Can split phase 240vac be used as an input for 3x of these units to output 208v 3-phase power? Trying to find an alternative to American Rotary Phase converter.
Thanks!
Thanks!
MPP Solar LV6548 3-phase input power
- Thread starter layertone
- Start date
Zwy
Emperor Of Solar
What do you intend to run?
If you look at the manual, page 53, it shows a 3rd leg input which I would assume would be the wild leg at 208V. Not sure how the MPP handles that input, but regardless, it appears you need that 3rd leg and it would require 3 LV6548's.
https://watts247.com/manuals/mpp/LV6548.pdf?x52188
If you look at the manual, page 53, it shows a 3rd leg input which I would assume would be the wild leg at 208V. Not sure how the MPP handles that input, but regardless, it appears you need that 3rd leg and it would require 3 LV6548's.
https://watts247.com/manuals/mpp/LV6548.pdf?x52188
Zwy
Emperor Of Solar
You could use a spinner pilot motor. Usually you can find a cheap 3 phase motor bigger than what you have on the machine by 1.5 times. You use another split phase motor to spin the 3 phase motor, the 3 phase will generate the wild leg.
Was looking for a more energy efficient alternative to the American Rotary AD40 https://www.americanrotary.com/products/view/ad-digital-smart-series/
Zwy
Emperor Of Solar
You will have losses no matter what, as there is conversion taking place. Basically, a rotary converter is just like a spinner pilot motor. It doesn't matter if you go to a transformer either, you still have conversion losses.
Zwy
Emperor Of Solar
Was watching a video Ian of Watts247 had put out and you can set one LV6548 to 208V, the wild leg for 3 phase.
Buying 5 LV6548's wouldn't be cheap. I think you might get by with 3, run off PV and battery. If you want grid charging capability, buy a AC to DC charger (although larger ones aren't cheap either). I don't know if what you propose would work, it might. Just remember the overhead per LV6548 is around 60 to 65W at idle, so 5 units x 60 is 300w x 24 hours would be 7200w you need to generate just to keep the units running in an idle capacity. You could turn some off such as the 3 to generate 3 phase power when you don't need it.
Personally, I'd try it with just 3 units as you will probably want 3 phase power off grid eventually to be permanent.
Buying 5 LV6548's wouldn't be cheap. I think you might get by with 3, run off PV and battery. If you want grid charging capability, buy a AC to DC charger (although larger ones aren't cheap either). I don't know if what you propose would work, it might. Just remember the overhead per LV6548 is around 60 to 65W at idle, so 5 units x 60 is 300w x 24 hours would be 7200w you need to generate just to keep the units running in an idle capacity. You could turn some off such as the 3 to generate 3 phase power when you don't need it.
Personally, I'd try it with just 3 units as you will probably want 3 phase power off grid eventually to be permanent.
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