardtighteningtorqueaslisted:Recommended tightening torques

Thread size Torque (lb.-in.)8-32 2010-32 27-321/4-20 755/16-18 1003/8-16 2471/2-13 613

2. Metal-to-Insert Molded in Compound Part–Apply2/3ofstandardtighteningtorque.

3. Compound-to-Compound–Apply1/2ofstandardtightenintorque.

4. ControlTerminals–11lb.-in.5. Tightenboxtypeincomingcablelugsetscrewsto85ft.lbs.-in.6. Tightenboltedbusconnectionsto20ft.-lbs.7. 400Aand600Afixedmountedunitclampassemblybolts

shouldbetightenedto35ft.-lbs.



5.6 Disconnect operating handle adjustment

Inrarecircumstances,suchaswhenchangingacircuitbreakerorafusibleswitchorwhenaunitistakenapart,itmaybenecessarytoadjustthedisconnectoperatinghandle.(TheSiemensfusibledisconnectswitchfor30A,60A,100A,and200Aratingsdoesnotrequireadjustment.)

1. Performalldisconnectoperatinghandleadjustmentswiththeunitremovedfromthemotorcontrolcenterorinthe“test”position.

2. Theadjustablelinkrodcanadjusttoincreaseordecreaseitsoveralllengthbyrotatingthesleeve.Byrotatingthesleeveclockwisethelengthisincreasedandbyrotatingitcounterclockwisethelengthisdecreased.Ahexnutisprovidedas

partoftheadjustablelinkrodandistightenedagainstthesleevetopreventitfromgoingoutofadjustment.Thehexnutmustbelooseandsufficientlyawayfromthesleevetoallowittorotateduringtheadjustmentofthehandle.


DANGER

Figure60

On

Trip

Off

Park

Figure61

Maintenance

Adjustable Link Rod

Sleeve

Hex Nut

Escutcheon

Slot “B”

125A FrameCircuit Breaker

PivotMechanism

Escutcheon

30/60A Disconnect Switch

Slot “A”

A



3. Thehandleassemblymustbeadjustedtoperformthefollowingfunctions:

Disconnect switch Unitmustturn"ON" Unitmustturn"OFF"

Circuit breaker Unitmustturn"ON"Unitmustturn"OFF"Unitmustindicate"TRIP" Unitmust"RESET"

4. Operatethehandlefromthe"ON"positiontothe"OFF"position andcircuitbreakerordisconnectswitchwillturn"OFF".

5. Returnthehandletothe"ON"positionandthecircuitbreakeror disconnectswitchwillturn"ON".Ifitdoesnot,rotatethesleeve slightlyclockwiseandtryagain.Repeatthisstepuntilthehandle assemblyturnstheunit"ON".Then,repeatstep4.

6.1Oncesteps4and5havebeensatisfactorilycompleted,the adjustmentforthedisconnectswitchwillhavebeencompleted.Tightenthehexnutagainstthesleevetolockintheadjustment.Thefollowingstepswillnowonlypertaintocircuitbreakers.

7. Tripthecircuitbreakerandthehandleshouldmovetoaposition midwaybetweenthe"ON"and"RESET"positions.Circuitbreakers fromdifferentmanufacturersrequiredifferentmethodstotrip them.Onecanbetrippedbyrotatingaredbutton,anotherby passingahighcurrentatlowvoltagethroughoneofthepoles.(Thedefeatermechanismshouldengage.)

8.1Nowmovethehandledownpastthe"OFF"positiontoresetthecircuitbreaker.Ifthecircuitbreakerresetsandcanbereturned tothe"ON"positionbythehandle,theadjustmenthasbeen completedandthehexnutshouldbetightenedagainstthe sleeve.Ifthecircuitbreakerdoesnotreset,turnthesleeve counterclockwiseslightlyandtryagain.Repeatthisstepuntil thebreakerresets.Thenrepeatsteps4-8toverifythatthe previousadjustmentshavenotbeenadverselyeffected.

