offgrid

Hi there,

We have an install where the customers' lights are flickering when loads turn on/off as well as being noticeably dimmer when large loads are running. The system is a Victron Multiplus 5kVA with SmartSolar 250V/85A and 400Ah of Carbon Lead batteries.

I have had Fronius AC-Coupled systems with light issues, but never DC-coupled. There are LED, fluoro and incandescent lights in different parts of the house and all react similarly; anyone knows what could be causing this?

kind regards

Dean

I have a Quattro 10Kw in a off grid config using Lithium batteries. Can you please advise the best settings for the Quattro. Do i need to install assistants.

Hello,

I set up an off-grid system with two 12V series batteries, I also have a BP-65 battery protector.

What is the correct setting value on the battery protector from 0 to 9 so that the batteries disconnect when they reach a 50% discharge.

I find no information about the relationship between the voltage of the batteries and their discharge value.

Thank you for your help.

Nuno Morais

I have an old Phoenix-Multiplus Inverter (the one that has the red bird in the case) and it's experience some voltage drop. can this be relacionted with the batteries voltage? in other words, when the voltage of the batteries start to lower because of a consumtion, mi output voltage in AC also starts to get lower?

In my mountain south of France, when the snow thaws next spring and snowdrops start showing, I intend to change the management of my 2kWp panels ans 30kWh batteries to Victron. That will be in the hands of a Victron man in Grenoble, but I want to undertand every bit of the program.

I am trying to master all the possibilities of the Victron System, and write clear explanations for my son. But I get lost in all theses cross references, papers, manuals. Writing down my findings in a kind of training document (called 'Vic's Bazaar') does help, but I fear missing important points.

Is there a online training system that could guide me in that search? I am not a sea farer nor a PV specialist, just a retired engineer fully powering his house with PV (and an occasional generator).

Thanks for your help

Lionel

Good morning, I wanted to ask the victronenergy professional staff if I can use my Phoenix inverter, running with my camper.

The system consists of a 300 watt solar panel with mppt regulator, and the service battery connected to the engine battery with a 200 amper relay, like the victronenergy cyrix, but of another brand.

The Phoenix is connected directly to the service battery.

There are contraindications using the Phoenix with the engine running, and with the alternator??

I do not think so, but some told me not to do it.

Thanks for answering.

Hi

We are experiencing this same issue on multiple sites. Both with AC connected PV and sites with charge controllers.

Quattro 5kw off grid system. 50hz 230v

When the backup generator is operating, the output from the Quattro varies wildly and also it appears so does the load placed on the generator - to charge the batteries (from the VRM portal data)

This is backed up up by the display on the generator (Hyundai DHY6000) which shows frequency.

Frequency output from the quattro is so unstable it cases the Fronius PVinverter to cut out and also the machine machine on site to go into fault. Also voltage is all over the place, and al lthis causes lighting flicker too.

UPS function setting is off

I have tried lowering the shore power setting.

I have tried lowering the output voltage slightly on the Quattro. (output on the genny when unloaded is 230v)

Dynamic current limiter on or off makes no difference.

Accept wide frequency range is on.

I am assuming that the quattros inverter attempts to track the AC input frequency and doesnt do a great job of it.

If powerassist was disabled - would this prevent the inverter output from trying to track whats happening with the AC input ?

Any ideas?

Thanks

Chris

Hi

After some information as to how the above components will react together in a ac coupled off grid system?

I understand frequency shifting will restrict the pv from the Fronius

How does this perform or react if there is a generator running for supplementary battery charging ?

Regards mike

Hi im installing a new installation with two 15kW quatttro's and two 8.2kW Fronius Primos all on a single phase, the system has a colour control but there is no internet connection at the site yet can i get the information from the primos onto the colour control without internet? thanks

I'm trying to spec out a leisure battery charging system for my Auto-Trail Motorhome. I currently have 3 X Yuasa L36EFB 100Amh batteries in parallel (12 volt).

I'm installing a 100 / 30 smart solar charge controller and a couple of solar panels. This will be wired direct to the batteries.

What I'd like to do is to have the batteries charged while the engine is running. The vehicle is a Fiat Ducato 3.0 litre diesel (2016 model) so Euro6.

What Victron kit will allow me to charge the batteries AND protect them from over-charging?

I'm considering the Victron Buck/Boost but I understand that this would not have a multistage profile and could overcharge.

This is really the start of my journey to a fully off-grid solution so in the future will be upgrading to Lithium batteries, lynx connection boxes etc.

Thanks for any help

Steve

Hi everyone!

I have an AC coupled off-grid system: MultiPlus 48/5000, 6kW solar panels, grid-type solar inverter Schneider Conext RL 5kW, 20kWh of lithium batteries.

Multi creates a grid and through frequency shift controls solar inverter. Solar panels generate electricity and through inverter feed my house and charge lithium batteries. Everything works almost fine.

