Motors with Copper Rotors Can Cost Less to Produce - Update readers know that simply substituting copper for aluminum in electric motor rotors can either: (a) increase electrical efficiency when motors are held at the same size, or (b) reduce size and weight when horsepower and/or efficiency are held constant. For example, Update recently reported that several motor manufacturers who directly substituted copper for aluminum saw significant increases in efficiency in an agricultural irrigation application (See Update, October 2004). Designers can also trade off efficiency, size and power against each other to optimize motors for given applications. MORE >>

Update: Copper Motor Rotor is published monthly by the Copper Development Association Inc. to provide current information of interest to those in the electric motor and related industries. CDA assumes no responsibility or liability in connection with this publication and makes no warranties of any kind with respect to the information contained herein.