If the nameplate of a motor is missing, how can one determine whether the motor is 11 kilowatts or 15 kilowatts?
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As the title says. Are the dimensions of these two types of motors different in some way?
By measuring the dimensions of various parts on the outside of the motor and comparing them with the technical specifications provided for the motor, it is possible to determine the motor’s power.
Is it measuring no-load current? How much can the difference between the two be?
Relationship between the starting current and normal operating current of a three-phase motor: it is 5-7 times for direct starting, 3-5 times for reduced-voltage starting, and the locked-rotor current of a three-phase motor is 7 times. The single-phase motor is 8 times. The percentage of no-load current in a three-phase AC motor relative to its rated current is 2.68×3.06. Relationship between the rated current and no-load current of AC motors _ Baidu Wenku https://wenku.baidu.com/view/69a91517d5bbfd0a78567341.html