9. Inthecaseofboththecircuitbreakeranddisconnectswitch,theadjustmentshouldbesuchtheyturnonwiththeknobnocloserthe1/8”awayfromtheescutcheon.

1Alwaysusetwowrencheswhenloosening,adjusting,ortighteningtheadjustablelinkrod.Onewrenchadjuststhehexsleevewhilethesecondwrenchholdsthehexnut.

AprovisionismadeforQualifiedPersonstodefeatthedooroperatorinterlockwhenthehandleisinthe“ON”position.Thisisaccomplishedbyturningthedefeaterscrewcounterclockwiseapproximately1/8turnuntilthedoorisreleased.Itisnotnecessarytooperatethedefeaterscrewtoclosetheunitdoor.Releasethedefeaterscrewandsecurethe1/4turndoorfasteners.

Thissafetyinterlockalsoservestopreventinadvertentclosingofthedisconnectwhenthedoorisopen.Authorizedpersonnelmaydefeattheinterlockinthissituationbypushingdowntheexposedinterlockarmlever.Thisreleasestheinterlocksothattheprotectivedevicemaybeturned“ON”.

5.7 Adjustment notes

Nofieldadjustmenttothedoorinterlockmechanismshouldbenecessaryundernormaloperatingconditions.However,should

adjustmentbecomenecessaryasaresultofmechanicaldamageorwear,thefollowingprocedureisrecommended.

Withdisconnectingdeviceinthe“OFF”position,andtheunitdooropen,defeattheinterlockbypushingthetopofthelevertotheleftandturnbreaker“ON”and“OFF”severaltimes.Ifthedisconnectingdevicefailstoturn“ON”orifoperatingresistanceisexperienced,turnprotector“OFF”.Withdrawtheunitandinspectformisalignmentoftheoperatorextension(s)orthedriver.Makenecessaryadjustmentstocorrectanymisalignment.

5.8 Maintenance after a fault has occurred

Theexcessivecurrentsoccurringduringafaultmayresultincomponentorbusdamageduetomechanicaldistortion,thermaldamage,metaldeposits,orsmoke.Afterafault,repairthecauseofthefault,inspectallequipmentperNEMAStandardsPublicationNo.ICS2-1987,PartICS2-302andmakeanynecessaryrepairsorreplacementspriortoplacingtheequipmentintoserviceagain.Thefollowingprocedureisrecommendedforthisinspection.

Bus –Retightenallbusconnections.Replaceburntormeltedbusorbuswithmelted,worn,ordamagedplating.Replaceallinsulatorsshowingdeterioration,deposits,orcracks.

Enclosure–Inspecttheenclosureanddoorsforevidenceofdamagesuchasdeformation,displacementofparts,orburning.Extensivedamagewillrequirereplacementoftheentirecontroller.

5.9 Disconnect Means

1. CircuitBreakers:Examinethecircuitbreakerforevidenceofpossibledamage.Ifthereisnotapparentevidenceofdamage,thebreakermayberesetandturned“ON.”Ifitissuspectedthatthecircuitbreakerhasopenedseveralshortcircuitsoriftherearesignsofpossibledeterioration,replacethebreakerorsubjectittothedescribedinPara.AB1-2.38oftheNEMAStandardsPublicationfor“MoldedCaseCircuitBreakers”beforerestoringittoservice.


DANGER

Maintenance


DANGER



2. DisconnectSwitch:Theexternaloperatinghandlemustbecapableofopeningtheswitchafterafault.Replacetheswitchiftheexternaloperatinghandlefailstoopenitorifvisualinspectionafteropeningindicatesdeteriorationbeyondnormalwear,suchasoverheating,contactbladeorjawpitting,charring,orinsulationbreakage.

3. FuseHolders:Replacefuseholdersiftheinsulatingmounts,barriers,orfuseclipsshowsignsofdeterioration,heating,distortion,orlooseness.

4. OperatingHandle:Thedisconnectingmeansmustbereplacediftheoperatinghandlefailstoopenandclosethedisconnectdevice.Thedoorinterlockmustbeinspectedanditsproperfunctionverifiedpriortorestoringthecontrollertoservice.

