Motors and Drives
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Textile Manufacturing Machines A large textile manufacturer was negotiating with a Japanese equipment supplier to purchase 30 textile manufacturing machines, each equipped with 3 motors designed and built to metric specifications. The textile manufacturer requested efficiency data for the metric motors but the equipment supplier was unable to provide this information. The textile manufacturer obtained one of the machines, removed the 3 metric motors, and sent them to Advanced Energy for performance and efficiency testing. Advanced Energy was able to test the performance characteristics of the motors and assist the textile manufacturer with specifying NEMA replacements. These replacement motors were obtained by the manufacturer and sent to Advanced Energy for testing to verify performance and perform an economic analysis of the motor changeout. As a result of this analysis, the textile manufacturer purchased 30 of the machines but specified them without the motors. The $3885 cost of the metric motors was subtracted from the purchase price of each machine. The textile manufacturer then independently purchased the 3 NEMA motors for a cost of $1308 saving $2577 per machine for a total purchase price savings of $77,310 for the 30 machines. The NEMA motors averaged 3.5 efficiency points better than their metric replacements saving $354.04 in energy cost per year per machine. This results in a $10,621.20 savings per year on the 30 machines and a 30 year lifetime energy savings of $318,636. The three metric motors total cost of repair is $2330 whereas all three NEMA motors can be repaired for $785 saving $1545 per machine. Assuming each of the machines three motors are repaired twice during their 30 year life results in a $92,700 repair cost savings for the 30 machines. For More Information Contact Advanced Energy at (919) 857-9000 or moreinfo@advancedenergy.org.
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