Multiplus II Hardware Revisions Compatibility - For three phase configuration

DIY
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Hi all.

I am going to put 3x MPII 10kVA units into three phase configuration - as these cannot natively support parallel config, three phase operation is the simplest solution to have a 30kVA supply. I already have one unit running in single phase mode, bought a few months which was manufactured this year in week 28 (2428).

I have searched google, the old community page and there are several posts stating that you need to match the three units production dates closely to ensure they all work together and have the same hardware revision. However, there is no detail or hard and fast rule about how to match them via serial numbers are nor is there anyway to check what hardware revision each unit has - well not that is publicly known that I have found.

Example, if I buy two additional MPII 10K units in December and their manufacturing dates are week 40+, how do I know for certain they are compatible with my existing unit?

Existing unit is PMP483105000, SN HQ2428KEVZ6. It would be great to have exact knowledge of what manufacturing dates I need to stay within to match it with the above serial number. Say between 2410 and 2450.

Regards,

2

You should ask your local Victron dealer about that.
Give him your SN + PN and ask him to get units as close as possible.

But for 3 phase that’s not so important, because each device is working on it’s own.
It’s more important for parallel units.

3

Hi Matthias,

Unfortunately it isn’t that simple as asking the Victron dealer. The supplier I buy my Victron gear from is just that, a supplier with no real technical knowledge or support for Victron. Amazing pricing, but support is at my own whim.

I do have other local Victron dealers to go though, however I don’t particularly enjoy using their time when I am not buying any products through them. My intent is to query what serial numbers my supplier has on hand and place and order based on that.

Asking the local dealer to source close units doesn’t seem like a definitive solution for hardware compatibility. Unless the dealers have access to more detailed information that the general public.

Noted, and that does make sense to a degree. As they are all still linked together via VE Bus and on the one Cerbo I would assume some degree of hardware compatibility is required given all three units must stay in 120 degree phase shift from one another.

4

Mine are almost 2 years apart, so i wouldn’t worry to much about in 3 phase, parallel is a different story

You can ask your current supplier where you want to buy them for serials then you will know enough

1 Like
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Thanks Marc.

That is good to know.

It would be good if there was some official documentation on this topic. Even hardware revision printed below the serial number.

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Some inverters have a HW version number, mine does

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I have read that elsewhere that some do yes. Is yours a 3 or 5kVA unit?

Your three inverters have different HW versions in your three phase setup?

8

I have 3k inverters, one of them had an hw revision sticker (the older one) the other 2 dont have it

So i dont know if there are different, but they work flawlessly together