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Understanding NEMA Motor Nameplates - Rocky Mountain …
• Choose the correct rating for the application –Oversized motors have lower efficiency and power factor NEMA Premium –Highest efficiency 75 - 100% of rated load
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THE MYSTERY OF MOTOR FRAME SIZE - Rocky Mountain …
www.rockymountainbaldor.comTHE MYSTERY OF MOTOR FRAME SIZE INTRODUCTION Industrial electric motors have been available for nearly a century. In that time there have been a great many changes. One of the most obvious has been the ability to pack more horsepower in a smaller physical size. Another important achievement has been the standardization of motors by the National