question

samaya avatar image
samaya asked

Two Multiplus in Series - How?

Hello!

I can't find a diagram on how to connect two 220v Multiplus 12/1600/70 in series to double the watts.
I am attaching a pic, if someone could show pls..

Or you set them via software?
Any help is appreciated!multiplus-in-series.jpg

Multiplus-II
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

2 Answers
delf67 avatar image
delf67 answered ·

Running them in series is possible, but not an officially supported configuration. Your shore power feeds into the 1st MP. Then the AC out from the 1st MP goes into the AC in of the 2nd MP. The output from the 2nd MP then goes to the load. They can run from different batteries.

The recommended way to double the output with 2 units is to run them in parallel. This will require configuring the units as Master and slave with (free, downloadable) software. You will also need a VE.bus to USB adaptor and a computer. The shore power is split and taken to both units. The AC output from both units is also joined before going to the load. There also needs to be a VE.bus connection between them and they must run from the same battery bank. All of the cable lengths for both AC and DC wiring must be of equal length to each unit for them to run correctly.

Appropriately sized fuses/ breakers and appropriate thickness cables must also be used.

If you intend doing this you should look through the (free) online training on the Victron professional portal before attempting it.

5 comments
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

samaya avatar image samaya commented ·
Thank you! Do you dubble also the charging amps to 140A?
0 Likes 0 ·
delf67 avatar image delf67 samaya commented ·
Yes.
1 Like 1 ·
samaya avatar image samaya commented ·

,,,Both negative and positive goes to the Distributor, right?neg-pos.jpg

0 Likes 0 ·
neg-pos.jpg (54.2 KiB)
kevgermany avatar image kevgermany ♦♦ samaya commented ·
Yes.

Connecting correctly in parallel as described will double power and battery charging current. As well as the amount of power assist. Bestake sure your cabling is able to handle the extra power.

-1 Like -1 ·
samaya avatar image samaya kevgermany ♦♦ commented ·

Yes.., thank you!

0 Likes 0 ·
Duivert NL avatar image
Duivert NL answered ·

hi, you're welcome!

yes, the new schematic should work, for safety i would suggest an fuse/breaker on the 230v output to

2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.