Képernyőkép 2023-12-09 000431.png
I have a Multi RS Solar II inverter, and it recorded unreal values during a battery full-discharge situation. The battery is LiFePO4 48V Vmax << 646.59V!
Does it use these numbers for any calculations?
Can I reset it without a factory reset?
Hi @Zoltán Vaczulin,
These numbers are not used for any calculations, they are just a record.
It is possible to see spikes like this when batteries are disconnected, but they should get filtered out.
There is no way to individually reset these values, but I will pass on your experience to the RS R&D team.
A fix for this has just been added to the latest beta firmware - https://community.victronenergy.com/questions/249458/rs-shade-performance-testing-v116-beta-02.html
It will included in the next firmware update. Thanks again for reporting.
Could it be the BMS is disconnecting? That could result i a sudden spike on a multiplus, ive seen that when measuring under high load? If yes you should change your parameters in the RS and the BMS. So the BMS stay's an active second barrier when something goes wrong, but the RS is the first barrier in controlling.
Thanks, i am currently learning a lot about Victron products. Measured spikes when a bms of a (not software connected, only smartshunt) lifepo4 battery had a cell overvoltage issue due inblanace so i ended up using a inrush current meter to check and i saw a significant voltage spike when the BMS abruptly disconnected the battery under load. I think this is a little bit in the nature of a large torroidal.
(At least I think) Now I always suggest use a connected BMS, it will extend the overal life of all the components for sure.
Anyway, I would really like to attend for a course, i saw the Victron professional membership and have become member.
Can you help me with that. Since i rolled into troubleshooting on some Yachts, and i have build a ESS setup at home. So without any intentions i am becoming a trouble shooter, people start calling me, since i am am always determined to get to the bottom of the issue, even if its going to take me a lot of time. (Sorry went offtopic there)
If the DC elements are designed below 60V, can it demage anything?
Similar situation can happen when a fuse blows suddenly between the battery and the inverter...
Yes, of course, the battery was running out of energy, but I'm sure, that the voltage has never reached 60V, but it recorded 646V - ten times bigger. A BMS itself physically unable to provide such high terminal voltage. There are tools in hw or sw to make the measurements more reliable.
