Have an emergency?

No problem. We are also available after business hours via our emergency cell phone. Contact us for any emergency service.

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

 

Highlights

04.06.2018 [ [more] ]

New Factory in SarstedtIn addition to the existing plant, a new state-of-the-art manufacturing facility is under construction at the HELMKE site in Sarstedt (near Hannover, Germany).[ [more] ]

Drive systems - engineered by HELMKEHELMKE is a worldwide acknowledged competence for the delivery of complete drive systems. The converter cabinets engineered by HELMKE are projected and manufactured for customized and branch-specific applications.[ [more] ]

Sample

Squirrel cage motor
  • Russia
  • Type: DKK450-02 
  • Technical data:
    • 750 kW
    • 6.000 V
    • 50 Hz
    • 02-pole
  • IP 55 / IC 611 
  • M = quadratic

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

Reference Steel Industry
  • Turkey
  • Three-phase squirrel cage motor for a steel works
  • HELMKE type DKK500-02
  • Technical data:
    • 2,500 kW; 13,200 V; ± 10%; 50 Hz; ± 2%
    • Speed 2.975 rpm, 02-poles; IM B3, IP 54, IC 611
  • Mechanical and electrical drop-in re-construction, 100% interchangeable to existing machine
  • Accessories:
    • oversized terminal box for current transformers,
    • 3 current transformers mounted at main terminal box
    • 3 current transformers mounted at star point terminal box
    • additionally flow rate meter, water leakage detector, pressure gauge
    • vibration sensors 4 - 20mA,
    • 3 surge arrestors mounted at main terminal box
    • 1 surge capacitor mounted at main terminal box


Sitemap   Ι   Imprint   Ι   Legal notice   Ι   General terms and conditions