5. StabFingers:(Figure62)Inspectstabfingersasinstructed underStabFingersSectionandVerticalBusSectionandreplace ifnecessary.Lubricatestabfingerswithapprovedlubricant.

5.10 Terminals and internal conductors

Replacealldamagedpartswhichshowevidenceofdiscoloration,melting,orarcingdamage.

5.10.1 Motor starter1. Contactor–Replacethecontactsandcontactspringsifthe

contactsareweldedorshowheatdamage,displacementofmetal,evidenceofbindingintheguides,orwearinexcessofwearallowance.Ifdeteriorationextendsbeyondthecontacts,replacethecontactor.Examplesofsuchdeteriorationincludeevidenceofarcingonthecontactormoldingsandinsulationdamage.Arcchutesmustbeinplaceandsecuredpriortooperatingcontactor.

2. OverloadRelays–a)Anyindicationofanarcstrikingorburningtheoverloadrelaymayrequirereplacement.b)Contactoperationmustbeverifiedbyelectricallyormechanicallytrippingandresettingtherelayevenifthereisnovisualindicationofdamagethatwouldrequirereplacement.

3. Fuses–Alwaysreplaceallthreefuseseventhoughonlyoneortwoareopencircuitedsinceinternaldamagesufferedbyfusesnotreplacedcouldresultinnuisanceshutdownlater.

4. PerformthePre-energizationchecksproceduresdetailedonPage29herein,beforerestoringtheequipmenttoservice.

5.11 Adjustment of Sentron Type ETIInstantaneous Trip Motor Circuit Interrupter (1A-125A)

ETIinstantaneoustripmotorcircuitinterruptersaresuppliedasstandardwithSize1throughSize6motorstarters.Themotorcircuitinterruptercontinuouscurrentratingshouldnotbelessthan115%ofmotorfullloadcurrent(MFLC).TheMFLCisobtainedfromthemotornameplateorfromTable430-150oftheNEC(1999).Usethefollowingproceduretoadjusttheinstantaneoustripsetting.

1. Movetheoperatinghandletothe“OFF”positionandopentheunitdoor.

2. TheinstantaneoustripcircuitbreakerisfactorysetattheLOWposition.

Toset:determinemotorfullloadcurrentfromthemotornameplate.Refertothetableanddeterminetherecommendedsettingposition.Useascrewdrivertosettheindicatorontheadjustmentscrewtotheappropriateposition.

Formaximumprotectionthetrippositionshouldbesetaslowaspossible.Turntheadjustmentscrewcounterclockwisetosuccessivelylowerpositionsuntilthebreakertripsonmotorstarting.

Afterthispositionisdetermined,turntheadjustmentscrewclockwisetothenexthighersettingfornormaloperation.Theadjustmentscrewisinfinitelyadjustableforcustomerconvenience.Ifthebreakerdoesnottripatthelowestsettingleavetheindicatoratthissetting.

3. Adjustthetripsettingbyrotatingtheadjustmentdialtothepositionselectedinstep2above.

Hazardous voltage.Will cause death or serious personal injury.Disconnectandlock-outallpowerandcontrolvoltagesourcessupplyingthemotorcircuitinterrupterbeforeadjustingtripsettingorperforminganyothermaintenanceoperations.

DANGER

Maintenance

Figure62.Thestabassembly.



Ensurethatthesettingonamagneticonlymotorcircuitprotectordoesnotexceedthemaximumallowablesettingasdefinedinthe1999NationalElectricalCode,section430-S2(C)(3).

5.12 Field testing of the circuit breakers

Atestcanbeperformedusingtheprocedureoutlinedinthefollowingdiscussiontoverifythatacircuitbreakertripmechanismisfunctioning.

1. Wirethethreecircuitbreakerpolesinseries.2. Connecttheseriescombinationofbreakerpolestoavariablelow

voltagehighcurrentpowersource.3. Graduallyincreasethecurrentfrom“0”untilthecircuitbreaker

trips.Ifthecircuitbreakerfailstotripwhenthetestcurrentreaches150%ofthelargesttripsetting,thetripunitisnotfunctioningproperlyandthecircuitbreakerrequiresreplacement.

