Purchasing decisions increasingly influenced by energy efficiency
2nd Quarter 2010Electrical switching & drive systems & components
“Undoubtedly, investment costs for electrical drives are minor when compared to the overall investment in a system or plant,” contends Mrs Ute Bormann, GM sales and marketing, SEW-Eurodrive. “But the energy consumption of the selected drive technology has a decisive influence on the follow-up costs.”
“If one compares all costs incurred during the life cycle of a system, one will notice that the energy costs in systems that have not been optimised for energy consumption can constitute up to 90% of the follow-up costs,” Bormann continues. “The correct optimisation of the efficiency profile of each component, combined with the correct selection of the most appropriate drive technology to match the specific application, will achieve significant economic benefit.
“With these cost factors in mind SEW-Eurodrive launched its DR series range of motors in May 2010,” says Bormann. “The new modular system for AC motors offers millions of drive combinations that can be used in many different applications. Independent of the required energy efficiency class, the whole range of DR motor options is available in all efficiency levels. The motor complies with international standards and already complies with the new sections of the IEC motor standard.”
The new DR motor available from May 2010
The modular DR motor system comprises three energy efficient motor variants (IE1, IE2 and IE3) and offers an ideally matched brake concept as well as encoders which are integrated in the motor. The motor complies with IEC 60034, NEMA MG1 and CSA C22.2 requirements as well.
By combining all the different design requirements, this motor saves time and optimises processes in the areas of motor selection, ordering and logistics. Additional features such as brake monitoring, shaft centred hollow shaft encoder, thermal motor protection, temperature detection, air filters, fans and backstops, among others can be added depending on the customer’s requirements.
Online energy calculator
SEW-Eurodrive has added a user-friendly energy-saving calculator to its website. The calculator needs only a few details on the application and in return it will give users an estimated energy saving per annum as well as an indication of the amortisation period.
“Energy efficiency is a non-negotiable factor today,” concludes Bormann. “The total cost of ownership, determined in part by the term energy costs of an installation, cannot be ignored when selecting new products.”
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