Siemens DOL 3TW7291-1A Guide

DOL Starter
3TW7291-1A
For dependable service, it is of utmost
importance that instructions given below are
followed for selection, inspection, installation,
commissioning, operation and maintenance.
Installation, Operation & Maintenance
Instructions
s
Raja+DOL Starter (Self reset)
Selection of Starter
• ReferTableAforrecommendedselectionof3TW72starters.
 TableA:kW/HPRating,thermaloverloadrelayrange&
fuserating,CoilVoltage,Maximumfullloadcurrentfor
differenttypesofmotors.
• RecommendedSubmersiblepumprating5.5kW/7.5HPMax.
3
4
5
1
6
2
7
3
13
12
6
1
7
2
4
5
8
11
9
10
1. ‘ON’pushbuttons(green)
2. ‘OFF’pushbutton(red)
3. Coverxing(InstrumentHead)screws
4. Housing
5. Cover
6. MechanicalLatch(OFFpushbutton)tobeusedfor
preventingundesiredONoperationofStarter
7. Nameplate
1. Contactor
2.OverloadRelay
3.ContactBlock
4.RelayDial
5.RedKnob
6.ContactorIncomingTerminalScrews
7.ContactorOutgoingTerminalScrews
8.Contactoractuatinggreenbutton
9.WiringdiagramLabel
10.Links
11.Gasket
12.Grommet
13.MountingScrewhole
Fig. 1: DOL Starter
Fig. 2: Starter Inside View
Pleasereadandunderstandtheseinstructionsbefore
installating,operating,ormaintainingtheequipment.Keepfor
futurereference
Danger
Hazardousvoltagecancausedeathorseriousinjury.Disconnect
powerbeforeworkingonequipment.
Warning
Automatic Motor Restart.
Can cause death, serious injury or property damage.
Donotuseautomaticresetmodewhenunexpectedautomatic
restartofthemotorcancauseinjurytopersonsordamageto
equipment.
Reliablefunctioningoftheequipmentisonlyensuredwith
certiedcomponents.Commissioningandmaintenanceby
qualiedpersonnelonly.
NOTICE
ThisproducthasbeendesignedforenvironmentA.Useofthisproduct
inenvironmentBmaycauseunwantedelectromagneticdisturbancesin
whichcasetheusermayrequiretotakeadequatemitigationmeasures.
IS/IEC 60947-4-1

2
Installation:
• RemovetheFrontcover.
• Fixthestarterhousingverticallyonarigidsurfacefree
fromvibrations.
• RemovetherubberGrommetsforincomingandoutgoing
cableConnections.(Fig.2)
• Connectincomingandoutgoingcablesasfollows:
(Fig.2)
 – SelectcorrectsizeofcablefromTable-A.
 – Removeapprox.10mmofinsulation.
 – Passthecablethroughpropercableglandtoavoid
ingressofmaterial.
 – Connectthecablesandtightenthescrewsrmly.
(TerminalScrews:M4,TighteningTorque:80-110
Ncm)
 – Settheoverloadrelayscale(Fig.2)usingproperscrew
driveraspertheproceduregivenbelow.
 – Settherelaytoratedcurrentmentionedonmotor
nameplate.
 – Pressgreenbuttonofthecontactblock(Fig.2)tostart
themotorandwaittillitreachestonormalspeed.
Reducetherelaysettingstillittrips.
 – Settherelayatslightlyhighervalue.
 – Allowaresettimeapprox4min.andrelayresetsonits
own.
 – Restartthemotor.Iftherelaydoesnottrip,consider
therelayasproperlyset.Ifittrips,setitatlittlehigher
valueandrecheck.
 – Presstheredknob(Fig.2)ontheoverloadrelayto
stopthemotor
 – Fixthefrontcover.TorquefortheInstrumentHead
Screwsis80to140N-cm.
Operation:
• ON/OFFOperation
 – RotatetheLatchawayfromOFFpushbutton
 – Switch‘ON’thestarterbypressingthegreenpush
button(marked‘I’)(Fig.1)onthestartercover.
 – Switch‘OFF’thestarterbypressingtheredpush
button(marked‘O’)(Fig.1)onthestartercover.
• ResetOperation
 – Iftheoverloadrelaytrips,itresetsautomatically.
(*Allowaresettimeofapprox.4min.)
Maintenance:
• Switchoffthestarteranddisconnectthemainsupply
byswitchingthemainswitchbeforedoingany
maintenance.
• Keeptheinteriordustfree.
• Re-tightentheterminalscrewsfromtimetotime.
• Nomaintenanceisneededforoverloadrelay.Pleasedo
notopentherelay.
• Replacethecontactors/contactsofthecontactorsifthey
wereseverelypittedorwhenonly40%oftheoriginal
contacttipsremains.
• ReplacementofoverloadRelay
 I. Disconnectthemotorwiresconnectedtotherelay
terminals.
 II. Loosentheoutgoingterminalsscrewsofthecontactor
(Fig.3)
 III.Disengagetherelayterminals&hookfromcontactor
 IV.Taketheoverloadrelayofsamerange
 V. Connect&tightentherelayterminals(L1L2L3)tothe
contactorterminals(T1T2T3)
 VI.Ensurethattherelayhook(Fig.3)isengagedinthe
slotofthecontactorandslidetherelayinwardstillthe
coverisushwithcontactorribs.
 VII.Reconnectthedisconnectedmotorwirestorelayand
checkthecorrectnessofthestarterwiringbyreferring
tothewiringdiagram.

