offgrid

HI < I have the following installed and working ok until a recent shift in the weather so needed the generator,

1 x 10KW Quattry with 433 firmware updaed

Color GX with V2,23

2 x MPPT 150/100 with V1,39 ( 24 x 250Watt modules)

BYD Box 10 x 2 with V4.17

Good quality 1500RPM 15KVA Generator with very stable 231V output and 51HZ no reaction to loads( IE no slowing etc)

System has been working fantastically well under quite heavy loads until called for generator,

The system starts generator ok on demand at an SOC of 20%, and runs up genny ok, then connects to the Quattro input and goes through the normal sequence, starts bulk charge, after a few mins ( even as much as 15 mins) all seems normal, then for no apparent reason the AC input is dropped by the inverter, and the system reverts to invert, after a few minutes the AC in accepts input and goes to passthrough and then Bulk, and again after a few mins drops the AC input, and so it goes on,l imit inverter off,

On system Setup,

Battermonitor automatic, Sync VE BUS SOC On,/use solar charger current to improve Bus VE SOC on, Solar charger voltage control On, Solar charger current control on,Has DC System off, DVCC On, , SVS Off, STS On, Limit charge current On, BMS control On

Generator start stop, on Auto, SOC< Battery voltage and Load atr 5KW,

any ideas as to why the Inverter keeps dropping AC would be helpful, or if I have any setting incorrect or not activated please advise,

thanks,

Hi all,

a friend has an older off-grid solution with inverter 24/5000 and lot of lead batteries.

Now he wants to upgrade with Multiplus2, BYD Box Pro 13.8, AC-coupled Fronius and CCGX.

The question is, can he use the older inverter like a generator only for emergency power ?

And will the CCGX be able to communicate with the inverter ?

to illustrate the idea.......

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First of all, happy eastern to everybody!

I've planing to build an 3 phase system wie Multiplus II inverters. For my off-grid installation I asked my, what happens if one of the inverters stops because of an error or defectiv.

Does the other two inverters work in 2 phase systems through, or does the compelte cluster stop working?

A lot of thanks!

Tom

I Am using ESS in an off grid system with hybrid batteries.

I only discharge till 50% Soc with Victron Quattro

My question is, while configuring the ESS, should I define the Absolute or the Useable Capacity?

Thank you

Can i connect grid-tied inverter on the output of off-grid inverter ac side, In order to reduce battery usage during the day and take more advantage of grid-tie inverter?

Recently my SOC kept showing less and less (down to 46 % before I partially solved the problem) even though the battery showed 28,2 volts (24 volt lithium Ion battery -Easysolar 3kVA).

I set the charging values on the multiplus lower than the MPPT (since I dont have a bluetooth dongle yet I cant adjust the MPPT charging parameters) after reading about this here on the forum.

The SOC then bounced up to 100% -but the maximum SOC % is slowly going down again by a rate of 0,5% per day:

Now the SOC is showing 97% as todays highest although the battery voltage is the same (28,2 volt).

Any tips on how to solve this?

Eric

Hi,

I have a Quattro 48/5000 running firmware 431. Off-grid, Venus GX , 3 X Smart Solar Lead Acid Batteries.

On three occasions the unit has shutdown with an overload error - in each case I am sure that there was no overload. The incidents have been about 2 weeks apart.

The second time that this happened, BOTH the temperature AND overload LED were lit.

The most recent incident (today) just the overload LED was on. This time I spent more time trying to diagnose the issue. I tried to reset the inverter using the remote console - using the "Switch" option (ie on the remote console turning the switch to off then back on) - doing this caused the overload LED to go out while the virtual switch was off - but the fault remained when it was turned back to the on position. Physically turning the switch on the inverter to OFF, then back to ON did clear the fault and the inverter restarted.

The inverter is about 4 years old. It may be just a coincidence, but the issue has only started since I installed the Venus GX and updated the inverter firmware to 431 about a month ago.

I am really concerned about this as we are often away from home for weeks at a time, and while I do get notified of errors, if I can't restart the inverter remotely, we could be in real trouble with freezers etc.

Any ideas what might be causing this issue?

Is there anything I can do to help diagnose the fault?

Is there any other way to remotely reset the error?

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

We have 2 Quattros 15k in paralel per Phase = 6 Inverters in total.

In the grid switched off, the first one have a solid inverter LED on but the second one’s Mains and Inverter LED blink in sequence.

Can’t find this fault in the manual.

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 all, I would like to add a small turbine to supplement renewable energy production in the Winter (when pv naturally drops off)

It is a 48V victron system (5 Kva inv/charger with a BYD-B Box LiFePO4 10 kwhr with 4.8 kwp of DC coupled pv via a 250V/85A victron charge controller).

1/ What would be the ideal charger settings (a 3rd party charge controller) to suite 55.2V/55.0V or 56.5V ?

2/ As it is "DC coupled" an AC sensor is out of the question, so is there a way for this wind generation to be represented on the VRM monitoring (even if it shows as pv)?

