18 August 2016, 02:17PM
The installation of variable speed drives (VSDs) on pumps can be an effective energy saving measure. Lowering the speed of a motor by just 20% can produce an energy saving of up to 50%. Variable speed drives can be installed on all pumps, including those associated with HVAC systems. The VSD needs to be connected to a control signal and may also require installation of measurement devices or controllers, which typically are included in costing. The financial viability of installing a VSD depends on the motor application and operating hours. VSDs tend to be most economical when used on large pumps.