Electric motors when selected appropriately can serve you for years. Keeping its operation and maintenance part up-to-date can add up some more additional years to the motor’s life. However, there are certain factors that have to be considered while the selection of motor. One of them is nameplate rating. Most amateur people don’t actually realize the importance of nameplate rating and end up buying model that doesn’t fit into their requirements.
As a matter of fact, electric motors are sized or rated under standard set of circumstances. In simple terms, there are different categories of motors which are designed for different purposes. While making choice, consider nameplate rating, as it determines the performance, service life, and describes procedures for curbing internal motor heat.
If you choose electric motors having lower power than what it actually needs, it can create excessive load over the machine. For instance, if a motor with 40 HP (Horse Power) is over loaded under condition like accidentally using it to drive larger load than 40 HP or operating under low rated voltage, the machine will draw extreme amperage in order to supply the demanded power to manage the load. Overload power which when exceeds the nameplate rating the motor will turn hotter than its ability to bear temperature. This will in turn affect the machine in terms of deteriorated winding insulation and eventually shortens its life. This is due to the reason that the motor conductors and insulation are not designed to handle power loads more than the nameplate ratings.
Nameplate ratings illustrate the operating parameters and convey the information to the users. It tells users that if the model is suitable for their application. Hence, it simplifies the process of selecting motors.
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