Energy Savings and Efficiency Improvements for Thames Water Using Vacon AC Drives

15th January 2014 | Posted by Charlotte Miskell

Vacon 100 Flow variable speed drives have been recently used by Thames Water to greatly increase efficiency, leading to massive long terms savings.

By fitting VACON 100 FLOW ac drives (VSDs) to the three main inlet pumps at Newbury sewage treatment works (STW), it has been made possible for Thames Water to achieve large energy savings complemented by significant reductions in downtime. The energy savings alone will cover the cost of the VSDs and their installation in less than two years.

Developed specifically for pump applications, VACON 100 FLOW VSDs combine exceptionally high operating efficiency with the latest film-capacitor technology to ensure an increased lifespan and lowest total expenditure.

Thames Water had found that using soft start control utilised in the main inlet pumps caused large surges to the inlet screen system, causing pump blockages throughout the site.

With the inlet pumps being subjected to blockages constantly, replacing them did not provide an adequate solution to the problem. The installers of the 100 Flow AC Drives were confident however that the anti-ragging and cleaning features provided as standard by the 100 FLOW variable speed drives would be effective.

100 Flow Vacon Drives In Use

The new 100 Flow Vacon drives have completely eradicated ragging issues with the pumps at the Thames Water site, and process control has significantly improved. There are no longer surges when the pumps start, due to the fact that acceleration is closely monitored and controlled and this has resulted in significant downtime reductions across the whole site, leading to greater savings of time and money.

For more information on how these Vacon drives can improve the efficiency of your application as well as achieving significant energy savings, contact Proplas International today. We supply and install a range of AC Drives including Vacon variable speed drives.


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