Invertor required

**Clive S** · 10-01-2019

Originally Posted by scooterist007

I have never seen a vfd that you connect up to a 240v single phase supply to 415v three phase, I am a industrial engineer and have never come across one, I am sometimes wrong though! The only thing I have come across to power up single phase to 415v three phase is a phase converter, there are two types, a static variety which is not a true three phase supply, or a rotary variety which uses motors to generate a three phase supply.
But a vfd? I don't think they exist.

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https://www.ebay.co.uk/itm/Variable-...r=522061402594

**magicniner** · 10-01-2019

Another alternative, which is often used even on 7kw+ spindle motor applications, and is common in industry where 3 phase is not available or feasible is a transformer to achieve a higher input voltage and a VFD.

**scooterist007** · 10-01-2019

Originally Posted by Clive S

https://www.ebay.co.uk/itm/Variable-...r=522061402594

I think you will find that the 220v input is 220v three phase, not 220v single phase.

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**cropwell** · 10-01-2019

Originally Posted by scooterist007

I think you will find that the 220v input is 220v three phase, not 220v single phase.

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This one seems to be quite specific.

https://www.ebay.co.uk/itm/2-2KW-3HP....c100005.m1851

**Clive S** · 10-01-2019

Originally Posted by scooterist007

I think you will find that the 220v input is 220v three phase, not 220v single phase.

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The description seems to say

Variable-Frequency-Drive-Inverter-CNC-Motor-Speed-VFD-Single-To-3-Phase-220-380V

**scooterist007** · 10-01-2019

I know the listing says single phase 220v to three phase 380v, but it is £80 and if that is true, it is not only a vfd, it's a generator as well, I looked at the data plate and although it is quite blurry, it doesn't say in the output section that it's 380v, it only says 3 phase and 2.2kw, it doesn't state what voltage.

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**Chaz** · 10-01-2019

Originally Posted by scooterist007

I know the listing says single phase 220v to three phase 380v, but it is £80 and if that is true, it is not only a vfd, it's a generator as well, I looked at the data plate and although it is quite blurry, it doesn't say in the output section that it's 380v, it only says 3 phase and 2.2kw, it doesn't state what voltage.

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Very few actually make 380V. The HY ones DO NOT make 380V, they are listed as 220V and 380V input but do not upconvert. The Egogo (spelling) ones do but cost more. This seems to cheap for it to do the same ..... need true RMS meter and then see if it does, but dont be surprised if it does not.

**cropwell** · 10-01-2019

GH-1440A ? You could always ask Warco for their advice. Is the problem that you have moved the lathe out of the 3 phase environment ?

**sheffstaff** · 11-01-2019

Yes the Lathe has been moved from a 3 Phase environment I didn't know that the Lathe came from Warco ? I thought that they were from a place called Toolco.

**m_c** · 11-01-2019

Originally Posted by cropwell

GH-1440A ? You could always ask Warco for their advice. Is the problem that you have moved the lathe out of the 3 phase environment ?

It's not specifically a Warco model. Like lots of Chinese built machines, it'll be produced by a factory who will stick whatever logo you want on it, and give you a few different specification variations. Plus as it uses a pretty conventional naming convention (Gear Head 14" swing 40" between centres), it may of even came out of different factories, with some copies better than others (aka Sieg/Syil).

A quick google for GH-1440A brings up Warco, ToolCo, ETS, and Acra currently supplying that model. I'm sure there will of been more suppliers over the years.