Three-phase motors reduce energy use in drive systems

Lenze Americas Corp. introduces the MH Series of high efficiency motors rated at 80% to 92% efficiency. The new Lenze IE2 L-force three-phase ac motors meet or exceed global regulations aimed at reducing energy consumption, while improving overall drive system performance.

The IEC 60034-30 standard, Rotating electrical machines – Part 30: Efficiency classes of single-speed, three-phase cage induction motors, specifies the international efficiency (IE) codes for induction motors. In an effort to harmonize global efficiency levels, changes have been made to IE values to ensure consistency with international values.

Beginning June 2011, the EuP (European Parliament) has mandated that electric motors in continuous operation with a power of 0.75 to 375 kW must be in efficiency Class IE2 or higher. As an example, in round figures, the minimum efficiency for a 7.5 kW motor is 85% at IE1 and 88% at IE2.

For more information, contact Lenze Americas Corp., 630 Douglas St., Uxbridge, MA 01569. Phone: (800) 217-9100.