ECN Forum Forums General Topics of the Trade General Discussion Area 480 or 460 volt secondary ?

A 460V motor is intended to be run on a 480V nominal system. You do not have to worry about +/- operating range, nor do you have to adjust your transformer taps.

There is no major manufacturer of 480V or 600V or 240V three phase motors.

There is no major manufacturer of standard design 60hz power transformers with nominal voltage inputs and utilization voltage outputs (i.e. 600-460).