Where I can find a three phase to single phase convertor?

[Tofo]

Dear all,

My machine will connect to three phases power 208V, but some of my electronics in the machine need single phase 110V . Where I can find a convertor to take care that?

Thanks

 

[Cow]

You need a 208v x 120v single phase transformer.

https://www.platt.com/platt-electri...xVoltsAC=208&xPhase=1&CatID=455&SubCatID=2168

 

[daba]

Are we to assume your 3-phase supply has no neutral ?

Here's a link to a website that gives various options, it appears as though your loading will be light enough just to use a transformer connected to two of the phases.

A standard (and cheap) 220 to 110V step-down transformer would probably do the job with no worries.

Although you will not quite get 110V, this is probably transformered down, rectified and smoothed anyway, so it's not gonna be a big deal.


edit: Cow beat me to it, and found a range of transformers fitted for the job...

 

[jjgulley]

If you actually have 208 3 phase you should have 120vac legs. Every 208 I've encounted is 120/208.

 

[Cow]

Just because he has 208V 3 phase doesn't mean he has 120v available. They most likely only brought 3 phases and a ground to the machine, no neutral.

 

[Tofo]

You need a 208v x 120v single phase transformer.

https://www.platt.com/platt-electri...xVoltsAC=208&xPhase=1&CatID=455&SubCatID=2168

Thanks. Exactly what I am looking for

 

[daba]

Thanks. Exactly what I am looking for

You just have to determine your power rating now, and choose the transformer next size up.