SINEWAVE OPTIMIZED motors and inverter-duty products for variable-speed pumping from Nidec Motor Corporation offer water industry customers two certified NEMA Premium efficient vertical hollow shaft product lines. SINEWAVE OPTIMIZED motors, from 7 1/2 to 600 hp, meet DOE efficiency requirements and provide a lower-cost alternative to inverter-duty motors, and provide construction and reliability. U.S. MOTORS brand inverter-duty motors, from 15 to 600 hp, have features designed to protect against the punishing effects of pulse-width modulation waveforms generated by inverters. The ACCU-SERIES line of drives and panels deliver high wire-to-water efficiency. 888/637-7333; www.nidec-motor.com