Suppose I have a typical smallish (say, <3kW) three phase induction motor. Likely 400V star-connected, but methods that work with any motor would be preferred.
I can ensure that the supply phase rotation is in whichever order I like, but would prefer not to need to alter the motor once installed, which will be before power is applied. So guess-and-check once livened is not feasible.
Three phase power is not available during installation, but single phase 230V power could be. I can spin the motor by hand or by power. Reaching operating speed is not required, only enough to determine direction.
How can I identify which way the motor will spin with a given supply phase rotation?