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.
| Item |
Standard Specifications |
| Type of Motor |
Totally Enclosed Fan Cooled (TEFC) Squirrel Cage Aluminium Induction Motor |
| Design Standard |
IEC 60034-1 |
| Framesize |
80-132M |
| 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 |
| Power Conditions |
± 5% of rated voltage and ± 1% frequency± 1% phase unbalance |
| Efficiency Standard |
IE1 (IEC 60034-30-1) |
| Time Duty |
Continuous S1 |
| Cooling Method |
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 |
IP55 |
| Rotor Winding |
Squirrel cage, aluminium conductor with end-ring and wafter blades integrally cast |
| Environmental Conditions |
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. |
| Test Procedure |
IEC and full voltage measuring starting operation |
| Fan Cover |
Pressed steel |
| Shaft |
Carbon Steel, round shaft with key |
| Bearing |
Sealed, lubricated-for-life bearings |
| Painting |
Phenolic rust-proof base plus lacquer surface finish. Painting in ATT IE2 Green |
| Ground Terminal |
NE set inside the terminal box |
| Other Options Available (Contact ATT to inquire for other options) |
| VSD Driven |
Inverter duty motor suitable for VSD operation |
| Heaters |
Space heaters (110V/220V/1ph) or winding heaters available on request |
| Thermal Protection |
PTC thermistor 150°C |
| Insulation Class |
Class H |
| 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.
