Variable torque applications often involve pumps and fans. However, a distinction has to be made in the case of pumps. Although the most popular types of centrifugal pump have a quadratic torque (variable torque) characteristic, eccentric, vacuum or positive displacement…
This article is the 5th and last part in our series Using VFDs in Refrigeration and Cold Storage Applications. When selecting a Variable Frequency Drive for refrigeration and cold storage applications there are a number of important selection…