MultiPlus Quattro Inverter Charger

Hallo. I have a victron quattro 24/8000 with a victron cerbo gx connecete to the system. is it possible to program one of the relays to pull ON when switching to generator (AC1) and stay on? i can not find an option in VE. Config 3. That would be a good thing in the Marine world.

Hello,

as the Multiplus-II does not accept generators if configured for the german grid we need to use Victron Quattros-II 48/5000/70-50-50 QUA482504010. They can be bought in Germany but seem to lack certifications for the german grid.

When will the certifications for the german grid be available?

It would be sad if we have to switch to another manufacturer than Victron because of the lack of generator-support/certifications.

Thanx for any hint! :-)

Hi Folks... This is going to raise a few eyebrows I expect but none the less...

I have two Multi's 5000/48/70-100 and 5000/24/70-100.

They are connected in series, as in, the output of the 48 feeds the input of the 24. I have done this to take advantage of the assist feature, giving me more overall output whilst retaining the ability to use either system independently, external manual changeover switch, in the event that either system has an issue or needs to be switched off for maintenance/modification.

My solar is DC coupled to the 48 system and managed by the BYD battery ( Standard config :-) )

We are completely off grid so my system needs to be as fault tolerant as possible.

The configuration works well, AC input limit on the 24 protects 48 and can be used to determine which battery is actually supplying my loads, assuming that the load is les than 4kW at the time and I anticipate using charge current limit, dynamically, on the 24 to determine the balance of available charge current between the batteries.

However...
I discovered that I cant directly connect both Multi's to the same VE.Bus as they immediately try to go parallel which isn't the goal and as far as I know would not work anyway.
I have connected the 24 to my CCGX via an MK3, which seems to work locally and within VRM.I
(I cant access the registers on the 24 via Modbus but that is a different question.)

I need to control the charge current limit and am aware that there is an assistant which I think will allow me to do so with an analogue input or potentially 1 or more digital in's

I am also aware that ESS is replacing this kind of functionality and was wondering if treating the 48 as a grid and running ESS on the 24 is possible and if it is weather it would be a better, more integrated, approach.

Questions In summery...

1) What options do I have for managing charge current limit remotely/externally?

2) Is ESS an option?

3) Is it possible to handle the second Multi, 24, as an AC coupled charger for the first Multi, 48, like AC solar?
In an ideal scenario it would be good to be able to cross feed energy in either direction and manage where available charge is going, as a system.

4) Is there a GX variant that will allow both Multis to be directly connected, so I have full access to parameters and remote config, whilst keeping the two systems from trying to parallel up?

Sorry this is a bit long, I wanted to provide an accurate context.

Cheers,
Al

Any news on larger Quattro-II models? I noticed Multiplus-II is available in 3, 5, 8, 10kVA, but the 48v Quattro-II in just 5kVA.

I want to Connect an external Switch to my multiplus I 3000 . In the Manual it says this is possible through H terminal, leaving the outside Switch on multiplus in on position. Connect left and Middle for "on" Connect right and Middle for "charge only". What connection should be made for off, it doesn't say this in manual.

I have a Multiplus 3000/35/16 inverter connected to a cerbo GX. I had not connected the temperature sensor and recently when i tried to connect this to the temperature terminal block on the inverter i immediately got an overload + low voltage blinking LED status on the inverter. Curiously as well the inverter output voltage shot to around 270V. When i disconnect the sensor everything goes back to normal. Any one experienced this and any solutions for this?

We have installed two independant Quattros connected to a CerboGX. One through VE Bus and the other through MK3 to USB adapter.

Both Quattro units have Shore power on AC Input 2. One has a generator connected to AC input 1. AC input 1 (generator) is set to 40 amps and "Controlled by remote" is disabled. AC input 2 (Shore power) is set to 32 amps and "Controlled by Remote" is enabled.

On VRM on remote console I can see "Input Current Limit" is 40 Amp. It cannot be adjustable. I cannot see the 32 amp input current parameter.

On the Garmin MFD I can see Input Current Limit is 32 amps. Not yet sure if it can be adjusted but will know tomorrow afternoon. I hope so.

It appears the CerboGX is displaying the wrong input. It appears to be displaying the input disabled from adjustment rather than the input which is enabled for adjutment.

Has anyone else seen this? Cerbo Firmware V2.75. Is this a software anomoly or have I somehow misunderstood how this works.

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Hello everybody,

in the past few months I've been designing the off-grid system for my farm, with the help of an electrician. I already bought (almost) all the components and I'm installing it right now.

Now, I find myself stuck with the grounding of the system, because I'm not quite sure how I should wire the whole system so that it's as safe as it should be.

