The National Electrical Manufacturers Association (NEMA) published NEMA Premium® 2014 General Specification for Consultants, Industrial and Municipal: NEMA Premium® Efficiency Electric Motors
The intent of this specification is to outline the minimum requirements for three-phase ac induction motors applied to municipal and industrial applications for operation on voltages 5000 volts or less, rated 2500HP or less, operating more than 2000 hours per year at >75% of full-load.
This latest edition of NEMA Premium®
2014 includes revised and updated efficiency tables appearing in NEMA MG 1-2014.NEMA Premium® 2014
may be downloaded at no cost or purchased in hardcopy for $49 on the NEMA website.
NEMA is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Rosslyn, Virginia. Its 400-plus member companies manufacture a diverse set of products including power transmission and distribution equipment, lighting systems, factory automation and control systems, and medical diagnostic imaging systems. Total U.S. shipments for electroindustry products exceed $100 billion annually.