Siemens TE7291-0A Series Guide

Installation:
• Removethefrontcover.
• Mountthestarteronaverticalwall/platefreefrom
vibrationswithpropernutsandbolts.ReferFig.8for
mountingdimensionsandFig.4forpermissiblemounting
position.
• Removetherubbergrommetsfortheincomingand
outgoingcableconnections.
• Connectincomingandoutgoingcablesasfollows(Refer
Fig.2&3):
 – Usepropercableglandstoensuredustproong.For
conduitentryusepackedwashers.
 – SelectcorrectsizeofcablesfromTable-A
 – Connectlineandmotorleadsexactlyasperwiring
diagrampastedinsidethecoverofthestarter.
 – Terminatetheincomingcableonterminalblock.
Automatic Star Delta
Starter 3TE7291-0A
For dependable service, it is of utmost
importance that instructions given below are
followed for selection, inspection, installation,
commissioning, operation and maintenance.
s
ASD-11 Starter (Self reset)
Selection of Starter
• ReferTableAforrecommendedselectionof3TE72
starters.
 TableA:kW/HPRating,thermaloverloadrelayrange&
fuserating,CoilVoltage,Maximumfullloadcurrentfor
differenttypesofmotors.
1. ONPushButton
2. OFFPushButton
3. EarthingScrews
4. RubberGrommet(NotvisibleinFig1.)
5. NamePlate
6. IncomingCable
7. OutgoingCable
8. CoverFixingScrews
9. MechanicalLatch(OFFpushbutton)tobeusedfor
preventingundesiredONoperationofStarter
Fig. 1: ASD-11 Starter
 – ConnectoutgoingcablesontheRelay(K1)terminals
andDeltacontactor(Q3)terminals.
 Tighteningtorque(N-cm):
kWRatings IncomingTerminals OutgoingTerminals
7.5–11 80–140 80–140
15–18.5 150–210 100–150
• Connecttheearthingconductortoterminalsmarked
(earth)onthestarterbody with torque 80 to 140 N-cm.
TheStarterisnowreadyforcommissioning.
• Initiallysettheoverloadrelayto0.58timestherated
motorcurrent.
• Setthetimerdialtothenearestvalueofstartingtime
availableonmotornameplate
• Ifitisnotavailablethensetthedialtoapproximately
6-8secs.
Installation, Operation & Maintenance
Instructions
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
6
7
4
8
1
9
3
2
5

2
 Forexactsettingoftimerandoverloadrelay,followthe
instructiongivenbelow:
Before switching ON recheck all external connections
• Star-DeltaTimersettingforASD-11:
 – Firststartthemotorbypressingthe‘ON’buttonshown
inFig.1
 – Measurethetimetakenbythemotortonearlyreach
ratedspeedorsteadystatecurrentcondition(indicated
whenthemotorreachesasteadyhum).
 – Stopthemotor.Setthetimertothismeasuredvalueby
rotatingthedialshowninFig.5.
• Overloadrelaysetting:
 – Forcloserprotectionsettheoverloadrelaytoactual
phasecurrentasmeasuredbyanammeter.
 – OverloadrelaycharacteristicsshowninFig.6canbe
usedtoestimatetheaveragetrippingtimeatdifferent
multiplesofsetcurrent.
 – Intheabsenceofanammeter,usetheproceduregiven
below:
Fig. 2 & 3: Cable Connections
Fig. 4: Maximum permissible mounting position from vertical plane Fig. 5: Timer Adjustment
Commissioning: Read the note carefully before commissioning.
 – Startthemotorandletitrunfor30mins.Then
graduallyreducetherelaysettingstillittrips.Setthe
relayataslightlyhighervaluethanthissetting.
 – Restartthemotoraftersometime.Iftherelaydoesnot
tripthenconsiderittobeproperlyset.Iftherelaytrips,
setatalittlehighervaluethanbeforeandrecheck.
• Fixthefrontcover with Torque of 100 to 130 N-cm.
Caution
• Duringcommissioningormaintenancealwaysensure
that the main supply is disconnected by switching off
the main switch.
• InthecaseofASDstartersundernocircumstances
should the relay be set higher than the phase current
i.e. 0.58 times the rated current on the motor name
plate.
• Iftherelaytripsevenwhensetatratedmotorcurrent,
the suitability of the starter/relay for the particular
application should be checked with the nearest
Siemensofce.
Dial

