Motors and Drives
Efficiency as standard
Heikki Kervinen explains what the new energy efficiency standards mean and how you can benefit from them.
E
nergy efficiency in industrial manufacturing is currently a hot topic as the new EN50598-2 standard published in December 2014 has put it firmly in the spotlight. The goal is to get further
efficiency and energy savings, with the standard introducing new IE classifications for total efficiencies in the complete drive module (CDM) and the power drive system (PDS). Presently the IE classification applies only to motors, but the new standard will take a broader approach for complete variable speed drives (VSD) and motor packages. This is not without reason. Motors consume an astonishing 28% of the world’s electricity and most pump and fan applications are oversized to err on the side of caution in meeting a system’s maximum
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demand. Variable torque applications often obey the cube law, which means power demand increases to the third power of the speed. Therefore a small increase in speed requires a lot more power but, conversely, a modest speed reduction can mean big energy savings. Modern intelligent motor control methods such as variable speed drives can play a key role in increasing energy efficiency, with substantial financial and environmental benefits. As a major manufacturer of both motors and
drives and therefore total power drive systems, ABB strongly supports the new standard because it is very much aligned with its existing philosophy. With proper
The new EN50598-2 standard will help OEMs and industrial users to get better operational efficiencies.
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