Yes, ordered and received in early September from:
https://www.continuousresources.com...on-energy-multiplus-ii-24-3000-70-50-2-x-120v
VICTRON 24V Multiplus II 2x120v Purchase Availability
- Thread starter Photog1
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https://www.continuousresources.com...on-energy-multiplus-ii-24-3000-70-50-2-x-120v
HighTechLab
AKA Dexter - CTO of Current Connected, LLC
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quick reply @fafrd - bench tested and it is working.
At first I had trouble where it was counting the load as a "critical load" instead of AC load...there is a setting in the ESS menu on the cerbo which you select your current sensor. I had selected "External Meter" instead of "Inverter/charger" - when you select inverter/charger, it uses the CT on the inverter charger, not the internal meter (plugging in the CT overrides the internal meter).
So yes, it works perfectly on a 2x120 and I'm going to film a video as soon as my forklift driver is done moving some pallets in from the parking lot.
At first I had trouble where it was counting the load as a "critical load" instead of AC load...there is a setting in the ESS menu on the cerbo which you select your current sensor. I had selected "External Meter" instead of "Inverter/charger" - when you select inverter/charger, it uses the CT on the inverter charger, not the internal meter (plugging in the CT overrides the internal meter).
So yes, it works perfectly on a 2x120 and I'm going to film a video as soon as my forklift driver is done moving some pallets in from the parking lot.
Fantastic! Looking forward to your video.
Another quick question about the Cerbo.
I’m reading on various Victron Forums that the lowest-cost solution to configure the Multiplus II if you have a laptop is to install a free software application and purchase the USB adapter for the Multiplus II.
Will this solution allow the Zero Export to CT functionality to be configured in the Multiplus II or is there some reason a Cerbo is mandatory?
Here’s a video showing how a laptop + USB adapter can be used to configure a Victron Multiplus:
I’m interested to understand whether this same solution can be used to configure the Zero Export to CT capability you’ve demonstrated on the Multiplus II 120x2.
While I at it, I’m also interested to know whether you know anything about Victron’s new EV charger: https://www.victronenergy.com/accessories/ev-charging-station
It’s a smart charger capable of charging with only excess PV export.
Do you by any chance know whether Victron has any plans to introduce a bidirectional charger supporting V2H such as the bidirectional charger Emporia Energy plans to introduce next year: https://uploads-ssl.webflow.com/5ff...2de84a391b2e2_V2X Charger Technical Specs.pdf
This question is a bit off-topic for this thread but Victron’s primary value-add (in addition to high-quality) is their ability to integrate their various offerings together seemlessly.
So a Victron bidirectional charging solution integrated i to their overall ecosystem would be a very compelling architecture / solution.
HighTechLab
AKA Dexter - CTO of Current Connected, LLC
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Mandatory. There is no ESS operability built into the MK3 dongle, only programming the assistant. The Cerbo is what does the calculation and control of the ESS because it is meant for tying into the solar controllers / rest of the system.
Victron came out with a Cerbo-S GX that leaves out some of the unused functionality for a lower price. We should have some of them coming in by the end of the week.
You are officially my hero!
You’ve proven that the Multiplus II 120x2 supports Zero Export to CT capability on L1 through Victron’s ESS functionality and settings.
And I understand that enabling ESS functionality requires a Cerbo GX.
Since the Schneider XW Pro and the Solark both only support Zero Export to CT capability when powered by a 24V battery, I believe Victron’s offering which you have demonstrated is the only Zero Export to CT capability that can be supported by a 24V battery (and possibly even a 12V battery).
My quest may finally be coming to an end!
Thanks again for going to the trouble to make this fantastic video.
sunshine_eggo
Happy Breffast!
Does this require a MP-II 120x2 or could a standard MP-II be installed on only one leg? It really seems to me the x2 functionality is not needed at all.
HighTechLab
AKA Dexter - CTO of Current Connected, LLC
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This would work with a standard 120v. There was confusion if the 2x120 also would handle it, but a single one would be a more budget friendly choice if you never plan to use the second relay.
Yes it does require a Cerbo GX / Venus GX, but Victron just came out with the Cerbo-S GX which is a "lite" version that omits some of the excess ports and has a better price point. I should make clear, you also need the MK3 so that you can program the inverter with the appropriate assistants from your computer.
Yes, the demo was done with 12v batteries, but the 24v inverter functions identically.
It's what I'm here for
I'm not sure because they aren't really available in the USA yet. Good topic for another thread.
sunshine_eggo
Happy Breffast!
Or use a remote VRM download to revise with VEConfig on a PC and update with VRM. I've tweaked my hardware dozens of times from 3.5 hours away with that method.
Another quick question for you:This would work with a standard 120v. There was confusion if the 2x120 also would handle it, but a single one would be a more budget friendly choice if you never plan to use the second relay.
Yes it does require a Cerbo GX / Venus GX, but Victron just came out with the Cerbo-S GX which is a "lite" version that omits some of the excess ports and has a better price point. I should make clear, you also need the MK3 so that you can program the inverter with the appropriate assistants from your computer.