5.13 Overload relay

Forproperoverloadrelaycoordination,thecablesontheloadsideoftheoverloadrelayshouldbesizedinaccordancewiththetablesinArticle310oftheNationalElectricalCode.Thewireformotorswithfullloadcurrentsof100amperesorlessmaybeselectedfromthe60°Cor75°Ccolumn.Selectwirefromthe75°Ccolumnwhenthemotorcurrentisgreaterthan100amperes.Whenconditionsdictatetheuseofcableslargerthanthese,therelaytrippingtimemaybeaffected.Anotherconditionwhichmayaffecttrippingisalongaccelerationtimesuchasthatcausedbyamotordrivingahighinertiaload.Ifeitheroftheseconditionsexists,consultSiemensforoverloadrelayapplicationinstructions.

I-T-E Type ETI setting positions

Cont. Amps

Trip settings positions

LOW 2 3 4 5 6 7 HI

1 2.6 4.5 6 7.5 — — — 9

2 7 11 15 19 — — — 22

3 10 17 23 30 — — — 35

5 16 26 36 46 — — — 54

10 30 50 70 85 — — — 100

25 55 90 125 155 — — — 180

30 80 135 185 235 — — — 270

40 115 185 255 325 — — — 375

50 180 300 410 520 — — — 600

100 315 540 740 890 — — — 1000

FXD62AJXD62HLXD62HMXD62A ContactSiemensSalesOfficeforsettingswithcurrentlimiters.

HEM Setting Positions

CatalogNumber

ContactAmps

NEMAStarter size

Trip settings positions

A B C D E F

HEM3M003L 3 0 9 15 21 27 30 33

HEM3M007L 7 0 21 35 49 63 70 77

HEM3M015L 15 0 45 75 100 135 150 165

HEM3M030L 30 1 90 150 210 270 300 330

HEM3M050L 50 2 150 250 350 450 500 550

HEM3M070L 70 2 210 350 490 630 700 770

HEM3M100L 100 3 300 500 700 900 1000 1100

Maintenance



Problem Probable cause Corrective action

Doorswillnotcloseoroutofalignment.

Enclosureisnotbolteddowntightly.

Enclosuresprungoutofshape.Doorhingesnotproperlyadjusted.

Usinglevel,addshimsasnecessaryandtightenanchoringbolts.

Straightenorrepairenclosure.Removedoorhinges.Addorsubtractshimsasnecessary.

Contactorwillnotclose. Controlcircuitorpowerfuseblownorcircuitbreakertripped.

Inspectfuses,replaceifblown.Resetcircuitbreaker.

Incomingpowerlinenotenergized. Closefeedercircuitbreakersortieswitch.

Magnetcoildefective. Checkmagnetoperation,replacecoilasnecessary.

Interposingrelaydefective.1

Controlpowertransformerdefective.Overloadrelaytrippedordefective.Missingjumper,looseconnections,remoteconnections,etc.

Checkandreplaceifdefective.Checkandreplaceifnecessary.Checkandreplaceifnecessary.Checkwiringdiagramcarefullytomakesurethatallexternaloralternateconnectionshavebeenmadesatisfactorily.Thisisespeciallytruewhereremoteprotectiveorcontroldevicesareused.

Contactorchatterorhum. Looseconnectionincontrolcircuit.Defectiveinterposingrelay.1

Defectivecoil.Lowcontrolvoltage.Corrodedordirtymagnetpolefaces.

Tightenconnectionsincontrolcircuit.Checkrelay,replaceifnecessary.Checkmaincoil,replaceifnecessary.Checklinevoltage.Cleanorreplacemagnetassembly.

Contactsoverheating. Looseconnections.Contactsnotmatingfirmly.

Contacttiperoded.

Tightenconnections.Checkforweakordeformedcontactspring,replaceifnecessary.Replacecontacts.

1Notsuppliedonallstarters.

