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VEM 27.09.2016

New series of VEM medium-speed generators for land and sea



VEM high voltage generators and motorsThe new series of generators is  engineered for outputs up to 21 MW at voltage levels 6 kV and 11 kV in 50 Hz and 60 Hz systems. Fields of application for such synchronous generators include not only permanent installations on land, but also offshore use and installations aboard ships and oil platforms. The generators serve to provide continuous power supplies in stand-alone or grid-parallel situations, and are equally suitable for emergency power supplies and peak load operation. They are used successfully together with diesel or gas motors, as well as water, gas or steam turbines.

The development has been fuelled by decades of experience gained in the manufacturing of high-voltage machines at the VEM location in Dresden, paired with the latest know-how in electromagnetic and mechanical design, unrivalled expertise in high-voltage insulation, innovative cooling technologies, digital control systems and cost-efficient manufacturing methods.

Key properties

  • modular and compact design
  • high levels of efficiency
  • quiet operation
  • grid-stabilising characteristics
  • long service life
  • simple installation and commissioning
  • low maintenance requirements


Overview of generator series:

  • Shaft heights: 900–1120 mm
  • Number of poles: 8 to 12 poles (other pole counts upon request)
  • Protection rating: IP 23 or IP 44
  • Type of cooling: IC 0 A1 or IC 8 A1 W7


Basic version:

  • Output range 1: 2,650–21,000 kW
  • Output range 2: 500–18,000 kW
  • Voltage: 6.3 (6.6) and 10.5 (11.0) kV
  • Frequency: 50 or 60 Hz
  • Power factor cos phi: 0.8
  • Thermal class: 155 (F), utilisation to 155 (F)

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