Research Shows Copper Rotor Efficiencies for Motors

Motors using new die-cast copper rotors can reduce energy loss by 15 to 23 percent, compared with the current industry-standard motors using aluminum rotors, according to the Copper Development Association (CDA), New York.

07/12/2001


Motors using new die-cast copper rotors can reduce energy loss by 15 to 23 percent, compared with the current industry-standard motors using aluminum rotors, according to the Copper Development Association (CDA), New York.

"Adoption of this process by motor manufacturers for integral horsepower motors can mean an extraordinary reduction in electrical energy generating requirements worldwide, significant savings on electrical energy costs and an increased lifespan for electric motors," explained CDA's Dr. John Cowie.

This information, gleaned from a three-year CDA research effort, that was funded, in part, by the U.S. Department of Energy, the Air-Conditioning and Refrigeration Technical Institute and the International Copper Association, found that the use of copper rotors reduced motor operating temperatures by 5 to 32 degrees C.

According to Cowie, every 10-degree increase in a motor's operating temperature cuts the insulation life of the motor in half.

"Therefore, these data indicate the life of motors using copper rotors may be extended 50 percent or more, with maintenance," Cowie said.

For more information, see www.copper.org .





No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
Combined heat and power; Assessing replacement of electrical systems; Energy codes and lighting; Salary Survey; Fan efficiency
Commissioning lighting control systems; 2016 Commissioning Giants; Design high-efficiency hot water systems for hospitals; Evaluating condensation and condensate
Solving HVAC challenges; Thermal comfort criteria; Liquid-immersion cooling; Specifying VRF systems; 2016 Product of the Year winners
Driving motor efficiency; Preventing Arc Flash in mission critical facilities; Integrating alternative power and existing electrical systems
Putting COPS into context; Designing medium-voltage electrical systems; Planning and designing resilient, efficient data centers; The nine steps of designing generator fuel systems
Designing generator systems; Using online commissioning tools; Selective coordination best practices
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.
click me