The operating characteristics defined in this standard are coded onto the motor nameplate at time of manufacture to help guide the end user with safe and reliable application. In an effort to standardize these basic performance and operating parameters of a motor, the National Electrical Manufacturers Association (NEMA) takes the lead in defining these ratings in NEMA Standard MG-1.
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With so many different uses for motors and the wide variety of electrical systems that power them, it should come as no surprise that there are many different performance ratings and operating characteristics that must be taken into consideration when choosing an electric motor for a particular application. Magnetic fields created by electrical charges are the driving force behind motors which generate the torque required to perform useful work. These rotating machines are used in nearly every form of modern life from simple residential appliances to large industrial facilities and manufacturing plants.Ĭhildren's toys, vacuum cleaners, fans, power tools, electric vehicles, mechanical pumps, elevators, and freight trains are just a few examples of the wide range of applications where you will find some form of electric motor. Photo: TestGuyĪn electric motor is the workhorse that converts electrical energy into mechanical energy using the principles of electromagnetism.
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Electric Motor Nameplate Ratings Explained.