Criteria for classifying motor power
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Common power ratings for motors include 1.1KW, 1.5KW, 2.2KW, 3KW, 4KW, 5.5KW, 7.5KW, 11KW, 15KW, 18.5KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 200KW, 220KW, 250KW, 280KW, 315KW, etc. Why is that? What is the basis, and what principles are used for the classification? Please give your advice
GB755-2008 Rotating Electrical Machines – Ratings and Performance
This needs to be consulted with the motor manufacturer; from the manufacturer’s perspective, there is no need to study such issues – focus should instead be on proper maintenance of the motors.
This is the common motor power. Because it is used frequently, it is equally easy to select and maintain later on. It is also convenient for motor manufacturers, as components such as the frame can be modularized. High-power motors that are not used frequently, no matter how large they are, are manufactured specially; their capacity depends on the equipment they are to be used with, so there is no fixed capacity