110v to 220v transformer

That's only 100 watts, it would need to be 10X that. Also, it would give you one 220 leg instead of two 180 deg out of phase 110 legs, which probably isn't going to work for what you're talking about.


Edit to add: I think there actually is a way to do what you're talking about with a multitap transformer forcing the center tap to ground? I know the two legs in your house are not two legs from the power company, they generate two legs at the transformer from a single line, so what you're looking for can be done, but it would probably be simpler to just run a new line.
 
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What Nathan said. I think a 1 HP, 240V motor will use 1000 - 2000 watts. So - no. I have no idea what that transformer would be used for?
 
kdogmcg said:
I happened to see this http://tools.woot.com/offers/100-watt-converter-transformer-w-usb-3?ref=tg_cnt_wp_2_16 on my favorite deal a day site and it got me thinking. Could something like this be used in a situation where you wanted to run a 3 phase motor with a vfd and you only have 110v circuits available?
Click to expand...

Transformers don't create power, which is the product of current and voltage. If a transformer doubles the voltage, the output current will be cut in half as compared to the primary side current because ideally, not considering transformer losses, power in equals power out. So lets say that you had a 2hp 220V motor that you wanted to run and the current draw was about 10 amps. The total output power would be 10 amps times 220V for 2200VA. (transformers are properly rated in Volt-Amps, not Watts) So your transformer would have to be rated at a minimum of 2200VA. The input current draw on your 110V side would be 2200VA divided by 110V for 20 amps. You would not be able to run this circuit on a 20A breaker. You'd have to move up to a 30A breaker.

As far as phase is concerned, this would not be an issue since the VFD's create the phase difference to run the motors. The 220 that you have coming into your house is actually a single phase source. Its the 2 110V circuits that are 180 degrees out of phase.
 
The short answer to your question is yes, it can be done with the proper transformer, but its not practical. Your much further ahead of the game putting time and energy into running a proper 220V circuit.
 
KB electronics

Kbac 27d

VFD

It will do one and a half HP motor on 110vac

It's the most HP you can get from a 110vac supply
 
He's saying it's the only vfd that will power a 11/2 HP motor off 110

Sent from my XT1095 using Tapatalk
 
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