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Kathleen Curry

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Variable speed drives on pumps

Synopsis 

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 percent can produce an energy saving of up to 50%. VSDs 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 should be included in costing. The financial viability of installing a VSD depends on the motor application and operating hours. VSDs tend to be most economical on large pumps.

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