3
Replacement of coilFig. 3: Contactor – Relay Connection
Table A:
Motor
Rating
At415V3ph50Hz
StarterType
Relay3UW51 Back-upFuseRating
Cu
Cable
(mm2)
size
Max.FullLoadCurrent(Amp)
HP kW Range Code
##
HRC
type
3NA
7
Rewirable
3Ph,415V,
4PSquirrel
CageIS
8789:1996
Table4
3Ph,415V,
2P
Submersible
motorIS
9283:1995
Table2
1Ph,240V,
CSIRor
Split-PhaseIS
996-1979
Table9
0.33 0.25 3TW7291-1A*64 0.63-1 0J 2A 36SWG 1– – 3.8
0.75 0.55 3TW7291-1A*66 1-1.6 1A 6A 34SWG 11.7 – 7
10.75 3TW7291-1A*68 1.6-2.5 1C 6A 27SWG 12.2 – 7
1.5 1.1 3TW7291-1A*69 2-3.2 1D 10A 26SWG 12.9 3.25 13
2 1.5 3TW7291-1A*71 3.2-5 1F 16A 25SWG 13.8 4.5 18
3 2.2 3TW7291-1A*72 4-6.3 1G 16A 24SWG 1.5 5.1 6.5 –
5 3.7 3TW7291-1A*74 6.3-10 1J 16A 21SWG 1.5 8.1 10 –
7.5 5.5 3TW7291-1A*75 8-12.5 1K 25A 19SWG 1.5 11.4 14.5 –
7.5 5.5 3TW7291-1A*77 10-16 2A 25A 18SWG 2.5 – – –
10 7.5 3TW7291-1A*78 12.5-20 2B 32A 18SWG 415.4 19.5 –
* Code for operating coil voltage, 50 Hz (B for 200-400V, W for 415V)
Spare list
Sr.
No. Description Order No.
1Contactorfor200-400V 3TS30-10-0AZ608K
2 Contactorfor200-400V 3TS32-10-0AZ608K
3 Contactorfor415V 3TS30-10-0AR008K
4Contactorfor415V 3TS32-10-0AR008K
5 Relay 3UW5102-##
6 Coilfor200-400V 3TY7403-0AZ6
7 Coilfor415V 3TY7403-0AR0
81NOContactBlock 3SB54200B
9 ‘ON’&‘OFF’PushButton #
#–contactsales
Raja+Direct-on-line Starter
(ForSinglePhaseconnection)
Wiring Diagram for Single-Phase Motors
Note:Connect3/L2to2/T1bycableofsuitablesize.(Max.4mm2)
Hookonrelayfor
engagement
Contactor
outgoingterminals

Dimensional Drawing
RajaDirectOn-LineStarter
Siemens Ltd.
OrderNo.A5E41695269000A-AB
Productdevelopmentisacontinuousprocess.Consequently
thedataindicatedinthisLeaetissubjecttochangewithout
priornotice.Forlatestissuecontactoursalesofces.
SACHINENTERPRISE
Disposal
Siemensproductsareenvironmentfriendly,which
predominantlyconsistofrecyclablematerials.
Fordisposalswerecommenddisassemblingandseparation
intofollowingmaterials:
METALS:SegregateintoFerroustypesforrecyclingthrough
authorizeddealer.
PLASTICS:Segregateaspermaterialtypeforrecycling
throughauthorizeddealer.Becauseofthelonglifetimeof
SiemensProductsthedisposalguidelinesmaybereplaced
byothernationalregulationswhentakingtheproductout
ofservice.Thelocalcustomercareserviceisavailableatany
timetoanswerdisposal-relatedquestions.
CustomerCareTollfreeno.1800220987 Email:[email protected]
Mountingdimensions154x70mmandholedia6.5mm