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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] ]

Ex 'p'- The alternative to explosion-proof electric motors (Ex'd')

The opportunity of widly common basic motors for Ex nA e and Ex px e allows to extend stocked motors for zone 2 to use in zone 1 in a relatively short time and also to get the certification from the notified body. Opposite to explosion-proof motors in flameproof design, the pressurized enclosure makes it possible to reduce the weight and frame size.

The customer resp. operator only requires:

  • Compressed air in sufficient quantities (depending on the type of construction and frame size)
  • Additional control cables


Possible modifications


Alteration of Ex nA e IIC T3 Gc motors
to Ex px e IIC T3 Gb for the operation in Zone 1

Basis: Motor II 3 G Ex nA e IIC T3 Gc
Result: Motor II 2 G Ex px e IIC T3 Gb

For diverse methods of cooling:

  • Rib cooling IC411
  • Air cooling IC611
  • Water cooling IC81W

Alteration from NDOR into PEDOR
  • Pump drive for marine operation
    with DNV certificate
  • Three-phase squirrel-cage motor
  • Ex px e IIC T3 Gb with
    pressurized enclosure
  • Make: HELMKE
  • Type: PEDOR400-02
  • Technical data:
    • 6,600 V
    • 750 kW
    • 02-pole
    • 50 Hz
    • IC 411
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