dc system Image

dc system

Multiplus 2 48/5000 120v split phase, DC source output

Do I understand correctly that if I am running 2 Multiplus 2 48/5000 120v units in split phase configuration and they are connected to my DC battery bank that when in inverter mode I will be able to get a 120/240 split phase output?

Stormy R. asked
Ed Jones answered ·

1 Answer

DC-Load Tile not showing up

Hello dear Victron Community!

I have an ESS system with 1x Multiplus2 5kVA, CerboGX, 8.8 kWp solar, 2x MPPTs (250/100, 250/85), 3-phase meter EM24, PylonTech battery (48V, 14.4 kWh) and zero injection.

So far everything is up to date with the latest firmware and everything works perfectly. The CerboGX currently works with the release-candidate v2.80~33.

Now to my problem: I have in addition to the battery a large DC consumer (between 1-3kW), but only occasionally switched on or clocked.

But the tile "DC-Load" is not shown to me neither on the VRM page nor in the remote console, although the DC power draw is known to the ESS system (battery is connected via CAN).

Every now and then the "DC Load" tile appears, e.g. after a restart of the CerboGX, but then disappears again after a few seconds.

The function "DC System present" is switched on.

After research in the forum I found the entry "DC load on CCGX not indicating load" by riclip and realized that probably a SmartShunt is required.

I bought and installed a SmartShunt 500, reconfigured it as a DC meter and connected it to the CerboGX via VEdirect. Even now there is still no "DC Load" tile to be seen!

My portal ID: d4124333c7a6

Any ideas?

Ralf asked
tuxedo0801 commented ·

5 Answers

Multiplus voltage variation

Hi all.

I have a Multiplus 3kW that charges my LiFEPO4 batteries on my boat. I have a Smartshunt that measures load from the batteries alone and a Smartsense connected to the battery. I noticed recently when charging from shore-power, on the main DC distribution panel, the voltage keeps going up and down from 13.6v to 14.4v every few seconds. Yet the voltage on the BMS, Smartshunt and BMS shows a consistent 13.7v. What could be happening here? There are very few loads drawing from the main DC panel at the moment.

lawrence-craig asked
mvas edited ·

2 Answers

Avis technique partie DC consuel

Bonjour à vous,
J'ai une installation sur 3 pans de toitures.
Garage 6 PV 400w Mppt 150/45
Garage 3 PV 400w Mppt 150/35
Maison 4 PV 400w Mppt 150/35
2 Multiplus 48/3000
1 pylontech us 3000c

J'aurais voulue tout centralisé le DC et l'AC dans une armoire industriel 200cm*80cm l'installation sera dans mon garage. L'armoire sert à tempérer l'installation en hiver, et protégé de la poussière.
J'ai un doute pour passer le consuel en France pour la SC144C-4.

Les organes de coupure seront à l'intérieur de cette armoire.

Ma première inquiétude est si une intervention de coupure doit être réalisé, tout le matériel n'a pas de plastron, je pense IP2X donc il y a un risque de contact avec le DC et l'AC.

Si cela pose problème:

Soit j'installe un autre coffret DC classique a l'interieur y compris pour le AC mais il seront "caché" car il faut ouvrir la porte d'armoire pour les voir...

Soit mette les 3 sectionneurs + para dans un coffret DC clasique a l'exterieur, et un sectionneur général sur la sortie AC des onduleur sur la facade de la grosse armoire ?

Soit 3 sectionneurs DC + un AC tous sur la façade de la grosse armoire ?

Auriez-vous des recommandations ?

Merci Etienne

etienne21 asked
etienne21 answered ·

2 Answers

Feature request: DC from PV via battery to car-charging ( CCS Wallbox )


auf der ESS-Kompaktschulung am 30.03.2023 in Fulda sprachen wir über mögliche kommende Speichersysteme mit 800V. Das schöne an den MPPT-Trackern ist ja, dass sie rein DC-seitig sehr verlustarm arbeiten. Wenn ein solches Akkusystem kommen sollte, dann ist klar dass auch die MPPT-Tracker werden höhere Spannungen als die heutigen 48V werden verarbeiten müssen.

Dieser Wert von 800V lässt sofort an die Diskussion im Automotive Bereich denken:


Da liegt es nahe, dieses Konzept auf eine CCS-Wallbox zu übertragen. Also warum nicht mit bis zu 1500V vom Dach runter, dann mit 800V in den Akku und wieder mit 400-800V ins Auto? Alles rein DC-seitig, versteht sich.

