Network input inverter or other power supply

[phil59]

Here, I'm thinking about taking this one, to be able to select on a separate board, priority over lighting, fridge, etc.

To make the switch between the "EDF" network and an inverter, I think of this, in 125A, I tell myself who can do more, can do less.

The inverter is a 2000VA, so even 63A is way above that, but that's Chinese, so 63A....

commutator.JPG (53.31 KiB) Viewed 1726 times

https://fr.aliexpress.com/item/4000943742083.html.

[Christophe]

Exactly: don't forget to divide the Chinese amps by 10 to get CE amps...

[phil59]

125A/10=12.5A

230V*12.5A=2875W

So for a 2000 kVA, less than 2000W, I should be fine!!!!!

[sicetaitsimple]

So for a 2000 kVA, ...

Don't get carried away!

That said, not sure I understood, it's just for back-up in the event of loss of the EDF network?

[phil59]

Oops, 2000VA, of course, less than 2 kW, or 2000W.

Automatic inverter if no more network, and with the tempo subscription, to switch the red days, on, according to the state of charge of the batteries, charged with solar, and I forgot to say box, and main tv, gas boiler , and boiler stove circulator.

You also need roughly the same type, for DC, to invert the PV input and battery charger, on a micro inverter.

With my panels that I have left in "rab", 6 in total, I will put them on

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To power the MOs at night, by blocking the production on approximately 150W, to also cover the background noise of the night.

If I don't block the production at 150 W, my pure Chinese MOs, see typing at the max, and grill them.

[sicetaitsimple]

Automatic inverter if no more network, and with the tempo subscription, to switch the red days, on, according to the state of charge of the batteries, ...

OK, the idea is more to manually switch to batteries + inverter for essential needs on red days when "Tempo" electricity is very expensive than to have automatic backup in the event of loss of the network. I understand better.

[phil59]

It's a bit like the idea, but with 7 kWh of lead battery, admittedly free, which I will be able to renew, by pulling 2 kWh on it, it won't look very far, 1.30€ per red day, and even if several days red in a row, unless charging the batteries at night, with all the losses, generally, above 2-3 days in a row, I think it will not be possible ...

The whole thing is that the initial investment is reasonable for use, troubleshooting, and if it works as I hope, I will soon be at 20-30 kWh of battery.

[sicetaitsimple]

That's the whole problem..."DIY" as you do or wish to do with lead batteries collected free of charge, with certainly average performance, that's fine, it keeps you busy and interests you, which is always a good thing and it can work "medium" on the other hand, which will always be a satisfaction..
But hey, it's still very limited compared to what will certainly be possible with V2H or V2G in a few years... Your Kona is about 50kWh very reactive compared to your 7kWh of lead batteries certainly already well exhausted ....
What I just want to say is that the "generalized" electricity storage will not go through end-of-life lead batteries, but that absolutely does not change the point of what you are doing!

[Christophe]

Automatic inverter if no more network, and with the tempo subscription, to switch the red days, on, according to the state of charge of the batteries, ...

OK, the idea is more to manually switch to batteries + inverter for essential needs on red days when "Tempo" electricity is very expensive than to have automatic backup in the event of loss of the network. I understand better.

In this case, why not use a manual transfer switch from a recognized brand? Like Legrand or Hager?

[phil59]

We don't know the future, we don't have a cut today, but tomorrow, we don't know how all this will evolve, "CALM DOWN". Having an automatic thing is always nice, handy.

The batteries are changed as a preventive measure, so not at the end of their life, but not designed for that.

With 20 kWh of battery, it's about 6 kWh for the day of availability, so there, it covers about the needs of a day.

Kona, yes, but we don't know how to access this ability, unfortunately.

The next models probably yes, if only at 3kW at a time.