AT Series – Standard Efficiency (IE1) 3 Phase Aluminium Induction Motor
ATT AT Series compromises of 3-phase, squirrel cage, IE1 standard efficiency (IEC 60034-30-1) motors in Aluminium die cast frame.
A removable foot mount is integrated in AT Series motors as an additional feature to enhance its capability. It can be used for general purpose applications in machines as well as in areas which have weight limits due to lighter aluminium frames.
Type of Motor
Totally Enclosed Fan Cooled (TEFC) Squirrel Cage Aluminium Induction Motor
Voltage and Frequency
Standard stock available are:
220-240/380-415V/50Hz for 2.2 KW & below
380-415/660-720V/50Hz for 3KW & above
Other voltages & frequency such as 200V, 346V, 440V & 60Hz can be supplied on request
± 5% of rated voltage and ± 1% frequency± 1% phase unbalance
IE1 (IEC 60034-30-1)
Self external fan, surface cooling (IC 411)
Method of Starting
Full voltage direct on line starting or star-delta starting
Insulation & Temperature Rise Class
Class F insulation and Class B temperature rise
Degree of Protection
Squirrel cage, aluminium conductor with end-ring and wafter blades integrally cast
Place: Non-hazardous, shaded
Ambient temperature: -20°C to 40°C
Relative humidity: Less than 90% relative humidity (non-condensation)
Altitude: Up to 1,000 metres above sea level
Direction of Rotation
Standard motors are suitable for operation in either direction of rotation of shaft.
Direction of rotation can be reversed by interchanging any two of the power lines.
IEC and full voltage measuring starting operation
Carbon Steel, round shaft with key
Sealed, lubricated-for-life bearings
Phenolic rust-proof base plus lacquer surface finish. Painting in ATT IE2 Green
NE set inside the terminal box
Other Options Available (Contact ATT to inquire for other options)
Inverter duty motor suitable for VSD operation
Space heaters (110V/220V/1ph) or winding heaters available on request
PTC thermistor 150°C
Degree of Protection
Up to IP66
The table below contains the various types of mounting available for AT Series motors. If you are unable to find the dimensions to the mounting you prefer, please contact us for the outlining dimensions.
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