"Littleboy" wrote in message Costs new, to
contractor. Not the list price, but what I figure the
"street price" is. I could be off, but these are the figures I
personally would use for an engineering estimate.

1) VFD, Square D Altivar 66 drive, 460v, 100HP, well optioned $12,000
2) AC Motor, 460v, 100HP general purpose, totally enclosed $4,000
2a)AC Motor, 460v, 100HP inverter duty, totally enclosed $6,000

100 HP ain't gonna do it. We need 250 HP anyway to equal a 350 - 400 HP
Diesel. 250 HP is going to be $20,000 and the frequency converter control
box is going to be another $15,000. When I went through this, I stopped
counting at about $60,000 just for the power source. Diesel is going to be
a lot cheaper I think.

Bill Daniels