Siemens 3TW7291-1A User Manual

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,ContactorMLFB’s,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
11
10
5
1
12
6
2
3
4
9
7
8
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.RelayDial
4.RedKnob
5.ContactorIncomingTerminalScrews
6.ContactorOutgoingTerminalScrews
7.WiringdiagramLabel
8.Links
9.Gasket
10.Grommet
11.MountingScrewhole
12. ContactCarrier
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

Siemens 3TW7291-1A Specifications

General

Brand	Siemens
Model	3TW7291-1A
Category	Controller
Language	English