I have a Multi II with a 7.4kWh lithium and 4.3kWp PV and Smart Solar 250/100 coordinated via CerboGX on ESS with self consumption and battery life optimisation
I’ve noticed that when there is grid interruption there is an output break of sorts lasting millisecs. The ledTV, AV system, satellite TV decoder (reboots) and fridge all see the break. These devices have surge protectors I must add (could they be reading the millisecs changeover as a surge?).
When grid is restored the same thing happens. I didn’t have this with a Voltronics inverter. Sometimes even with stable grid sometimes it happens. With grid around this is preceeded by a humming sound from the multi. I cannot speak to the quality of the grid. We are coming from 12hr load-shading in last year or two so supply is meant to be stabilising. Quality issues on frequency affecting Multi?
To stop this annoying ke I switch off AC supply to the multi. But I had needto switch it back on and noticed this issue when there was a 5hr grid interruption. Anyonecare to explain this?
i can run offgrid but do need grid to support load when batt goes below 20% as set in ESS. if off I do get wuite low at times. System can be viewed here:
https://vrm.victronenergy.com/installation/87104/share/80d299b4