Transcription of Understanding NEMA Motor Nameplates
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Understanding NEMA Motor Nameplates
Understanding NEMA Motor Nameplates Mission Statement 2 is to be the best (as determined by our customers) marketers, designers and manufacturers of industrial electric motors, mechanical power transmission products, drives and generators | Baldor Electric Company The National Electrical Manufacturers Association (NEMA) was founded in 1926 to develop and promote electrical manufacturing standards. | Baldor Electric Company 3 Who is NEMA? Manufacturer type Time rating Service Factor Efficiency Frame Size Design Code Rated horsepower Rated voltage and amps Rated full-load amps for each voltage level Rated full-load speed | Baldor Electric Company 4 NEMA states that the Motor nameplate must show: frequency Phase Insulation class Rated ambient temperature Locked-rotor code letter | Baldor Electric Company 5 HP Measurement of work done per unit of time | Baldor Electric Company 6 Volts Voltage rating at which the Motor is designed to operate most efficiently Motors are designed to operate at plus or minus a 10% tolerance of this value A Motor with a 460V rating c
Frequency Phase ... Energy Savings ... ABB drives and motors help solve the energy challenge More than 90 percent of industrial motors either cannot adjust their power consumption or use very crude methods to do so. Many always run at full speed, regardless of the actual output needed. In many applications, energy use can be cut to one-eighth ...
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