6. Troubleshooting

Intheunlikelyeventthatoperatingproblemsareencountered,usethefollowingtroubleshootingcharttoisolatethecauseoftheproblemandfindtheremedy.Ifthecorrectiveactiongiveninthechartfailstocorrectthedifficulty,consultyourfieldsalesrepresentative.

ThefollowinginformationisrequiredifitisnecessarytowriteSiemensControlsrelativetotheequipmentproblem.

1. Manufacturer’sordernumberandpartnumber,ifavailable.2. Nameplatedataoncontactororcontroller.3. Dutycycleandanydetailsofoperation.4. Lengthoftimeinserviceandapproximatetotalnumber

ofoperations.5. Voltage,current,andfrequency.6. Descriptionofanyproblem.7. Anyotherpertinentinformation,suchasdrawing,layout,

andschematicnumber.


DANGER

Troubleshooting



Problem Probable cause Corrective action

Overloadrelaystripduringstartingorsoonaftermotorisuptospeed.

Motoroverloaded. Limitstartingloadandrunningloadtomotorcapabilities.

Motorbeingstartedtoofrequentlyatcloseintervals.

Joggingandstartingoperationsmustbelimitedtocapabilitiesofthemotorandcontrol.Checkstartinglimitationsinmotorinstructionmanualbeforerepeatedstarts.

Excessivemotoraccelerationtime. Thestartingofhighinertialoadsmaynotpermittheuseofstandardoverloadrelayapplication.Whereacceleratingtimeapproaches12secondsormore,specialoverloadrelaybypassdevicesandcircuitswouldusuallyberequired.ContactSiemensregardingsuchproblemsandsupplycompletedataonlocked-rotorstartingcurrentandtotalacceleratingtimeundermaximumloadconditions.

Lowlinevoltage. Linevoltageshouldbemaintainedbetween-+10%ofmotornameplatevoltage.

Overloadrelaytripsduringmotoroperation. Motorbeingoverloaded. Reduceloadorcorrectconditionscausingoverload.

Overloadrelaynotadjustedtomotorcapabilitiesorsizedproperly.

Adjustrelaysettinginaccordancewithinstructionsfortheoverloadrelay.

Adjustmentshouldcorrespondtothermalratingandservicefactor.Replaceoverloadifnotsizedproperly.

Overloadrelayfailstotriponoverloadcurrent. Relaytrippingmechanismjammed. Replacerelay.

Incorrectrelayorrelaysetincorrectly. Checkrelayselectionandadjustmentperoverloadrelayinstructions.

Currenttransformerswithimproperratioorwithshort-circuitedsecondaryterminals.

Currenttransformersmusthavestep-downratiotocorrespondtofullloadmotorcurrentandrelayselection.Protectivejumpersmaybeprovidedatcurrenttransformersecondaryterminalsoronterminalblockconnectionstoguardagainstopentransformersecondarycircuit,andjumpersmustberemovedbeforeplacingequipmentinoperation.


DANGER

Troubleshooting



Problem Probable causes Corrective action

Blowingofmotorpowerfuses. Shortcircuitontheloadsideofthemotorfuses. Usemeggerandothertestinstrumentstolocatefaultandcorrect.

Joggingortoofrequentstarting. Onfrequentstarting,fusesaccumulateabnormalrelays.Sincefusesmorecloselyfollowcoolingandheatingofmotorwindings,successivestartingoperationsmustbelimitedtothesafecapacityofthemotortopreventfuseblowingfromthiscause.Checksizeratingonfuseagainstmotorfullloadcurrentsandservicefactor.

Fusesinternallydamagedbecauseofimproperhandling.

Motorpowerfusesmaybedamaged,dropped,orroughlyhandled.Replacewithfuseofsametype,rating,andvoltage.

Blowingofprimarycontroltransformerfuses. Shortedprimarywiringincontroltransformer. Replaceorrepairtransformer.

Fusemaybe“open”duetoroughhandlingbeforeinstalling.

Replacewithfuseofsametype,rating,andvoltage.

