no, 208 x 100 = 20.8 kva = 20,800 va
20,800 watts @ 1PF

Oops. Thanks for catching that.

Still: 20,800 va @ 480V is 43.3•••A. That's not enough for the motor.

 

Oops. Thanks for catching that.

Still: 20,800 va @ 480V is 43.3•••A. That's not enough for the motor.

Perhaps not enough for a 75kva step-up xfrmr. The equip is only rated 16kW, but I suspect it does not run at 16kW.

 

75 kW is large power indeed. There generally are two ways how to act. Method first is larger hammer method - take the some 1 Ohm wirewound DIY resistor (guess the canthal wire will be about pencil thick) and fix the length what Your fuses may persist for short time exposure. And giant magnetic relay is shortening that resistor/resistors after certain count of seconds. System is very simple and self-explanatory, however there is one giant problem - such relays are damn expensive when over 32 Amps. Say, one three phase 25 A here may be bought for some 20-30 Eur whilst 120 Amp I tried and had offer of 1200 Eur, thus I said no dear.
Sub-version of this is to substitute that damn relay with the thyristor or symmistor (triac), but the overall result will be far weaker than for next idea.
Thus way two - in most of applications the aim was to charge up the capacitor battery for SMPS, thus the some kind of rectificator battery will be imminent. Guess it is 3-phase full wave Graetz circuit. Then it would be very foolish to loose 2 Volts onto triac closing the wound megaresistor, in there already are diodes, and, note, the thyristor brick costs the same money like diode brick or even cheaper. At diode price for 1 Amp it is no-matter thing does it cost 1 cent or 2 cents, but when at 160 A the diode cost may vary between 60-160 Eur a piece the money plays the certain role. So, substitute the diodes with triacs and then add the zero-crossing opto-driver to it. If will choose to open them just anywhere the grid inspectors will crack You very soon and painful, thus I am sure the zero crossing is must-to-be. Then bit witchcraft about overall driving that together and voila. How that was solved by me, may read in the sci article - just google for it by my name (Janis Blahins) and keywords like 100 kW 36 kV SMPS design experience or somehow similarly.