Hello. Our system is Victron Quattro 8kVa with BYD L-box of 14kw and the SMA SB 5 kw solar inverter. The system is configured with Color Control/ ESS in the self consumption mode
The problem: Just before the SoC reaches 100%, the battery might disconnect with overcurrent error message, indicating about 32A in the error message. The battery will reconnect after 4-5 seconds. This occurs normally once per day. The problem can be reproduced when the SMA inverter output is about between 1 and 2 kW.
1. Is it possible to verify that the supplier has provided the correct firmware version for the BYD batteries ? It seem to be below what is recommended, but I might be mistaken
2. I've uploaded the video demonstrating a problem:
https://www.youtube.com/watch?v=HpnYdB5XaZI&feature=youtu.be
the system fails at the index 1:48 min
additional info:
the problem happens both in grid-connected mode and in the isolation mode
when it happens, the Quattro will enter "absorption" mode, and it seem to try maintaining the absorption voltage commanded by the battery, while no longer respecting the charging current indicated by the battery.
Any assistance is appreciated
Best regards,
Oleksiy Frolov