Und kaum sprechen wir auf dieser Schulung darüber, da kommt mir ein Link unter wonach die Konkurrenz genau das anbietet, in einem Guss aus einem Gerät:



Das Tolle an Victron ist jedoch gerade die Modularität. Also meine Frage: Plant Victron eine DC-Wallbox mit CCS?

fonsel asked

0 Answers

Has DC System - Incorrect Consumption in VRM when Phoenix Inverter is run on DC

Hey everyone,

I am running an off-grid system with a GX Device and an MPPT, BMV and Phoenix Inverter 12/800. I also have DC loads connected to the system. As long as the inverter is not running, the consumption values in VRM are perfectly valid, but as the inverter runs, the values measured are off, as the inverter power is just added ON TOP of the DC Load Power which already includes all the current drawn by the inverter.

Is there a way to configure the GX Device to ignore the AC Power measurements, as they are already included in the DC Load? If not: it'd be great to have an option in the menu that states that the inverter is run on the DC system. Otherwise I am unable to reliably log the system consumption...



steffend asked
JohnC commented ·

5 Answers

Lynx Distributor Usages Clarifications

Hi All, my first time with Victron products and Solar Energy. Questions about Lynx Distributor. Considering that has 4 slots fused.

1) May I connect the whole system in One Lynx Distributor Unit?.
Slot 1: Multiplus-II 48/3000 (Fused)
Slot 2: SmartSolar MPPT 250/100 (Fused)
Slot 3: Lithium 48V Pylontech US3000 (Fused) (3 parallel modules connected with cable kit 120A/2000mm lenght)
Slot 4: Venus GX (Unfused as brings its own in-line Fuse)

2) Fuses sizing should be MEGA 125A for all 3 Slots? (i.e. Littlefuse MEGA 125A/58V for 48V)

3) Is there a minimum lenght for Cables of Slot 1 and Slot 2, I have available AWG2 35mm2 nominal cable (33,6mm2 actual section). For Slot 3 cable kit size came Pre-Fabricated.

Please if you see any safety issue advice, this is an Off-Grid system. 3000W Panels Array (4series x 2 strings). (SmarSolar is oversized for future expansion duplicating whole system)

Thank you,


sanchuka asked
ponzoa commented ·

2 Answers

Orion DC DC Charger - when will it be networkable?

Hi All, I have a camper that runs solar on the roof, and via a Smart DC DC Orion 24/24 - 17 charger in my truck camper. Currently these are not networked as I am driving along which does cause them to sometimes be in different charging states.

Posts on here have asked the question but have not been updated recently - when will the Orion DC DC chargers join the Victron Networked family?

I am very keen to have all devices working on the same charging algorithm. Is there a workaround with the Victron Dongle?

Does anyone know when these will be networkable?



trollan asked
onigino answered ·

2 Answers

Using Smart Shunt as DC Load meter - VRM is not mapping correctly


I have setup a Smart Shunt as a DC Load meter in my RV setup. I basically want the Smart Shunt to report the current being used by the DC loads in the RV so that the MPPTs can compensate for it when they are charging the batteries. However, it doesn't seem to be working/reporting correctly. For instance, when I turn on DC loads (lights in this case), the amperage is reported in VRM as going to the general system, not DC loads (note in last picture that the DC meter reads 0.0 amps being used but 22-28w seem to be outflowing constantly). Is VRM working correctly?

Some details:

* Smart Shunt is configured as DC Meter (currently specified as General Loads in misc. settings)

* I'm using DVCC - SVS, SCS enabled.

* I have no way of tracking current in AC loads/sources in the VRM system - I'm looking to add at least another Smart Shunt on my inverter if I can get this working correctly.

* I have the "Has DC System" setting enabled in my GX unit (a Raspberry Pi running VenusOS Large in my case).

* I can see the DC System in the main VRM screen.

System configuration:





bradley-thompson asked
bradley-thompson answered ·

2 Answers

using MPPT solar inverter DC input with an AC generator


I have a question regarding the possibility of using an AC generator with an MPPT solar inverter.

So basically I have a wind power turbine, the generator is a 3 phases permanent magnet synchrone generator.

In order to have a DC voltage, I will use a diode bridge with a DC/DC converter to meet the requirement of DC input of the inverter.

Lets say I will use the Victron EasySolar-II GX (who handle a DC input between 38V - 66V) without battery, and I'm able with the diode bridge and the DC/DC converter to convert the voltage of the AC generator to a DC voltage that oscillate between 38V - 66V. Will the inverter be able to generate power and behave normally ?

