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Motor Inrush Current Calculation Guide by gbcassociate is a document available to read on EtoBox.
What is Motor Inrush Current Calculation Guide about?
When a motor is turned on, it draws a much higher current for a fraction of a second, known as inrush current. This is because the motor windings act like a short circuit until energized. To calculate the expected range of inrush current, find the locked rotor code on the motor nameplate and look it up in the NEMA code table to get a kilovolt-amp range. Multiply this range by 1000 and divide by the motor voltage to get the inrush current range in amps. The inrush current only lasts a fraction of a second as
- Author
- gbcassociate
- Language
- EN