question

nomad avatar image

MultiPlus Three Phase Setup with Option for Single Phase Mode?

I am installing a 3phase Setup with 3 Multiplus 24-3000 in an offgrid camper setup.

Input will be single phase. I will not need the 3phase configuration all the time.

Is there any way to switch to single phase mode with only one Multiplus active and back to 3phase if needed? Therefore saving standby power of 2 Multiplus when 3000VA would be enough?

I understand that if I switch off 2 Multiplus the system will give a failure and not work at all.

Best Regards

multiple inverterscampervan
2 |3000

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2 Answers
marekp avatar image
marekp answered ·

@Nomad

You can build system like this,

screen-shot-2021-10-19-at-33026-pm.pngand use only one phase when 3 phases are not needed.

If you need more power than 1 MP can provide, connect additional single phase loads to the other 2 phases.


2 |3000

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nomad avatar image
nomad answered ·

In my case, all phases are alwyas connected but the AC distribution allows for using just one phase. But I understand, that if I switch off MP 2 & 3, the system will not work at all?

1 comment
2 |3000

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Onece you connect them as 3 phase system, turning off one of them (or two) will trigger an error and all will switch off.

If you need more single phase power on one phase than the others, you can buy more powerful Multiplus for that purpose, and generate 3 phase power from 1 phase line with 1ph/3ph inverter.