Any suggestions are most welcome!

I am about to change our inverter over to a new victron, and we need to get a generator to go with it.

The system will be a venus GX and a victron multiplus 5000/48 AC-coupled with a fronius primo 5-0-1 and later on a DC coupled blue solar MPPT. Batteries are 2x LG RESU 10, so 20kwh in total.

I want the AC input on the multiplus to be a generator- for charging only. I've always been told that we need to use an inverter generator to keep the power quality up but I note that a few places on the victron site suggest that AVR units will be fine- thoughts? I don't want a huge generator, about 5kva ish is my plan, and use the current limiter on the ac input to ensure its not overloaded.

Hi to all, there is my concern if some can help me please.

I use a 1200VA along with two 190Ah batteries to operate a 220V 0.5Kw immerged water pump.

When i plug it to the pump, the red light goes on, the pump doesn't operate while the clamp ammeter shows 700 watts (i do not reach the 1000W).

When i use a honda 2000W gasoline generator, the pump works good at 500W.

Why does it get stuck at 700W with the inverter and works good with the generator ?

Many thanks.

Had this fault and shut down a couple times when the attached generator shuts off, generator is attached to two 15kW Quattros in parralell. I was thinking maybe one charging circuit shuts down slightly before the other causing the remaining one to spike? Batteries weren’t full I only take them up to 45% on the generator. Any help would be great. thanks

Dear Experts,

This is an enquiry from a construction company in Al Ain, UAE who requires a solar PV powered port-a-cabin. I have also attached our system sizing report, Trina solar panel ( 400 Wp) , Midea 1 ton AC and battery datasheet for your kind consideration.

This port-a-cabin is going to be operated at a construction site.The load chart is finalized as per the client’s requirement. All the mentioned load will be working from 6 am to 6 pm continuously 24x7 for 6 days / week. Night time consumption i.e. from 6 pm – 6 am is 0 excluding modem.

Client is worried about the two 1 Ton air conditioners working together with the other loads as mentioned in our case study report at a temperature of 45 to 55 degree Celsius. They are looking for some similar project reference or technical assurance from the inverter manufacturers that their inverter and other related components will be sufficient enough to operate these loads at the afore mentioned temperature conditions.

As per our calculation , battery requirement is in the range of 24 – 28 pcs of 12 V,200 Ah LEAD ACID. In this situation BMS is mandatory to make sure that all the batteries are charging and discharging equally .

We have tried our level best to convince our client by saying that even though your system is working during day time , battery bank should be optimized. Client is having a thought that they can reduce the no.of battery to 12 or 16 pcs. They don’t have a generator or grid as back up.

What is your opinion in this case ?

Please cross check and verify whether our study is correct or not , if not then please suggest us a better solution from your side so as to make it more economical and practical.

Cheers,

Eng.Prabi Prasad

Alain Solar

A weird situation -

I have a victron multiplus providing power to a house for backup purposes.

When the power to the house is supplied by the multi the Hive heating system doesn't work.

The heating receiver connected to the boiler works for a small amount of time (less than 30 min) before going to an offline state.

This doesn't happen on grid.

has anyone had this same issue?

Just for info the internet connection is fine, the batteries are circa 80% SOC, i'm wondering if the output of the victron is not accepted by one or more of the elements of the hive system

Hi, I am having a problem trying to run a washing machine or a dishwasher on the Quattro.

Both machines refuse to drain and the program timer will continue instead of ending at a stop point. Any ideas?

My son's alarm clock runs fast.

The microwave runs quieter and sometimes trips the rcbo

Everything runs fine on "normal" mains

Thanks for any help

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

Hi,

I am trying to start a manual equalise on my flooded lead acid battery bank.

My off-grid system:

3 X Smart Solar MPPT (East,North & West arrays)

1 X Quattro 5kva 48v

1 X Venus GX

All devices are running the most recent firmware (as at 10/03/19)

With the three controllers in FLOAT, using the Victron Connect app on my phone, I start a manual equalise on each of the controllers. They all flash the blue and orange LEDs to show equalise mode is active, but the voltage never rises above the set absorption voltage.

The settings are the same on each of the controllers and are shown below.

Also below are the graphs showing the reported controller state (all three are the same) and also the reported system voltage and current. I tried to start the equalise at midday.

Any help or suggestions would be gratefully received.

[image]

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Hello, I had a question about Multiplus and Multigrid. I am building a small off-grid system with 4 solar panels off 300 watts each that will charge battery's using an MPPT charge controller. I also want a backup generator to charge the battery's if they get under a certain level, and I will be using an inverter to make 230VAC 50Hz from the battery bank. At least I am also using a wind turbine that will give me a peak of 600 watt.

So a short list of items.

- 6x Solar panel 300 watt

- Battery bank

- Multiplus or Multigrid?

- Inverter

- Backup generator

What will be the right choice? Multiplus or multigrid.

And is this a realistic setup? Or is there a more efficient way?