As a side note, consider the following:

• I know that it is advised to ask this kind of questions to a qualified electrician who knows the local regulations, but believe me, where I live (rural Panama) it's actually pretty hard to find one, let alone someone with experience with Victron products. In fact, I had to buy 80% of my components from the US because nobody sells them here. (for example it was literally impossible to find flexible wires, I had to buy them on Amazon. Same for 4/0 copper wire lugs and the tool to install them)
• regarding local regulations, forget about it, there are no specific regulations and nobody checks whether what I'm doing is good or not. The person in charge in this town does not know anything about off-grid systems, and is in fact waiting for me to complete my system so that he can see how it works

I had some help from en electrician online, and of course I studied all what I could find online, but there are some things that I'm not sure about, so maybe you can help me out.

Please find attached the diagram of the system (It's a work in progress).

Electrical Drawing with 1x BYD LVL.pdf

I believe that the grounding wiring needs to be fixed, because:

• 6 AWG for grounding the inverter is too small of a wire, because from reading Wiring Unlimited I think the wire should be tick enough to be able the carry the full current, which in my case is 250 amps, so the wire should be 4/0 AWG
• it's not clear what happens between chassis grounding and AC grounding. Is it a floating system? Do I need one RDC before the AC distribution? Does the PV part of the system have a dedicated ground rod for lightning protection?

This is where I'm stuck.

From my understanding, I think the grounding should be fixed as follows:

• the metal frames of the PV panels should be grounded with a ground rod
• the ground output of the PV combiner box should be connected to the same ground rod
• all the chassis of the components (the two inverters and the charge controller) should be connected in parallel with tick wire, and then connected to the central ground terminal of the Lynx Distributor
• from there, I should run a 4/0 AWG wire to a ground busbar (not shown in the diagram), where I should also connect the grounding wire for the AC distribution panel
• this ground busbar is connected to another dedicated ground rod
• there should be a RDC breaker between the inverters and the AC distribution panel.

Well, there's that, not sure what I'm missing, but I'm sure that something is missing in my understanding of the whole grounding deal.

I appreciate any help!

Edit: I added a screenshot of the diagram.

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Hello,

I have a Multi 48/5000 and a very cheap but good working 2.5KW gasoline generator connected to AC IN.

At final installation tests, I found out that the Residual Current Device does not work, when the generator is running and supplying power, even though I connected a good earth to the generator.

It seems, the generator is not capable of a RCD.

Is it OK to hard wire PE and Neutral on the Multi? Or what is common practice?

Thank you.

Markus

Hallo zusammen,

ich habe in meinem Camper einen Multiplus verbaut, ich habe hier eine "Absorbsion Voltage" von 14,2 V eingestellt. Leider geht beim Laden die Spannung aber hoch bis auf 14,6 V (Dann schaltet das BMS des LiFePo Akkus ab!). Habt ihr nen Tipp für mich, woran das liegen könnte?

Grüße,

Tim

I am going to be changing my battery bank and was looking for any videos that could help me set it up. I am going from lithium ion to lifepo4 battery bank. Here is my system and the batteries I will be adding.

My Invertor - Quattro 5000 Watt 48 volt
solar charger: MPPT 150/60
Battery bank - 3 - Simpliphi PHI 3.8 kWh LFP Battery, 48V Part Number PHI-3.8-48-60-M

Thanks,

EJ

I had a Victron Energy user call our shop today saying he has a stripped screw on one of the AC input terminals on his Multi. The screw begins to tighten and then loosens up like the threads on the screw was stripped. This is not a warranty repair request. He's the second owner of the Multi and it's likely he or the original owner over-torqued the screw.

Does anyone have a part number for a replacement terminal block or an alternative idea for how this can be repaired?

TIA

1. Dear community,

Today i installed a system for a costumer.

Ac input 1 grid 6A

Ac input 2 gen 45A fixed

When the system does start up i see the 6A and i can limit that.

But when the generator runs for a short periode i can see only the 45A that i cannot adjust.

The costumer now cannot adjust the shore power current limiter?

I alreay tried to change ac in 1 and 2.

Is it possible to get the current limiter display fixed on input 1 or 2?
So the costumer can always adjust the shorepower current limiter?

I tried lots of things but could not get it working properly.

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With kind regards,

Marc van der Heide

Hi Everyone.

I recently installed a Phoenix 12v 800W inverter.
It runs off a 200ah Gel Battery that is charged by 2 x 370w Solar Panels.
We usually only use the inverter during day time to power two x 250W fridges.

Since day one off using this setup, it’s been making a SHORT vibrating/grumbling/buzzing noise when one of the fridges kick on, and then it goes away

Is this noise normal?

Will it cause damage to anything in the long run?

Please will you please share your thoughts on this if you have any.

Thanks so much.
Jacques.