AC motor restart transient

Hello, my question is, when an AC motor is restarted before the rotor has come to a complete stop, can the motor restart transient current be greater that the motor starting current at rest. I know that is the rotor is still turning there is a voltage being generated in the rotor. The reason that I ask is, here in the US the National Electrical code mandates that a fire pump be able to withstand a restart transient of 24 times the motor full load current. I know that motors have different characteristics based on the design letter and code letter. This just seems excessive.

HerbThank you,

 


asked 2 weeks ago
Herb2
Herb

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