Hi community,
I would like your help to understand why and mostly also how to avoid such a behavior
Installation is
Monofasic ESS installation with
- 84kWh of LFP battery
- 10kVA multiplusII
- fronius 3kW with 3kWc panels bus AC
- and RS450/100 with 5,6kWc panels bus DC
Behavior is
when using a hairdryer I noticed (as I was in front of the local Cerbo console at the time of use) that despite a production of 1500W by the fronius and almost 2000W by the RS450 that with hairdryer on, a consistant and unstable qty of Watt were taken from grid, between 800 and 1500 for a 2000W appliance and during all the time this appliance was running (more than 1 minute), as soon as it stopped, the system came back to a normal behavior with the grid (between -50/+50W to adjust the load).
I also have some high power appliance (Heat pump, EV charger) but never saw such a behavior with the grid consumption.
Could anybody have an idea about what occurs than, as this is fully reproducible, and mostly also give me some hints about how to avoid this (for your info, no, I don't want to change my wife for one without the need of an hairdryer ;) )