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Danfoss drives keep Espoo water flowing

Espoo is Finland’s second largest city, with over 200,000 inhabitants, and relies largely on Danfoss drives for its water supply. Espoo Water has 140 Danfoss drives, including VLT®5000, VLT®6000 and VLT®8000 AQUA models, located in three potable water plants, one waste-water plant and numerous booster stations.
Danfoss VLT drives energy saving ECplus

Increase Efficiency - Save Energy

A key factor for energy savings in building services is the use of variable speed drives for compressors, pumps and fans.

There are two decisive factors here: the efficiency of the motor (and the machine) and the energy efficiency of the application control.

Because of their high efficiency, the use of motors with permanent-magnet rotors is increasing. Motors with this technolocy are know as 'EC motors' in the HVAC sector.

To allow the users to benefit from the high motor efficiency of EC technology in all areas, Danfoss has refined its tried and tested VVC+ algorithm - as used in the VLT frequency drives - and optimised it for operating PM motors.