What is a Variable Speed Drive?

Variable speed drives (VSDs) and other high-efficiency products are industrial electric motors where the speed can be adjusted by an external controller to make significant savings in energy usage.

How Does a Variable Speed Drive Work?

VSDs work like a ‘dimmer switch’ – they automatically reduce the speed of a motor when it is not busy. They can drastically reduce the amount of energy used in refrigeration, pumps, ventilation fans, air compressors etc.

Variable Speed Drives in the UK

Every year, several more million VSD motors are added. They are the workhorses of UK industry, driving machines, compressors, fans, pumps and conveyors in virtually all industrial sectors.

They also have the greatest energy-saving potential.

Benefits of VSDs

  • Energy savings
  • Increase profitability
  • Control over the drive
  • Fewer mechanical failures
  • Increase motor longevity
  • Reduced risk of motor damage during start up and stop