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W4_R

VEM EX MOTORS, “tb”, Zone 21 (dust)

Dust-classified motor for potentially explosive environment, zone 21, Ex tb IIIC T125°C Db

  • frame sizes 56 – 315
  • power range 0,09 kW – 315 kW
  • 400/690 V 50 Hz
  • mode of operation S1
  • relubrication device (NS) as standard starting from frame size IEC 200
  • insulated bearing, thermistors (TPM), 1 kpl/phase as standard starting from frame size IEC 250
  • speeds 3000, 1500, 1000, 750 1/min
  • robust, low-vibration grey-cast iron design
  • protection class IP 65 as standard
  • thermal class 155 (F) as standard, class 180 (H) available as an option
  • cooling method IC 411
  • energy efficiency classes IE2, IE1 and non-classified
  • available also classified for frequency converter operation
  • voltage range “zone A” as standard