Speccing out a home battery storage system using a multiplus II 48/5000 230v. Looking at the maximum AC in - this is rated at 50amps (11500va), so could be run in 10mm2 cabling, however if I've understood correctly the AC out side with powerassist could potentially deliver the grid feed in of 11500va plus a further 5000va from the inverter. So at 16500va (or 16.5kW) you would need 16mm2 cabling to feed back to the load side (consumer unit) - using online cable size calculator. Looking at the spec sheet the inverter only has 13mm2 terminals? So here in the UK, it's either 10mm or 16mm. 10mm is under-specced and 16mm won't fit in the inverters terminals. What am I missing?
Can two Multiplus II 2x120v units be put in split phase configuration? The manual only describes using in parallel or three phase. I'm thinking of using just the L1 output from each inverter, similar to how the diagram shows for three phase operation. Any reason this wouldn't work?
Hello, I hope you are well. I am Rahmouni Ayoub a PhD student engineer and I work on microgrid systems. One of our objectives is to realize a laboratory prototype that will contain a photovoltaic emulator that will produce a power of 3kWp connected to the AC bus via a photovoltaic inverter brand "Fronius", a group of batteries with an inverter charger "Victron energy" and other backup sources. According to the rule of the factor 1.0, the inverter charger must have a minimum power of 3kW because our photovoltaic source is 3kWp. but in our case since we use a photovoltaic emulator and even the load is a programmable load so we can simulate our day in some minutes. For this we don't need a battery capacity equal to the one used in a real model (that is to say we need a capacity of about 100ah maximum for our prototype). So my question is, is there a problem if I use a low capacity compared to the one used in real conditions with a 3kW inverter charger? (the capacity in real conditions is about 400Ah/24V).
Thank you very much!
I have a Multiplus II GX system which is installed with the ESS application. It's connected to the UK grid via a single phase 100A supply, connected to AC IN of the Multiplus.
All loads and an AC coupled solar inverter are also connected to AC IN of the Multiplus.
The Multiplus is able to balance the grid supply close to zero, charging the batteries off of solar and discharging them as required. I also have time of use tariff which enables the Multiplus to charge the batteries over night.
The issue I have is that I run a lot of loads over night in the cheap period of my tariff including a 32A electric car charger. This regularly take my load over 50A.
The Multiplus needlessly regulates its own charger down in this period and on occasion supplements my grid supply from batteries. This is needless and results in me not having a full battery bank at the end of the cheap time-of-use period.
I can't increase the current limit beyond 50A on the Multiplus or seem to disable it. It is not needed in a parallel grid connection as I have it, as far as I can see.
Can somebody advise me as to whether I have missed a setting or if this is something Victron need to consider in a future firmware update. I want to be able to heat my water, charge my car, batter bank, run my dish and clothes washers during my off peak period!
Hallo liebe Gemeinde,
ich habe einen neuen Multiplus 12/3000 gekauft. Alles funktioniert normal, aber wenn ich meine kleine Bauchheizdecke oder die Frostschutztauchsieder im Wassertank einschalte, fängt das Gerät an zu Brummen (Netzbrummen). Die betreffenden Geräte liegen auf verschiedenen Sicherungen. Auch beim Nackenmassagestab brummt der Victron.
Mein Nachbar hat den kleineren Victron verbaut, der brummt genauso.
Die Geräte sind aber in Ordnung.
Kann mir jemand weiterhelfen?
I have a multiplus 3000/230v and I do not manage to get any voltage on the AC Out 2 when connected to the grid.
Is there any magic to get this to work??
This control above the "Display off time" on the "Display & language" settings was present in previous version but no longer available. This seems like a bug. Will this be addressed in the next release?
Hello! I have a Viktron system in which there is a 10 kW color control quattro inverter and a lithium battery (from another manufacturer). In the viktron connect settings (settings/general/enable battery monitoring) Can I adjust the percentage of battery charge and temperature without using the BMV-700 device?
I have 4 panels each 275W. The Voc of one panel is 38,8V and Inc is 9,17A. All panels are identical. I have connected the panels so that two panel are connected in series and then these two two panels group is connected in parallel. Then I have a solar panel group with Voc 77,6V and Isc 18,3A. The total power of the system is 1420W. From that system I can get in to my battery bank of 12V a current of 118A. Is it so that I can get only 85A because of my existing 150/85 solar charger? The 33 A is not allowed to let in the battery bank from the solar charger? If I will get all the current that is possible from my panel system of 1420W I have to buy another solar charge controller and connect that with two panels of 275W connected in series and connecting the other two panels connected in series with my existing MPPT 150/85 charge controller. The solar chargers right size would then be 60A? The maximum current that is available from two panels of 275W into my battery bank of 12V would be 59,2A. A little bit cheaper would be a MPPT solar charger with maximum current of 50A? If I now have two solar chargers both connected with two panels is that system operating correctly so that both chargers are charging correct the battery bank? The connection with the battery bank and both solar chargers I will dot with my Victron LYNX IN busbar.
