Thank you! I now find out that-June 26 2011 at 12:35 PM
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Response to Rotary Phase Converter, Var. Freq Drive or Hybrid- What would you choose?
the Electrician is concerned about the HP running thru converter, and the possibility of a TIG being used occasionally. I think that more than anything he is an older fella that has used a lot of converters when there was major mfg in the area and he probably does not have the same comfort with the electronics and programming that the VFD implies. I think my compromise is going to be both. Split the system and use a converter in one area of the shop and a VFD in another (and gain the experience in using a VFD that I don't have). I know it less efficient, but it is also a safe bet- I live in a fairly rural area, the closest significant city being 1.5hrs away- thus the drive to use known local tradesmen (no pun intended).
You guys have really peaked my interest in the VFD, which seems to be more available in the smaller sizes and cost less. Now I'm going to have to find out more! Thanks again for the input, it is appreciated!