My inverter decided to go with pensioen, now what, any ideas on Victron?

[1000kw-hunter]

Just like the title.
My three-year-old inverter 10kw cont 20kw piek just died.(chineesium: xyz brand....did a great job!!!!!!!up to 15kwh not even his fault?see my project)
I am looking into victron inverters.
Can someone tell me more about those ones?
They say i can connect up to 6 of them, 5kw each.
would be 30kw on the 230v side.
Any thoughts or (years) experience would be very appreciated.
Or any other brand?
My wish is to keep the house incl one shed grid free/off grid.
Piek consumption around (incl heating and cooking) 10kw, average use around 6kw(thiose are my best educated guesses)
Sadly, i still did not have money enough to buy a water heater for shower and such.


I think this one?

https://stroomwinkel.nl/omv-la/omv-la-omv-dc-ac/victron-phoenix-omvormer-48-5000.html

But regarding the future?(ev) i need more or this would be enough? six of them?
How to connect?
3 is 15kw is the minimum i would like/must to buy(15kwh), but is there more?other brands?

Give me all you got, please, my system 3.0 must have something strong.

With best regards Igor, thanks in advance and sorry for my bad English.

 

[Menno]

Wouw that has been a long time ago, that we spoke. I am currently in the process to install my system. I have 7.3 kW on my roof and another 2.7kW coming. As inverter I am installing 2 Deye High voltage 3phase inverters (10 and 12 kW). My normal load is as far as I could determine almost always below 10 kWh. I choice two inverters master/slave so I can run mostly one, but when all goes loose then the second jumps by. Will one of the two break I can still run on one and should be more attenuative when I use what. Advance of the Deye is that they are rated good and very efficient. Also running the master constant and the slave on standby reduce the amount of (standby/initial) energy used by the inverters

Peak load will be, heating the house with heat pump, cooking, running spa of sauna and charge the CAR. I can manage to charge the car overnight and have only the Boiler and Washing machine in the worst-case scenario.

Each Inverter will get its own 50 kWh (600V) battery and in summer half of the 7.3kWh. And the last 2.7kWh panels get the initial 90 kWh pack (50V) with a 48V 5 kWh cheap Chinese inverter. These last panels can be directed the master inverter to have more energy to run the house. In Summer when I have to much energy the 48V system will run a oil cooled coins miner and the waste heat will be with a heat exchanger used in the pool. In wintertime I will add the 2.7 to one of the other inverters to have more energy to run the house. Initially I was planning to run with four 5kWh inverters 3 to make my three phase. The Deye inverters, counter to what I expected, run easier on not balanced loads.

As the calculations are now I can run 6 months complete of grid and the other six (winter) I need to add form the grid. The 90kWh pack can be also used to charge the car if needed and isn't run empty by the miner.

 

[1000kw-hunter]

Those are beasts.
Problem is that our roberment does not allow such high dc voltages.
The smaller inverters from deye can do on 48v nominal(below my interest), the bigger ones need higher voltages(not allowed)
My battery is not suited for higher than 48v nominal.

I found out that Victron have also some really heavy weight inverters up to 15kw each.
Max in parallel are 6: 230v and 90kw, that is a bit to much for now or 6 times 3 for 380v for 75kw.

I think ill go with 2 of those 15kw, just lets get over it and be done with it, the expansion of the battery will have to wait until Christmas, in the meantime we are losing 10 to 15 euro's a day cous we must buy right now from the grid....sigh battery is at 100% full sun all over...sigh.

Btw i measured the preferer switch and it seems that there is something pretty wrong, it does not disconnect one of the two entrances.
So the inverter got a hit from the grid or a short thanks to the switch.
My old inverter does not give anything anymore, just dead, pretty safe. the switch is making noise and start smelling.
Both were tested separate on the bench with extra breakers under supervision and kill switches.

I will screw the inverter open to see if i can find something, hoping for a fuse that i can replace or a capacitor or something easy to fix.

Wouw that has been a long time ago, that we spoke

Indeed, looking at your story we are heading the same way, nice going

With best regards Igor

 

[Taranakian]

You won't be upset with Victron. We switched from the cheap gear we had to buy because we'd just spent all our money buying our land to Victron and I'm grateful for it every single day.

The reporting is amazing. I was once on my way home from work, stopped at the grocery store to buy pick up something my dog, and debated getting a snack. I looked at the Victron widget on my phone and, based on the power consumption, could tell my husband was making dinner at that moment so could skip the snack.

I run a small bank of AGMs and a small bank of LiFePO4s, for now. The AGMs are on a cheap inverter that feeds into the AC-In on my Multiplus-II. When we demand more power than the Multiplus-II is capable of providing, it pulls the excess from the AGMs, combines it with power pulled from the LiFePO4s, and seamlessly meets our needs. I'll replace those AGMs with the power wall I'm building and just yesterday I bought a Victron Phoenix inverter to replace the cheap white label one we've been using.