Now I'm considering to expand the system to include more solar panels and storage. My primary interest is solar panels as sometimes I need more power from solar, for example to run air conditioner on a very hot day, when panel production deteriorates.

Adding more panels to the same system with single Multi is not recommended by 1-to-1 rule. I was thinking if it might be possible to add Tesla Powerwall with its own set of solar panels. Powerwall available in Australia is AC coupled and for grid applications only. I guess Powerwall should consider a grid created by Multi as a real one and feed the house and the grid itself. And Multi should be able to balance its own power with the power available in the grid.

Is there any major problem in this setup? Should I keep thinking in this direction?

Thank you.

Regards, Tim

I'm turning a truck into a campervan/housetruck, and since I have the roof space I would like to use excess solar to run a small hot water system. I have 12x200W (40V@5A) panels, and I'm thinking 24V to match the truck. The loads will total less than 3000VA because I'm willing to use one cooking appliance at a time (I have been doing this already as a test). I'd rather ask dumb questions of online forums than people trying to make a living selling solar setups, so here I am :)

I think I want something like this: either MPPT 150/100 (3s4p, 120V strings) or MPPT 250/100 (6s2p, 240V strings) feeding a Multiplus 24/3000/70 with a Color Control GX and BMV-702 battery monitor. In Australia a Sentry 24V/150AH is $4000 ($1.05/Wh, charge at 60A) while the Victron 24/200 is $6695 ($1.35/wh, charge at 100A) and I'm not keen on spending the extra $3000 if I don't have to. I don't need the extra storage, just the extra charge current acceptance.

Hot water can be either 240V AC or 24V DC, element changes are easy. And the thermostat will cut power when the tank is hot enough.

The question is how I get the power diversion to work. I'm told it can be done but I have been wandering round the Victron website feeling lost. Please advise.

Second question: if I want to limit charge current to 60A, can I use a MultiPlus 24/3000/70 rather than needing a 24/5000/100 and program it to limit the charge current?

thanks for any help

I have an offgrid system with a Victron mppt charger, and a Victron inverter, connected to a 12V battery. The mppt power is limited by the maximum current the battery can absorb, even when I have loads connected and their loads should be added to the limit. I also have a BMV meter that could send the actual current absorbed by the battery to the mppt controller.

Is there any way to implement this feature?

Off grid wildlife monitoring system:

Blue Solar mppt 100/15

3x Victron gel 12v 110Ah (12v)

2 x CanadianSolar 260W Voc 37.5V, Imp 8.56A, pv wired in series

Victron Pheonix inverter 12/180

Running during the summer months this powers 3 poe bullet cameras and poe+ switch, total 35W, and a wireless bridge 25W, all running 24/7.

What changes would be necessary to add to the load a PTZ camera (using high poe injector) with max rating of 50W?

Hello,

in the Victron product compatibility-list the pylontech batteries are listed to only can be used in an ESS-system. I think this is necessary of the CAN.Bus-Communication. This means that communication only works with the ESS assistant (why)?

I have to wait further 6 months for grid-connection to be built. For that time I want to build a small DC-Coupled PV and a Multiplus with Pylontech-Batteries. A big AC-coupled 30kWp-PV will follow next year. Since I wanted to install a Victron-ESS anyway I am wondering if I could use the pylontech also in an offgrid installation until the grid is ready?
Alternatively I wanted to install the ESS-Assistant offgrid and hoped i can use the pylontech without discharging them to 0% when grid isn't available at no time. I also don't know if a generator would be accepted in the AC-In then when a grid code has to be chosen.

I red that ESS shouldn't be used in an offgrid-installation neither. I know that ESS doesn't make sense in that situation, but it has du be used to use the pylontechs?
So is there a solution to use these components until grid will be available?

Thank you!

Hi,

I’m after some technical assistance with an off-grid Victron system that we are having a few issues with.

The system is comprised of 1 x MultiPlus 24/5000/120, 3 x BlueSolar 150/7, a 24V EpzV battery bank and an auto-start Generator.

The main issue we are having is that the system keeps on dropping out due to low battery voltage.

The generator is programmed to come on well before the low battery cut-off voltage and has been confirmed that auto-start is working correctly. The only issue with the auto-start generator is that the site is fairly remote and only visited a few times a month, so I’m guessing the generator is eventually running out of fuel.

After a recent site visit, it was found that the BlueSolar MPPT’s were not producing wattage. There was PV voltage of around 73V and battery voltage of 25V which were both shown when connected to the MPPT via the VictronConnect app, but no flow of current to the battery bank / inverter, even with a load of around 1kW. It looks like the MPPT’s were operating correctly, then all three have dropped out. I’ve attached a chart of their daily performance over a 30 day period showing when they dropped out.

So I guess the real issue is that the system is solely reliant on the generator, which is running out of fuel after a few days.

Any thoughts on why the MPPT’s would cut out ? I had thought blown fuses but they were sensing battery voltage and all three units are having the same issue.