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dlenardu
08-08-2009, 08:11 PM
I just bought a Harig Super 618 surface grinder. It is a 1 hp 3 phase motor. I'm wondering what kind of phase converter I need. Will a static converter be sufficient or do I need to go to a rotary?

Al_The_Man
08-08-2009, 08:54 PM
What voltage? static or rotary would most likely work.
Have you considered a VFD? Even if it is just fixed to 60hz.
Al.

dlenardu
08-08-2009, 10:44 PM
Sorry, it's 220v. Is a VFD cheaper than going either rotary or static?

Al_The_Man
08-08-2009, 11:30 PM
For a 1 hp it probably would, if you just need it for one machine.
Al.

dlenardu
08-10-2009, 08:14 AM
I see that with a static converter I only get 2/3 hp. With a VFD will I get full Hp? Also when buying a VFD do I need to get double the HP size like with a RPC?

Al_The_Man
08-10-2009, 09:40 AM
Check with the manufacturer, some quote a derating % when used on 1 ph.
Something like a surface grinder kept at 60hz I don't think would be a problem.
Al.