3
Operating Characteristics:
Thegivencharacteristics(Fig.6)areaveragevaluesofall
rangesandsizesofbimetalrelaysandaremainlyintended
toindicatetheinversetimecurrentcharacteristicsofthe
Operation:
• RotatetheLatchawayfromOFFpushbutton
• Forstartingthemotor,pressGreenpushbuttonmarked‘I’
(Fig.1)
• ForstoppingthemotorpressRedpushbuttonmarked‘O’
(Fig.1)
• Thisisin‘Self-Reset’mode.Inthismodeeven,ifthe
relaytripsonoverload,itwillbeautomaticallyresetina
maximumof4minutes.Themotorcanberestartedonly
aftertherelayisreset.
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.
Fig. 6: Operating characteristics of 3UW51/52 relays
same.Thetrippingtimesofthesame.Thetrippingtimes
shownareforrelaysstartingfromthecoldstate.Atoperating
temperatures(heatedatratedcurrent)thesearereducedto
about25%ofthevalueobtainedfromthecharacteristics.
• ReplacementofOverloadRelay(ReferFig.7):
–Removal
 1. Disconnectthewiresconnectedtotherelayterminals.
 2. Slightlyloosentheoutgoingterminalscrewsoftheline
contactor.
 3. FollowinstructionsgiveninFig.7forremovalofrelay.
 – Re-xing
 1. Select&taketheoverloadrelayofsamerange.
 2. Connecttherelayterminals(L1,L2,L3)to(T1,T2,T3)
ofQ1Linecontactor.
 3. ReferFig.7fordetails.
Careshouldbetakentoxtherelayterminals&relay
to contactor in the exact position shown in Fig. 7
 4. Ensurethatrelayhookisengagedatcontactorhousing
slotatbase.
 5. Tightenthecontactorterminalscrews.
 6. Re-connectthedisconnectedwiresandcheck
connectionsbyreferringtothewiringdiagram.

Table A: Automatic Star - Delta Starter Type Ref: 3TE7291-0A
Motor
Output
at
415V
(kW/HP)
I()
4Pole
Squirrelcage
motor
ContactorLine ContactorDelta ContactorStar Recommended
Overloadrelayat50ºC
Recommended
FuseSwitch
RecommendedCu
Cablesize
(mm2)
Line
cur-
rent
(A)
Phase
cur-
rent
(A)
TypeReference Type-Code
Relay
Range
(A)
Type
Backup
HRC
fuse
rating(A)
Incoming
(from
supply)
Outgoing
(tomotor)
7.5/10 16 9.2 3TS3210-0A*08K 3TS3201-0A*08K 3TS3210-0A*08K 3UW5102-1J 6.3-10 3KL812 20 2.5 1.5
9.3/12.5 19.5 11.2 3TS3210-0A*08K 3TS3201-0A*08K 3TS3210-0A*08K 3UW5102-1K 8-12.5 3KL812 25 4 2.5
11/15 23 13.2 3TS3210-0A*08K 3TS3201-0A*08K 3TS3210-0A*08K 3UW5102-2A 10-16 3KL812 25 4 2.5
15/20 32 18.4 3TS3300-0A*08K 3TS3300-0A*08K 3TS3210-0A*08K 3UW5202-2B 12.5-20 3KL812 50 10 4
18.5/25 38.5 22.2 3TS3300-0A*08K 3TS3300-0A*08K 3TS3210-0A*08K 3UW5202-2C 16-25 3KL812 50 10 4
* Code for operating coil voltage 50 Hz (Z6 for 200-400V, R0 for 415V)
Other Tables:
Star-Delta Timer:
AC Input Voltage MLFB
230V-400V
380V-440V
3RP1576-1NP208K
3RP1576-1NM208K
Other Tables:
Motor Output at
415V
Type4)
kW HP (ASD Starter)
7.5 10 3TE72910AW74
9.3 12.5 3TE72910A.75
11 15 3TE72910A.77
15 20 3TE72910A.78
18.5 25 3TE72910A.79
4)Entercodeforoperatingcoilvoltage,50Hz(Bfor200-400V,Wfor415V)
Spares:
Sr.
No. Description Order No.
1Contactor3TS3210.. ReferTableA
2 Contactor3TS3201.. ReferTableA
3 Contactor3TS3300.. ReferTableA
4 Relay3UW51.. ReferTableA
5 Relay3UW52.. ReferTableA
6 Coilfor200-400V 3TY7403-0AZ6
7 Coilfor415V 3TY7403-0AR0
8 1NOContactBlock 3SB5420-0B
9AuxBlock1NO 3TX4010-2A
10 AuxBlock1NC 3TX4001-2A
10 ‘ON’&‘OFF’PushButton #
#–contactsales
Replacement of coilFig. 7: Contactor – Relay Connection
Hookonrelayfor
engagement
Contactor
outgoingterminals

Notes

Dimensional Drawing
AutomaticStarDeltaStarter
Siemens Ltd.
OrderNo.A5E41708219000A-AD
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.
Formoreinformationcalluson18002091800 Email:[email protected]
MountingDimensions259x219andholeDia7.0mm
Fig. 8: Dimensional Details for 3TE72 91-0A**