I want to know too how the MPPT will work under those circumstances. Feel free to correct me if I'm mistaken, from what I understood, the MPPT algorithme changes the value of the voltage on the DC input in order to find and drag maximum power. In the system that I explained above, the source imposes the voltage I believe, how the MPPT algorithm will be able to find the maximum power point?

Feel free to ask more questions if I misexplain something.

Thanks in advance


cydrox asked
bje answered ·

2 Answers

DC System not in VRM Dashboard?

Hi my DC system is not showing up in the VRM Dashboard.


Under Advanced view, I can see the DC load?


mryoshii asked
brewgyver commented ·

3 Answers

When BMS Switch DC off and grid is available, why Multiplus Switch off the Full House (AC)?

I still cannot understand, why Victron switch off the AC Output, if the Batterie has problem, but still the Grid is available?
My full house is connected to an 3-Phase system and the full house run over the 3 Multiplus. If the DC Bus has some Problem, the full House will switch off because of the Voltage Ripple or Voltage minimum. This can happen at the beginning of an system to see how it works with the batteries!

So maybe BMS will switch off the DC Voltage!
BUT if there is an AC Input available, why the Multiplus cannot switch to the AC-Mode and just switch to the passthrough mode?

So house is off in this situation and grid is available make no sense for me!

Thank you!

Best regards

kevstone122 asked
olegv commented ·

4 Answers

Multi RS Solar - VRM Power Reporting Inaccurate

Hi All,

Just wondering if anyone else is seeing the same behaviour in VRM from their Multi RS?

It seems that whenever the Multi RS is charging the battery, from Solar or Mains or both, the charging power is being reported by both the Solar or Mains charger to VRM, but is also being shown as additional DC charging power, pressumably from the battery?

The figure seems to be consitently double the actual charging power, like VRM does not know how to subtract the power coming from the different elements of the Multi RS from the total power going to the battery, so is accounting for both as 'additional' DC charging power as well as individually.

System in question has a fairly large DC system so it is as important to account for that as the AC system, removing the DC system from VRM is not really practical.

Up to now the system had been getting limited Solar or AC charging because UK solar sucks in winter and Generator support has only recently been added, so I had been putting the discrepancy down to measurement tollerances to now.

Now @WKirby has helped out with the generator settings for the Multi RS, i am pretty certain that this must be some kind of reporting bug, interested if you have seen this with your system?

Batteries are Pylontech US5000 which are selected as the battery monitor, as they are pylons DVCC is automatically forced on with SVS & STS forced off, not really sure what else to try to get the reporting to be vaguely accurate, any suggestions welcome


alternativepowerprojects asked
nesswill commented ·

4 Answers

DC System add on

Hi, I have a grid tied system with an 8kw Quatro and a 5kW SMA. The SMA is running at it's max with PV. I also have 40kW of lithium storage. I need 10kW more solar power and would like to add this via panels and charge controller.

1. Is there any limit to consider when adding a DC system vie panels and charge controller to the victron?

2. Where can I find information on the Victron site on how to configure such setup once installed?

jan-landsberg asked
jan-landsberg answered ·

2 Answers

DC-DC Converter/charger

For our caravan I am looking to upgrade/optimise the 12V system.

At the moment there is a 90Ah 12V lead-acid battery which when we are off-grid runs the lights and 12V outlet to charge phones/tablets.

When plugged in the battery is charged from the mains 230V supply using a Reich C-Go 20A charger. This charger in turn, also acts as an isolator for the 12V coming from the car. So when the caravan is plugged in the car and the engine is running the caravan battery is also charged from the car.

I want to replace the lead-acid battery for a LiFePO4 battery but I need to limit the current to protect the car and wiring between the car battery and the caravan. Ideally I want to limit the current from the car to 10A because of the small gauge wires that re typically used in cars and caravans in Europe.

My first idea was to take a Victron Orion smart DC-DC converter which basically does everything I want except two things. The most important thing is that there is no way to limit the current. The smallest version is 18A DC which is to much for my application. The second disappointment is that it doesn't have VE smart networking. Victron sadly never gives out information on when or even if devices get an update.

The Victron 25A Buck-Boost converter does have the current limiting function that I seek but it is more than twice the price of the Orion. It also lacks VE smart networking and you need to use an ancient Windows application to change the settings.

What would be a good and cost effective solution to my wishes? I don't mind spending money but I don't want to overpay for equipment that is half finished.

I would really like to see that Victron takes one of their smart solar MPPT chargers and create a truly smart DC-DC converter from it. I looked into using a MPPT charger for my application but I quickly learned that it is a bad idea because of how the MPPT system works.

remcomeeder asked
rvicev edited ·

3 Answers


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