Siemens DOL 3TW7291-1A Leitfaden

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

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.

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

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.

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

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

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