I picked up a couple of 220V 1PH to 220V 3PH VFDs, rated for up to 3HP, for
under $300 each new. Don't recall the brand and I'm not home where I can go
look in the shop.
What I find insane is how *simple* electronic phase converters that do nothing
but change single to three phase, doing nothing to the voltage, no speed
adjusting, no remote control, no where to connect a braking resistor, are so
expensive. $1500 and all it does is exactly the same thing as an old rotary
phase converter.
So rather than a "plug and play" box for my Monarch 12CK I had to buy a fancy
box with almost 100 settings I had to fiddle with just to get it to run the
antique 3HP motor without hitting overload. Still have to slip the clutch a
little in higher gears but once it's turning it's 100% solid. Adding some
MolySlip gear lube to the headstock made it quieter and easier to get spinning.
On Saturday, December 26, 2020, 11:50:37 AM MST, John Dammeyer
<jo...@autoartisans.com> wrote:
I looked at prices for a 2HP 3phase and a VFD (like Hitatchi Vectorless?) and
found without shipping the price was approaching $600. For less than that I
ended up with Bergerda.
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