Siemens RAJA+ 3TE7421

1
RAJA
+
Fully Automatic Star
Delta Starter 3TE7421
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
+
Fully Automatic Star Delta Starter
Selection of Starter
• ReferTable1forrecommendedselectionof3TE7FASD
starters.
• FASDStartersareavailablein3framesizes–FASD1:upto
30HP,FASD2:40HP&50HPandFASD3:75HPsubmersible
pumpratings.
12
11
4
14
7
13
3
8
1
5
2
6
9
10
1. ‘ON’pushbutton(green)
2. ‘OFF/RESET’pushbutton(red)
3. Doorknob
4. MetalEnclosure
5. Door
6. MechanicalLatch(OFFpushbutton)tobeusedforpreventing
undesiredONoperationofStarter
7. Nameplate
8. LED(amber)toindicatehealthinessofincomingpowersupply
9. GreenLEDtoindicateMotorONstatus
10. Rockerswitch(ControlON/OFF)
11. DualVAmeter(Forindication)
12. PhaseSelectorswitch
13. Earthingscrew
14. StarterMountingbracket
Fig. 1: FASD Starter
Fig. 2: FASD Starter inside view
Pleasereadandunderstandtheseinstructionsbefore
installing,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
LMRAhas“Auto”modeselection.Usethisfunctionwith
caution,Motorwillrestartautomaticallywhenhealthy
powerisrestoredback.
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.
Complies to standard : IS/IEC 60947-4-1

Siemens RAJA+ 3TE7421 Specifications

General

Brand	Siemens
Model	RAJA+ 3TE7421
Category	Industrial Electrical
Language	English

Summary

Installation Procedures

Mounting and Cable Connections

Details on mounting the starter, removing grommets, using cable glands, and connecting incoming/outgoing cables.

Commissioning Procedures

Timer and Overload Relay Setting

Procedures for setting the Star-Delta timer and overload relay to match motor specifications for optimal performance.

Operation Procedures

Starting, Stopping, and Reset Operation

Steps for operating the starter, including checking LEDs, using selector switches, and manual overload relay reset.

Maintenance Procedures

General Maintenance and Component Replacement

Guidelines on general upkeep, cleaning, terminal re-tightening, and replacing contactors or overload relays.

Wiring Diagrams

FASD1 and FASD2 Wiring Diagrams

Schematic diagrams illustrating electrical connections for FASD1 and FASD2 starter models.

FASD3 Wiring Diagram

Schematic diagram detailing electrical connections for the FASD3 starter model.

Technical Data and Selection

Table 1: Starter Selection

Comprehensive table listing motor ratings, starter types, contactor MLFBs, overload relays, and cable sizes.

Table 2: Terminal Torque Values

Specifications for tightening torque values for various terminal blocks and components.

Table 3: Spares List

List of spare parts, including contactors, coils, LEDs, and timers, with their respective order numbers.

Selection of Contactor Coil and LMRA

Guide for selecting appropriate contactor coil voltages and Line Monitoring Relays (LMRA).

Dimensional Drawings and Disposal

Dimensional Drawings

Technical drawings showing the physical dimensions of FASD1, FASD2, and FASD3 starter enclosures.

Disposal Information

Guidelines for environmentally friendly disposal and segregation of product materials.