On our boat we have a nice system.
2.3kw of Solar to a Fronius inverter which is AC coupled to a Quattro. This goes to 1000ah of lithium batteries. And is monitored and controlled by a cerbo gx.
It has AC inputs from shore power and a 6kva generator.
There is a centaur 12/80 from a previous setup. I have just read that the centaur will accept 80-400v DC input. The Solar comes in at about 150v DC The Solar has Tigo optimisers on every panel which kind of do mppt .
My question is, can I connect the centaur to the Solar as a backup system?
It may not be the best most efficient, but I have the equipment already, and as a backup it may be handy to do…
From the manual, it seem that a centaur will accept both AC and DC input voltage
”Universal 90-265V AC input voltage range and also suitable for DC supply (AC-DC and DC-DC operation)
All models will operate without any adjustment needed over a 90 to 265 Volt input voltage range, whether 50 Hz or 60 Hz.
The chargers also accept a 90-400 V DC supply.”
