I would like to use 2 x Multiplus II 800 in parallel, because I need a cont. output of 9,2 KW at up to 40 degrees Celsius.
Refering datasheet it´s not posible to opérate 2 x 800 in parallel:
Virtually unlimited power thanks to parallel (not for the 8k and 10k models) and three phase operation
Ist that correct? Or is there a solution to operate in parallel an connect to a Cerbo GX?
It wouldn't be mentioned in the datasheet if it would be possible.
It is a hardware limitation.
If you need 9,2kW you could use a 15kVA Quattro.
Jan from Victron Sales says it is a feature that will be supported in the future, so why would she say that if it were a hardware limitation that would prevent that?
Also, as you're aware, the Victron manual does not specify this limitation and on Page 32 erroneously indicates that the 48/8000 can be operated in parallel.
Victron should also consider taking off its advertisement of parallel operation on its data sheet given that 3 of the 5 models (a majority) cannot operate in parallel. At least make it far more clear on the data sheet than it is now.
The original question and my answer are around 11 months old.
I'm pretty sure Jan is a "he" not "she" ;)
My last information about that is from September 25th 2022 from Matthijs Vader (Victron CEO) and is still the same:
It isn't possible now and maybe needs a new HW Version.
Where does Victron advertise that ALL MP-II can be paralleled?
Yes, it is not 100% clear in the manual and there is a "copy and paste"-error, but that will be fixed in a few days.
Here is another question about that topic with the same (still correct) answer:
The manual covers all models and does not specify in any of its discussion that paralleling doesn't apply to any model. That's implicitly stating that all models can parallel.
In addition, on Pages 31-32 it gives two diagrams for all models and specifically lists paralleling through the VE.BUS for all models as an option.
As I already wrote this is an error in the manual and will be fixed soon.
Hi @AlaskanNoob,
Apologies for the confusion. As you have already learned, the information in the manual regarding the MP-II 8k, 10k and 15k in parallel configuration is unfortunately incorrect and will be corrected as soon as possible.
Victron is constantly working to improve the accuracy and clarity of our documentation.
It is normal for shipping to be charged to the customer for goods return.
That may well be the case, but It doesn't change the fact that a trained Victron dealer wrongly and specifically said two 48/8000 inverters would operate in parallel which was incorrect, and that Victron's manual for the Multiplus II erroneously stated the units could be operated in parallel. That customers are expected to pay three times the shipping (shipping the units here originally, then shipping them back, and then shipping up a replacement that does what we were told the original units could do) in order to fix the mistakes of Victron may be normal under the warranty.
But expecting customers to pay even more money to cover for Victron's mistakes while Victron itself provides absolutely nothing to make a customer whole after Victron caused the issue is poor business practice in my view. Hopefully that isn't the path that Victron takes here. It would be nice if Victron took some responsibility for its multiple mistakes that led to us being in this situation.
Thank you for your help. Make sense, that it is not possible, if it is not mentioned in the datasheet. Sorry for my stupid question ;-(
I have had a look at your suggestion using a Quattro. As I could see here in this forum the Quattro is like the old Multiplus and doesn´t include the ESS which is part of the Multiplus II. So the Quattro is not able to feed the PV surplus into the grid? Is that through?
Has there been any update on the use of 8k and 10k MP units in parallel ?
Sadly, I still don't know the answer to this question, but:
If it's the case that the manual is correct that the 48/8000 can operate in parallel, then Victron needs to update their troublesome data sheet that says it cannot operate in parallel. It's causing a great deal of confusion.
If, however, it's the case that the 48/8000 cannot operate in parallel, Victron should:
I still have no idea if the 48/8000 can operate in parallel or not because of the conflicting information.
The datasheet is clear about that:
But I see the problem in the manual at 4.4.7.
I forwarded it to Victron and it will be edited to be more clear at that part of the manual.
But:
Jan Klumpenaar from Victron Sales just emailed me and stated the Multiplus II 48/8000:
Any update on this?
I'm also keen on an update. I'd much prefer to use a MP-II 15kVa in parallel to a similar Quattro configuration.