I installed my multiplus 3000 over 2 years ago and has worked perfectly.
a few days ago the inverter switched to OFF on its own then restarted and back to ON.
it was only off for about 30 seconds to a minute.
We are connected to shore power on a 30 amp connection and i have the input set to 26amps
Last night it happened again at 4am, it turned OFF then ON again 6 times over a 40 minute period.
I downloaded the info from the VRM and it shows the VEBUS switching to OFF.
At the time of the shut down we had no excessive loads, only about 900 watts from the refigerator.
I turned the fridge to propane, which brought the load down to about 300 watts.
the inverter shut down again
We have a southwire surge guard 50amp surge protector built in, it had no alerts or alarms while on shore power.
Looking at the data, in shore power was consistently 122 v and 60 hz
I cut off the shore power to see what would happen on inverter/battery power alone.
the system worked perfectly and no shutdowns while on inverter alone.
Looking at the VRM data several of the chart have weird spikes and valleys
Please look at the vrm data below, I have no idea why this is happening
|Victron Multiplus 3000 12 Volt Inverter|
|Battleborn Lithium 100ah 12 volt batteries x 4|
|50 Amp Connection to RV Panel|
|AM Solar - Smart Phase Selector to allow feed to both sides of 50 amp|
|Victron Color Control GX Display|
|Victron Smart Solar Charge Controller MPPT 150/100 - TR|
|BVM 712 Smart Battery Monitor|
|New Powa 200-24V||200||34||40.46||5.88||6.23|
|AM Solar Rocker Mounts|
|AM Solar C-Box and Heyco liquid tight strail relief for 10/2 round cable|
|Solar Panel Cable|
|10 gauge duplex round cable with UV resistant jacket|
|Combiner Box to Charge controller cable|
|2 gauge duplex 2/2 cable|
|4/0 Red and Black Welding Cable with 4/0 - 3/8th lugs|
|400 Amp Fuse between battery and invetrter and 12v loads|
VE configure settings
VRM screens last 6 hours
See all the activity from 3:42 to when i cut off the shore power at 4:09
[image]This spreadsheet from the VRM download shows the inverter going off 6 times from 3:45 to 4:05
The inverter has been running perfectly off of inverter/batttery since i shut off shore power
Please help with any reasons why this would happen
Hi all, I would like to use a multiplus 2 as a charger (without PV). I would like to charge the battery from the grid (AC-in). When the battery is full, it should supply all connected AC loads up to a SoC e.g. 20 percent. The battery should then be charged again via AC-in. Can I achieve this with ESS or do I need additional logic (e.g. Node-Red or similar)?
i have a mppt 75/15 smart solar charge controller.
can i use it for charging two batteries at the same time or it works only for one?
how should i connect them to do so?
what are pros and cons?
in case i can't i have to buy another mppt and connect it to the battery, but then how can i switch the PV energy for the two mppt controller?
Is there an (easy) way to receive data from the Remote Console (not VRM) e.g. via a HTTP GET request (SSL). I am using Venus OS.
I need it for a local ESP32 data logger which saves the grid data (Pmin, Pmax, P) every 10 seconds. To dedect consumer analysis (peaks).
Or does anyone know a good local data logger (SD-Card) extension for the Raspi?
I assume that the remote console is only a web server or? If not is there a call/protocol description?
Hello peolple, in the victron manuals, it specifies that the installation must be done with flexible multifilament cable.
Each of the filaments must have a diameter less than 0.4 mm (0.016 inches) or a section less than 0.125 mm² (AWG26).
For example, a 25 mm² cable must have at least 196 strands (class 5 strand or higher according to VDE 0295, IEC 60228 and BS6360 standards). An AWG2 gauge wire should have at least a 259/26 strand (259 strands of AWG26). Example of a suitable cable: triple-approved class 5 cable (complies with three standards: the American (UL), the Canadian (CSA) and the British (BS)).
Where can I find this type of cable? In all the places I have asked, they do not know what type of cable it is (and I have asked in all kinds of places...reference electrical stores...on multiple internet pages. ..etc)
Hello from Canary Islands,
I have already asked this question in another thread, but I think I'd better start a new question.
Victron MultiPlus 48/5000/70-100, Product ID 2624, Firmware v498, off grid
Victron SmartSolar Charger MPPT 250/100, Product ID A050, Firmware v1.61
Lithium battery YUASA 2x15 cells, 120 AH
REC 1Q-BMS on CAN Bus
Victron Venus GX
MyPV AcThor 3 kW single phase wiht a heating cartridge 2500 W, frequency control.
This is the MultiPlus frequency control setting:
But it didn't work the way I hoped.
I want the frequency to increase in case of PV surplus. This would be the moment when the Solar Charger decreases the charging power.
But the frequency only increases when the maximum battery voltage is reached (my BMS is set to 60.02 volts). However, the control behaviour is such that the battery voltage drops to 59.79 volts in float and remains there. That's why the MultiPlus regulates the frequency down again immediately. So I only have a few minutes in which the AcThor could work. How can I ensure that the frequency remains at 51 Hz as long as I have a surplus?
Thanks for your support!