Secondaryfusesnotproperlycoordinated. Meltingcharacteristicsofsecondaryfuseshouldnotintersectmeltingcharacteristicofprimaryfuse.RatingofstandardNECfuseshouldnotexceedtwicethesecondarycurrentrating.

Blowingofsecondarycontrol. Abnormalcurrentorshortcircuitin Checkforshortedmagnetcoils,shortedrectifiers,ifsupplied,grounds,looseorbentconnections,mechanicalbindinginrelayandcontactormechanisms,excessiveoperations,andincorrectsecondaryterminalconnections.


DANGER

Troubleshooting



Full loadmo. amps Min. Max.

Heatercode no.

Max rat.of prot.device1

Size 0 & 10.67 0.72 E14 30.73 0.80 E16 30.81 0.85 E17 30.86 0.92 E18 30.93 0.99 E19 31.00 1.08 E23 31.09 1.23 E24 31.24 1.37 E26 31.38 1.54 E27 31.55 1.69 E28 31.70 1.80 E29 31.81 1.94 E31 31.95 2.07 E32 32.08 2.26 E33 32.27 2.54 E34 72.55 2.69 E36 72.70 2.88 E37 72.89 3.14 E38 73.15 3.40 E39 73.41 3.81 E41 73.82 4.26 E42 74.27 4.62 E44 74.63 5.09 E46 75.10 5.61 E47 75.62 5.91 E48 75.92 6.15 E49 156.16 6.70 E50 156.71 7.54 E51 157.55 8.29 E52 158.30 8.99 E53 159.00 9.85 E54 159.86 10.4 E55 1510.5 12.0 E56 1512.1 13.6 E57 3013.7 15.8 E60 3015.7 17.0 E61 3017.1 18.4 E62 3018.5 19.4 E65 3019.5 21.3 E66 3021.4 24.4 E67 3024.5 25.9 E69 3026.0 26.0 E70 30

Size1onlyD25385-7


Heatercode no.


Size 1 3/42.27 2.54 E34 72.55 2.69 E36 72.70 2.88 E37 72.89 3.14 E38 73.15 3.40 E39 73.41 3.81 E41 73.82 4.25 E42 74.26 4.62 E44 74.63 5.09 E46 75.10 5.61 E47 75.62 5.91 E48 75.92 6.15 E49 156.16 6.70 E50 156.71 7.54 E51 157.55 8.29 E52 158.30 8.99 E53 159.00 9.85 E54 159.86 10.4 E55 1510.5 12.0 E56 1512.1 13.6 E57 3013.7 15.6 E60 3015.7 17.0 E61 3017.1 19.4 E62 3019.5 20.9 E65 3021.0 22.2 E66 3022.3 25.3 E67 3025.4 26.9 E69 5027.0 30.2 E70 5030.3 33.3 E72 50

D25556-3Size 2 & 2 1/210.5 12.0 E56 5012.1 13.6 E57 5013.7 15.6 E60 5015.7 17.1 E61 5017.2 19.4 E62 5019.5 20.9 E65 5021.0 22.2 E66 5022.3 25.3 E67 5025.4 26.9 E69 5027.0 30.2 E70 5030.3 33.3 E72 5033.4 35.3 E73 5035.4 41.5 E74 5041.6 45.0 E76 100

Size21/2onlyD26069-5

Full loadMo. amps Min. Max.

Heatercode no.


Size 4 1/2 & 588.0 98.0 E27 25098.1 108 E28 250109 114 E29 250115 122 E31 250123 130 E32 250131 140 E33 250141 155 E34 250156 166 E36 250167 177 E37 250178 193 E38 400194 209 E39 400210 233 E41 400234 248 E42 400

Size5onlyD25651-5

Size 456.9 60.9 E89 15061.0 63.9 E91 15064.0 67.7 E92 15067.8 72.4 E93 15072.5 77.7 E94 15077.8 85.9 E96 15086.0 91.9 E97 15092.0 96.7 E98 15096.8 105 E99 150106 115 E103 150116 130 E104 150

D36024-2


Heatercode no.