Yes, the demo was done with 12v batteries, but the 24v inverter functions identically.
It's what I'm here for
I'm not sure because they aren't really available in the USA yet. Good topic for another thread.
So with a pair of Multiplus II 120x2s (or one 120x2 and one 120), you can have split-phase 240V power when grid-tied with Zero Export to External CT Sensor on both legs and when the grid goes down you can have one of the Multiplus II 120x2s provide 120VAC backup power to 120VAC loads on both legs of Critical Loads Subpanel (limited to a total of 3kW).
My question is whether Victron supports any synchronization capability between two Multiplus II 120x2s so that a pair of them can provide full split-phase backup power capability including the ability to power 240VAC loads off-grid with a maximum of 3kW to each leg (6kW of backup power total)?
I found this showing that 2 Multiplus 120V inverters can support 240/120VAC backup power: https://community.victronenergy.com/questions/35012/2-x-multiplus-split-phase-setup-with-ess.html
I’m interested to know whether 2 Multiplus II 120x2s (or two Multiplus II 120s) can be synchronized to deliver full 240/120VAC backup power in the same manner…
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HighTechLab
AKA Dexter - CTO of Current Connected, LLC
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yes. This is simple.
No, only identical units can be stacked.
There is no advantage of using a 2x120 vs a 1x120 if your plan is to stack for 240v. L2 would never be used on either inverter. L1 would go through inverter 1, l2 would go through inverter 2
sunshine_eggo
Happy Breffast!
I'm going to chime in again. The x2 is just absolutely unnecessary for this application. Another option would be a Victron EU unit @ 240V/60Hz paired with an autotransformer. When @the_colorist still posted here, he routinely installed that configuration for North American split phase.
IMHO, the x2 only has application in RVs for facilitating 30A vs 50A shore power.
IMHO, the x2 only has application in RVs for facilitating 30A vs 50A shore power.
Clear. Thanks.
I asked primarily from the perspective f future-proofing. If I’m only going to start with a single Multiplus II but may want to upgrade to full split-phase sometime in the future, it sounds as though the only difference between one and later two 120x2s versus one and later two 120x1s is limited to the capability of a Critical Loads panel with only a single Multiplus II.
With a single Multiplus II 120x1, a Critical Loads Subpanel is limited to 120VAC loads which are all on a single load (100% imbalance of Critical Loads when on-grid).
With a single Multiplus II 120x2, a Critical Loads Subpanel can include 240VAC loads which will only be powered when on-grid and can also contain balanced loads on both L1 and L2 (when on-grid).
My Critical Loads Subpanel is only going to have a few 120VAC loads - fridges and lights, probably a few outlets.
Since I don’t have any 240VAC loads I need to move to my Critical Loads Subpanel, I have to agree that a single Multiplus II 120x2 offers no benefit over a single Multiplus II 120x1 for my use-case.
I can put the savings towards partial-coverage if the cost of a Cerbo
.Is there any difference in approvals or certifications between the 120x2 and the 120x1 as far as residential install?
I see you beat me to the punch -I just came to the same conclusion.
For those seeking 240/120 split-phase backup capability, perhaps. But that is not my use-case. I’m only interested in single-leg consumption offset and single-leg backup power for critical loads.
But I want to understand I have a clear upgrade path should I ever decide I need either consumption offset if both legs and/or backup power for 240VAC Critical Loads.
Adding a second Multiplus II 120x1 would give me both.
If I don’t need more power, don’t need to offset loads on the other leg, but do need to support 240VAC Critical Loads, I could add an Autotransformer to form 240VAC from L1-only on the Critical Loads panel, but that’s highly unlikely to ever be something I feel the need for.
What ever happened to the_colorist?
As I come to more fully-understand the capability of the Multiplus II 120x1, I’m coming to agree with that perspective.
If all loads are connected to the AC output (as in an RV), and you want to power 240VAC loads but only on shore power, the Multiplus II 120x2 is attractive.
The same might be true for a residential install where the hybrid inverter is positioned between the grid and the main load panel (but unlikely because of the Multiplus IIs limited power output).
But for residential installs where offset of loads on the AC input side of the hybrid is a high priority and a small number of Critical Loads on the AC output will be limited to 120VAC, the 120x1 will do everything the 120x2 can (and for less).
sunshine_eggo
Happy Breffast!
Are ANY of the models we've been discussing UL1741 listed? I don't think so. Several are UL458 for RV/Marine, but that won't help with residential.
The original MP 24/3K is UL1741
sunshine_eggo
Happy Breffast!
Agreed.
Wish I knew. He was an absolute firehose of knowledge. He might have been caught up in the "vendor" policy Will enacted.
Nice. Love it when something transitions from "I think so" to "I know so."
Assuming this is correct, what does that mean as far as permitted residential installs based on Multiplus II?
cs1234
Solar Wizard
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That it isn't happening in any place that requires UL listing. Victron needs to step up their game in regards to UL 1741 listing.
sunshine_eggo
Happy Breffast!
It means that your AHJ must accept something besides UL listed equipment. You would need to write up the plans indicating the lack of UL listing and provide other justification for its use and get them approved.
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