ECN Forum Forums General Topics of the Trade General Discussion Area 50 kw motor?

I have a 3phase 50kw A.C. motor on a new air compressor that is being installed. The manufacturer of the Air compressor says it is a 75hp motor. How can that be? It seems to me a 75 hp motor would be more like a 90kw motor. Or am I all wet?
This 50 kw motor is on VFD.
My question is, Should I take the mfg's word for it and treat it like a 75 hp or should I treat it like a 50kw motor. I plan to run it on 480volts.
It is a Europeon motor and it is set up for wye/ delta starting.
The nameplate has very little info. it says "400 v 50kw."
Any help would be appreciated.