Locked rotor currents are a rating only. If you are looking at constant torque motors, they you may have a type F motor. Look at the nameplate and see if it has a TYPE anywhere on it. Under it's full load HP you will see the full load current. Startups are very current intensive and often...
I have a company that turns a 115V dc motor off and on while reading the feedback from a micro0pulse sensor (balluff.) They calculate the position and using a brake on the motor they try to sto0p this wo within .005". ROFL, I know. They have to slow the system down just to get it within .025...
