question

mfrederick avatar image
mfrederick asked

Victron Autotransformer 3ph 208v to spilt ph 120/240

I want to use the 100a victron autotransformer to solve a 208v problem I have with a mobile solar solution. My solar setup connects to 3ph 208v using only two legs of 120v....So L1=120v L2=120 but L1-L2=208v. 50% of the time my mobile connects to split phase 240v.

My users are completely ignorant of the difference. They think 120+120=240 which is never the case in 3ph.

My inverter supports both case but must be set in the config to do such.

What happens is they connect 208v when its configured for 240v and it blow a circuit board.

I need 50a to run my mobile solution so here is my question.

Is it possible to run one or two victron auto transformers to use the 120v legs to 240v?

I've done this with single 120v to split ph 240 but that was 30a max required.

Can one victron use 2 legs of 120 to output split phase 240v?

If not, can I use two victrons to grid combine breaker the outputs then send 240v split to my mains breaker?

Insights welcomed.







Autotransformer
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1 Answer
mvas avatar image
mvas answered ·

Yes, it is possible to create 240v split phase output, with 120v single phase input with an Autotransformer. But there are strict limitations!!!

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