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

Insulation voltage rated value	690 V
Surge voltage resistance rated value	6 kV
Protection class IP	IP20
Number of poles	3
Product designation	3TW7291-1A
Size of the circuit-breaker	00
Size of load feeder	00
Shock resistance	15 g
Relative humidity during operation	95%
Type	3TW7291-1A
Rated operational voltage	690 V AC

Summary

Raja+ DOL Starter (Self reset)

Selection of Starter

Refer Table A for recommended selection of 3TW72 starters.

Installation, Operation & Maintenance Instructions

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.

NOTICE

This product has been designed for environment A. Use of this product in environment B may cause unwanted electromagnetic disturbances.

Installation

Details on fixing the starter housing and connecting cables.

Operation

Instructions for starting and stopping the motor using push buttons.

Reset Operation

Procedure for automatic reset of the overload relay after tripping.

Maintenance

Guidelines for cleaning, screw tightening, and replacing components.

Table A: Starter Selection

Spare list

Raja+ Direct-on-line Starter Wiring Diagram

Dimensional Drawing

Disposal