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T +49 5066 90333-0
emergency(at)helmke.de 

 

Highlights

05.05.2017 HELMKE - Hannover Fair 2017 Electrical Machines and Drives expertise and innovation since 1922 [ [more] ]

6 MW HELMKE FULL LOAD TEST FIELDTo meet customers requirements and HELMKE's aspiration to work always with state of the art technologies, the HELMKE Group has invested in a new testing field on its location in Pulversheim, France. The testing field is also available for final customer inspections and external testing orders.[ [more] ]

HELMKE 24/7 DELIVERY PROGRAM 5 MW SOFTSTARTER AVAILABLE FROM STOCKThe HELMKE group, with a heritage of motor and generator sales/stock­ keeping/production going back more than 90 years, is continuously investing in its production facilities and its extensive stock. [ [more] ]

Sample

Drive for a dryer fan for sugar beet shreds

Characteristics / Requirements:

  • The fan is mounted horizontally in the air duct, approximately 8 m above the ground.
  • Compound motor / fan via cardan shaft.
  • The speed shall be adjusted depending on the machining process.

Solution: HELMKE three-phase squirrel-cage motor, frame size 800:

  • 1800 kW, 764 1/min., 690 V, IP 55
  • IMV2 (standing on a non-drive side flange)
  • Cooling method IC511 (also because of the higher vibration resistance)
  • Special bearings to withstand the increased axial forces.
  • Temperature rise F/B for frequency inverter operation
  • Steel-welded casing construction
  • Form coil winding with 3 kV insulation for operation on 690 V converter drives
  • Frequency converter with active supply unit to reduce the network-side
    Harmonics.
  • outgoing du/dt filter
  • Adaptation of the interfaces to the customer's requirements
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