Energy Saving

Variable Speed Drives - The Race to Energy Efficiency

Reducing energy usage saves money, enhances your companies reputation and assists in the fight against climate change; it makes perfect business sense.

Installing Variable Speed Drive technology on appropriate applications could save energy, cut costs and increase profit margins. To understand how this works, first we must look at how a Variable Speed Drive works.

Electric AC induction motors run at a fixed speed and are ideally suited to applications where a constant motor output speed is required. However over half of all motor application have some kind of varying demand, such as pumps and fans. Historically, processes would have been controlled using opening and closing dampeners and valves, all whilst the motor speed remained constant.

In the 1980’s, Variable Speed Drives (VSDs) started appearing on the market offering an alternative method of control. A VSD also referred to as a ‘drive’ or ‘inverter’ is an electronic power controller that is able to adjust the electrical supply to an AC induction motor with a corresponding change in the motor’s speed and torque output.

Pumps, fans and compressors consume vast amounts of energy. They can be over engineered or running at full power even when they don't have to. Fitting a Variable Speed Drive to your fixed speed pump, fan or compressor allows the motor to run at a speed, which is appropriate to the requirements of the process. Because energy and motor speed are exponentially related, even a relatively small reduction in speed can result in a significant energy saving. Fitting a VSD to an electric motor is an attractive, cost-saving project for many businesses, as it can provide quick results and a relatively short payback.

Digicon Offer The Following Services:

• Surveys & Application Reports
• Energy Saving Calculations
• Full Turn-Key Projects
• Supply, Installation & Commissioning
• Spares & After Sales Support
• National Coverage
• Loan/Hire Service

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01455 251610

“Climate change is happening, and it is happening fast. We must all take our responsibility to reduce energy consumption seriously for the sake of our Grandchildren and their Grandchildren. Installing VSD technology to reduce your carbon footprint makes perfect business sense; reduce energy consumption, and increase your business’ reputation and profitability.”
– Molly Jones, Director.


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