3 phase motor question

[adamnlazybum]

So I bought a dayton 3/4 hp for my south bend 9a. I might have read incorrectly but is it possible to wire a 220/440 3 phase motor on a vfd to use on 115v outlet. or do i need to use to it on 220, because i recall reading some post a while back that i could use this voltage on a vfd down to 115v.

Any links to how to wire it properly? Thanks.

 

[DavidR8]

You can buy 120v input/240v output VFDs. I used on on my surface grinder. No issues.

 

[adamnlazybum]

You can buy 120v input/240v output VFDs. I used on on my surface grinder. No issues.

so the motor is ok then, its the vfd that i need to make sure is 115/120

 

[DavidR8]

so the motor is ok then, its the vfd that i need to make sure is 115/120

That's right. I used a Teco VFD on my surface grinder FWIW.

 

[Ulma Doctor]

I bought a very inexpensive 1.5kw 120v single phase input, 220/3phase out for about $100.
I ran my Boyar-Shultz surface grinder on it until i got the 3 phase pulled network to all my machine stations

 

[DavidR8]

I bought a very inexpensive 1.5kw 120v single phase input, 220/3phase out for about $100.
I ran my Boyar-Shultz surface grinder on it until i got the 3 phase pulled network to all my machine stations

Which make and model VFD Doc?

 

[Ulma Doctor]

Which make and model VFD Doc?

Huanyang VFD,Single to 3Phase,Variable Frequency Drive,1.5kW 2HP 110V/120V Input | eBay

There is enough space for cooling between each component, and the product casing is designed with multiple holes, the above features can make this VFD have a longer service life. 【Warranty】: 1 Year replace.

www.ebay.com

 

[DavidR8]

Huanyang VFD,Single to 3Phase,Variable Frequency Drive,1.5kW 2HP 110V/120V Input | eBay

There is enough space for cooling between each component, and the product casing is designed with multiple holes, the above features can make this VFD have a longer service life. 【Warranty】: 1 Year replace.

www.ebay.com

Brilliant, thanks!

 

[Ulma Doctor]

Brilliant, thanks!

Happy to help out anytime

 

[mksj]

Just be aware that the current at the wall needs to be twice as much at 115 vs. 230 VAC input. So for the most part you are limited to ~ 1Hp on a 15A circuit and 1.5Hp on a 20A circuit. Breaker wiring is not designed to be run at more than 80% of the breaker size, and there are other wiring/breaker requirements for VFD's. In this application, a 1 Hp VFD with a voltage doubler which outputs 3 phase at 230VAC are available through multiple VFD manufacturers.