| Electric Motor Efficiency Requirements under EPAct |
| Electric motor efficiency is a measure of how much input power a motor converts to torque and horsepower at the shaft. Efficiency is important to the operating cost of a motor and to overall energy use in our economy. |
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| Fan Laws and Performance Formulae |
| The following Formulae can be applied to any fan provided the diameter does not change. If the diameter does not change the fans must be geometrically similar. The units of density, fan rotational speed and diameter are not important as long as both are the same. |
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| Practical Electric Motor Handbook |
| Practitioners in the various applied sciences tend to view electric motors as generic devices for converting electrical to mechanical energy. Certainly such a concept is entirely valid but in practice, however, it turns out to be just the tip of the iceberg; the very first prerequisite in grasping the basic framework of electric motor technology is an appreciation of the extensive classification needed to deal with these motors in the practical world. |
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