question

Marc avatar image
Marc asked

Is Two Multiplus-II 120v 2 phase configuration connected to 240 AC Generator supported

I was provided this setup from my solar reseller to connect my Off grid cottage and connected to a 14KVA 240v propane Generator.

The documentation of the Multiplus-II 120v refers to a 3 phase configuration but essentually I want only 2 Phases to connect properly the the 240V Generator.

My setup consist of

2 X Multiplus-II 120v

1X Victron SmartSolar MPPT 250/70

1X Cerbo GX (to auto start the generator and monitor the setup)

1X GX Touch 50

2X LiFePO4 lithium battery 51.2V/100Ah

Plan to connect

Generator to AC IN L1 to Multiplus-II #1 and L2 to Multiplus-II #2 and bridge the N together.

AC OUT L1 and L2 and Nutral to a Simens SquareD breaker Box


Do I require an Autotransformer or the Digital Multi Control GX box?

Many thanks


Generator
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1 Answer
mvader (Victron Energy) avatar image
mvader (Victron Energy) answered ·

Hi Marc, and welcome to community. Such system is perfectly possible. No need for an autotransformer.

Which documentation of that product refers to 120V only?

I just now checked this manual, and at least in 4.4.7 it mentions both options: https://www.victronenergy.com/media/pg/MultiPlus-II_12V_24V_48V_3kVA_120V/en/installation.html#UUID-6617b313-a3f4-68a3-5b93-c2bc90b2b225


See our auto transformer manual for when it provides manuals, the document in details explains all the various use cases: its like a Swiss army knife for split-phase applications, useful in various set-ups.

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