SIEMENS
Selection and ordering
HT-direct motors 1FW4 air-cooled
3/2
Siemens D 86.2 · 2007
3
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Overview
The motors are designed for the following rated voltages:
•
690 V
*
/50 Hz
•
400 V
*
/50 Hz
•
460 V
*
/60 Hz
Ambient temperature: -20 °C to +40 °C
Site altitude: Up to 1000 m above sea level
At higher ambient temperatures and site altitudes above
1000 m, a motor Order No. must be selected in accordance with
the derating factors (see Page 3/12). The order codes for the
cooling-water inlet temperature (see Page 3/6) and site altitude
over 1000 m (see Page 3/6) must also be specified in the order.
Degree of protection: IP55
Cooling method: IC416
Type of construction: IM B3
Overview of torques and outputs
in accordance with the rated speed
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Benefits
The well-proven cooling principle of the H-compact motors
forms the basis for the air-cooled HT-direct motors.
The constant cooling air flow independent of the motor speed
from the external fan assembly mounted axially at the non-drive
end ensures intensive, even motor cooling which is the basis of
a long lifetime.
Rated speed
rpm
Max. rated torque
Nm
Max. rated output
kW
200
23000
481
300
22250
699
400
21500
900
500
20750
1086
600
20000
1256
800
14100
1181