Size 3 & 3 1/230.0 33.5 E69 10033.6 36.4 E70 10036.5 39.6 E71 10039.7 43.6 E73 10043.7 46.5 E73A 10046.6 51.6 E74 10051.7 54.4 E76 10054.5 58.0 E77 10058.1 63.0 E78 10063.1 67.7 E79 10067.8 72.4 E80 10072.5 80.0 E94 10080.1 88.1 E96 10088.2 91.5 E97 15091.6 96.8 E98 15096.9 99.0 E99 15099.1 108 E101 150

Size31/2onlyD26801-3

Size 6166 195 E27 400196 217 E28 400218 229 E29 400230 245 E31 400246 261 E32 400262 281 E33 400282 311 E34 400312 331 E36 400332 355 E37 400356 387 E38 600388 419 E39 600420 467 E41 600468 500 E42 600

D25665-3

Heatersshowninthetableprovideamaximumtripratingof125%ofthemotornameplateamperes,whichissuitablefor40°Cmotors.Forallothermotorsselectheatersonecodenumberlowerthanspecifiedinthetable,whichgiveamaxi-mumtripratingofapproximately115%.

Thetrippingcurrentofanyheaterina40°Cambientis25%greaterthanthelowervalueofmotoramperesshowninthetable.Startersdonotprovideprotectionfromshortcircuits.AprotectivedeviceshouldbeprovidedinaccordancewiththeNEC

(CECinCanada)andnotexceedthevaluesshowninthetable.

Note:Iftheratingspecifiedisnotastandardsizeforthecircuitbreakermanufacturer,usethenextlargestsize.

Wye-Delta starters: Ifthemotornameplateshowsthefullloaddeltalinecurrentonly,dividethisvalueby1.73ormultiplyby.58toselecttheproperheaterrating.

1Ratingsspecifiedareforinstantaneoustripcircuitbreakers.

Maximumcurrentratingforthermalmagneticcircuitbreakersis250%ofmaximumheaterFLA.

Maximumcurrentratingoffusesis:a. 150%ofmaximumheaterFLAforClassR,

K,orL(timedelay).b. 250%ofmaximumheaterFLAforClassK

orL(non-timedelay).c. 300%ofmaximumheaterFLAforClassJ(non-timedelay).

Ifthecalculatedratingisbetweenstandardsizes,thenextlargersizemaybeused.Fusesizemaynotexceedswitchsize.

Hazardous voltage.Can cause death or serious personal injury.Automaticresetwillcontinuetoresetontwo-wirecontrol.Whennotdesired,usethree-wirecontrolDonotusemanualtripbuttonwhenrelayissetinautomaticresetposition.

WARNING

Heater tables



K “Standard trip” heater elements for ambient temp. comp. bimetal relaysSize Heater

code00, 0, 1,1 3/4 2, 2 1/2 3, 3 1/2 4 (JB) 4 (JG) 4 1/2, 5 61.52-1.651.66-1.791.80-1.941.95-2.152.16-2.37

