Electric motors and machines

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IE3-W41R, W42R

VEM IE3 TRANSNORM MOTORS

Surface cooled squirrel cage motor

IP 55 – IC 411 – thermal class 155 (F) – B3
IE3 efficiency classification according to IEC 60034-30; 2008

  • frame sizes 315 – 400
  • power range 55 kW – 710 kW
  • 400/690 V 50 Hz, 460 V 60 Hz
  • mode of operation S1
  • speeds 3000, 1500, 1000, 750 1/min
  • robust, low-vibration grey-cast iron design
  • protection class IP 55 as standard, higher degrees up to IP 66 on request
  • thermal class 155 (F) as standard, class 180 (H) available as an option
  • available also with insulated winding for 500 V frequency converter operation (KU-insulation)

VEM – MADE IN GERMANY

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OPTIMIZED COOLING SYSTEM

Internal cooling circuit is done with twin-circuit system with double fan.  Circuit 1 leads via cooling channels in the rotor, circuit 2 via the air gap and return of both circuits through the inside cooling channels. Balanced temperature conditions in the machine with low rotor temperatures extends the life cycle of the motor.

355-400-450-frames-cooling systemtemperature-without-special-cooling

Picture 1: temperature with internal fan, picture 2: temperature without internal fan