n SABI Magazine - Tydskrif - Motor system efficiency high on global agenda - energy

Volume 12 Number 2
  • ISSN : 2071-1883


With electric motors consuming almost 70% of industry’s energy, companies are always looking for better motor efficiencies. For many years, motor efficiency has been well defined; however, when driven by a variable speed drive (VSD), the VSD efficiency and the total efficiency of the VSD and the motor has not been well understood. For many years, motor efficiency has been well defined. Choosing the right product combination can also be more difficult as manufacturers’ data is not always easily comparable. This is where the international IEC61800-9 standard comes to the rescue, according to global motor and VSD manufacturer WEG.

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