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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.
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.
6
7
Fig. 1: ASD-11 Starter
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 proofing. 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.
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
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
4
1. ON Push Button
8
2. OFF Push Button
3. Earthing Screws
4. Rubber Grommet (Not visible in Fig 1.)
1
5. Name Plate
6. Incoming Cable
2
7. Outgoing Cable
8. Cover Fixing Screws
9
9. Mechanical Latch (OFF push button) to be used for
preventing undesired ON operation of Starter
3
5
– Connect outgoing cables on the Relay (K1) terminals
and Delta contactor (Q3) terminals.
Tightening torque (N-cm):
kW Ratings
7.5 – 11
15 – 18.5
• 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.
Incoming Terminals
Outgoing Terminals
80 – 140
80 – 140
150 – 210
100 – 150