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, 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
3
13
12
6
1
7
2
4
5
8
11
9
10
1. ‘ON’ push buttons (green)
2. ‘OFF’ push button (red)
3. Cover fixing (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
certified components. Commissioning and maintenance by
qualified 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
