Smoke Extraction Motor Series

Smoke Extraction & Fan Motors

ATT Smoke Extraction Motors are specifically designed to meet demanding and critical industrial applications such as fire emergencies and more. Smoke extraction systems are employed in a wide range of environments including large buildings, shopping malls, factories, warehouses, enclosed parking lots, tunnels, among others.


This motor is made to provide a life-saving role through fastest possible extraction and clearance of toxic fumes and smoke at high temperature during emergencies. Incorporating these smoke extraction motors into your rescue or emergency systems may mitigate damage to property and financial loss by preventing the accumulation of smoke, reducing environment temperatures and the delay in rate of fire spreading.


ATT Smoke Extraction Motors are compliant to EN 12101-3 which determines the standard for “Smoke and Heat Control Systems”. All ATT Smoke Extraction Motors are tested and certified to operate for two hours at a temperature of 250°C, 300°C and 400°C.



ClassTemperature (ºC)Duration
F250-120250 ºC2 hours
F300-120300 ºC2 hours
F400-120400 ºC2 hours

STANDARD SPECIFICATIONS

ItemStandard Specifications
Type of MotorTotally Enclosed Air Over (TEAO) Squirrel Cage Cast Iron Induction Motor
Design StandardIEC 60034-1; EN 12101-3
Framesize80-400
Voltage and FrequencyStandard 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; ± 1% frequency and ± 1% phase unbalance
Efficiency StandardIE1 / IE2 / IE3 (IEC 60034-30-1)
Time DutyContinuous S1 or (S2 – (250°C or 300°C or 400°C/2hours – once only)
Cooling MethodFan application motors without a cooling fan, cooled by the airstream of the driven machine (IC 418)
Method of StartingFull voltage direct on line starting or star-delta starting
Insulation & Temperature Rise ClassClass H insulation and Class B temperature rise
Degree of ProtectionIP55
Rotor WindingSquirrel cage, aluminium conductor with end-ring and wafter blades integrally cast
Environmental ConditionsPlace: 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 RotationStandard 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 ProcedureIEC and full voltage measuring starting operation
Fan CoverPressed steel
ShaftCarbon Steel, round shaft with key
BearingGrease pre-packed shielded ball bearing
LubricationHeat resistant grease
PaintingPhenolic rust-proof base plus lacquer surface finish. Painting in ATT red.
Ground TerminalNE set inside the terminal box
Terminal Box & Lead WiresSupplied with separate terminal box and 1 metre extended lead wires



Other Options Available (Contact ATT to inquire for other options) 
VSD DrivenInverter duty motor suitable for VSD operation
HeatersSpace heaters (110V/220V/1ph) or winding heaters available on request
Thermal ProtectionPTC thermistor 150°CWinding or bearing RTD (PT100)
Degree of ProtectionUp to IP66

MOUNTINGS

The table below contains the various types of mounting available for Smoke Extraction Motor Series. If you are unable to find the dimensions to the mounting you prefer, please contact us for the outlining dimensions