Try your local SquareD distributor again and ask to see literature on the
Altivar 11 series. Reasonably priced and go from 1/4hp to 1hp. If you need a
larger size the Altivar 31 goes from 1/4hp to 3 hp. If you are looking to
control a larger yet size, the Altivar 71 will go up to a 7.5hp.. Also what
are you trying to do with it? If you are looking to run a 3ph. motor with a
1ph drive, it maybe a waste of money. Cheap drives burn up quite easily.
You didn't mention what size you need, but a 1 HP 230 volt, single phase
input, three phase output drive is $125.00 (GS1-21PO).
Of new equipment, AFAIK AutomationDirect (search on the web, probably
www.automationdirect.com) has the best deal. They have 2 or 3 lines
of VFDs. The largest 1ph to 3ph converters are 3HP; above that they
only have VFDs with 3 phase input.
Does anyone know of VFDs with 1ph input and 3ph output that are larger
than 3HP (typically 10-11A at 220V)? I haven't done an exhaustive
search, but have not found any VFDs that can be used on 1ph input
larger than 3HP.
In used equipment, there are many sources. Obviously ebay. There are
also several dealers that specialize in used equipment. The way I
work it: Find the manufacturer that makes the equipment, then find
used dealers for the equipment using google.
The address in the header is invalid for obvious reasons. Please
reconstruct the address from the information below (look for _).
_firstname_@lr_dot_los-gatos_dot_ca.us (in 1166839545.69032@smirk)
| Does anyone know of VFDs with 1ph input and 3ph output that are
| larger than 3HP (typically 10-11A at 220V)? I haven't done an
| exhaustive search, but have not found any VFDs that can be used on
| 1ph input larger than 3HP.
I have a Delta (VFD-B, I think) single phase input / three phase
output rated for 7-1/2 HP. I use it with a 5 HP spindle on a ShopBot
and have been happy with it. You can see it in the second and fourth
photos on the web page at the link below (it has a beige case with
black single phase cable, an orange three-phase cable, and a phone
wire.) I think I have a better photo somewhere - let me know if you're
interested in seeing it.
DeSoto, Iowa USA
I knew that Sq. D. used to make up to 30hp in a 1ph to 3 ph vfd but I
didn't know Delta drive made them that big. The Delta machines 43-255x
lathe has a 2 hp Delta drive ( made by Delta drives) on it. I'll look
into their line of drives. Thanks everyone, Merry Christmas.
Jack (in email@example.com) said:
| I knew that Sq. D. used to make up to 30hp in a 1ph to 3 ph vfd but
| I didn't know Delta drive made them that big. The Delta machines
| 43-255x lathe has a 2 hp Delta drive ( made by Delta drives) on
| it. I'll look into their line of drives. Thanks everyone, Merry
I went digging through a pile of photos last night and found one of
the Delta VFD-B - and it seems that I didn't quite have the capacity
right. It's rated for 10hp rather than 7-1/2. I'll post a photo of the
whole thing on abpw with a close-up of the output rating.
DeSoto, Iowa USA
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