1.52-1.651.66-1.791.80-1.941.95-2.152.16-2.37

98-106107-115116-124125-136137-149

196-213214-231232-249250-273274-299

K21K22K23K24K26

2.38-2.562.57-2.872.88-3.133.14-3.373.38-3.72

2.38-2.562.57-2.872.88-3.133.14-3.373.38-3.72

150-160161-171172-192193-206207-228

300-321322-343344-385386-413414-457

K27K28K29K31K32

3.73-4.004.01-4.354.36-4.995.00-5.385.39-5.79

3.73-4.004.01-4.354.36-4.995.00-5.385.39-5.79

229-248 458-514515-563

K33K34K36K37K39

5.80-6.436.44-6.836.84-7.837.84-8.238.24-9.59

5.80-6.436.44-6.836.84-7.837.84-8.238.24-9.59

K41K42K43K49K50

9.60-9.9010.0-10.710.8-11.611.7-12.312.4-13.4

9.60-9.9010.0-10.710.8-11.611.7-12.312.4-13.4

10.0-10.911.0-12.012.1-12.712.8-13.513.6-14.6

K52K53K54K55K56

13.5-14.214.3-15.115.2-17.517.6-18.718.8-20.0

13.5-14.214.3-15.115.2-17.517.6-18.718.8-20.0

14.7-15.916.0-16.917.0-18.218.3-19.519.6-20.9

14.3-15.615.7-17.117.2-18.919.0-20.720.8-22.8

18.9-20.420.5-22.122.2-24.3

K57K58K60K61K62

20.1-21.521.6-23.924.0-25.8

20.1-21.521.6-23.924.0-25.825.9-29.5

21.0-23.123.2-25.425.5-27.9

28.0-30.5

22.9-25.625.7-27.627.7-30.330.4-33.333.4-36.7

24.4-26.726.8-29.329.4-32.332.4-35.535.6-39.0

K63K64K67K68K69

29.6-32.732.8-36.0

30.6-33.533.6-37.237.3-40.740.8-43.043.1-47.9

36.8-40.040.1-42.442.5-46.346.4-49.649.7-52.3

39.1-42.943.0-46.546.6-50.951.0-55.956.0-59.1 49.7-52.3

K70K72K73K74K75

48.0-52.752.8-58.358.4-60.0

52.4-57.557.6-63.964.0-67.968.8-80.774.4-77.9

59.2-68.7

68.0-74.3

80.8-92.7

52.4-57.557.6-63.063.1-68.168.2-74.374.4-79.9

K76K77K78K83K85

78.0-83.183.2-91.491.5-99.9100.0-108

92.8-103.9104.0-113.5

113.6-127.9

80.0-87.487.5-90.090.1-100.1100.1-108.0108.1-119.0

K86K87K88K89K90

128.0-143.9144.0-163.9164.0-180.0

119.1-130.0 K92K94K96

Heatersshowninthetableprovideamaximumtripratingof125%ofthemotornameplateamperes,whichissuitablefor40°Cmotors.Forallothermotorsselectheatersonecodenumberlowerthanspecifiedinthetable,whichgiveamaximumtripratingofapproximately115%.

Thetrippingcurrentofanyheaterina40°Cambientis25%greaterthanthelowervalueofmotoramperesshowninthetable.

Startersdonotprovideprotectionfromshortcircuits.Aprotectivedeviceshould

beprovidedinaccordancewiththeNEC(CECinCanada)andnotexceedthevaluesshowninthetable.

Note:Iftheratingspecifiedisnotastandardsizeforthecircuitbreakermanufacturer,usethenextlargestsize.

Wye-delta starters:Ifthemotornameplateshowsthefullloaddeltalinecurrentonly,dividethisvalueby1.73ormultiplyby.58toselecttheproperheaterrating.

*Ratingsspecifiedareforinstantaneoustripcircuitbreakers.

Maximumcurrentratingforthermalmagneticcircuitbreakersis250%ofmaximumheaterFLA.Maximumcurrentratingoffusesis:a.150%ofmaximumheaterFLAforClassR,K,orL(timedelay).b. 250%ofmaximumheaterFLAforClassKorL(non-timedelay).c. 300%ofmaximumheaterFLAforClassJ(non-timedelay).

Ifthecalculatedratingisbetweenstandardsizes,thenextlargersizemaybeused.Fusesizemaynotexceedswitchsize.

Heater tables

Subject to change without prior notice.

A5E31166545A-002 Part No: CCIM-TIAST-1115All rights reserved. Printed in USA

©2016 Siemens Industry, Inc.

Siemens Industry, Inc.3333 Old Milton ParkwayAlpharetta, GA 30005

1-800 [email protected]

The information provided in this brochure contains merelygeneral descriptions or characteristics of performancewhich in case of actual use do not always apply as describedor which may change as a result of further developmentof the products. An obligation to provide the respectivecharacteristics shall only exist if expressly agreed in theterms of contract.

All product designations may be trademarks or productnames of Siemens AG or supplier companies whose use bythird parties for their own purposes could violate the rightsof the owners.

www.usa.siemens.com/mcc

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