question

@wanek

FYI that is the inverting rating. So what the inverter can supply, aka it cannot invert more than that from the battery (note it's rating is also based on battery voltage) and solar.

The 50A input allows charging, full loads on the AC1 output and some loads on AC2 output. So you can pass more through the unit and have solar contribute to non essentials.

50A at 180v is obviously less passthrough that 50A at 230v. And not everyone's grid is at 230v. So a realistic rating there.

Use a 50A input. Wiring sized accordingly. If wiring is smaller use a smaller MCB.

25A output on AC1. Sized with the wiring of course to match.

Curve rating choice is usually based on local law.

And a breaker never trips at its rated current. Look at the trip curves on c and b related mcbs. The inverter will shut down safely (if battery is correct) before the breaker trips in almost all scenarios.

I have seen 9500w pull through a 32A breaker and it never tripped.

Nothing there is controversial here. Just need to know how to design and dimension an electrical system. In the inverter world everything is amps based, voltage affects power output.

Hi!

Thanks for the prompt reply! First of all, I apologise if my question was not very clear: I was asking about this product:

Inverter RS 48/6000 230V Smart Solar

https://www.victronenergy.com/inverters/inverter-rs-smart-solar#pd-nav-secondimage

As you can see, this device has no such thing as AC input, neither multiple AC1 nor AC2 outputs.

It has just a single mains AC output, which, according to the users manual chapter 2.3, it can provide "peak 9000W or 50A AC".

What I do not understand, however, how is that 9000W or 50A calculated? As we are talking about a 230V device here, I assume it is a realistic expectation that the inverter output voltage should be all the time close to 230V. But doing the math: 9000W/50A, it gives only 180V, which means either there is an error in the documentation, either the inverter will have a significant - 28% - voltage drop at 50A load.

What are the maximum acceptable voltage deviations for these inverters at while they are still considered functional? In the datasheet it says "Output voltage: 230 VAC ± 2 %", so I would assume that for all the provided peak power values this should be valid, until otherwise noted.

Also, stating in the datasheet "Short-circuit output current 45A", then stating in the users manual "peak 9000W or 50A AC" for me it is controversial. How can a device output 11% more curent then the official 45A Isc?

Thanks!