Hi All , some background on the system it is a 3phase solar system with 3x 48/5000 Multiplus Inverter/Chargers

2x Victron MPPT (1x BlueSolar 150/70; 1x SmartSolar 150/100) and 30x 295W Canadian Solar Panels

Then we have a 10 kWh Revov R9 2nd LiFe battery set with Tian BMS and Victron BMV battery monitor 

we recently got the batteries back from revov after having some issues with it dying at 60% SOC

so far so good but they did mention there was a discharge spike of around 200A which blew some fuses inside the unit.

From what I observed that only happens when running in inverter only mode and sometimes on ESS w/o BatteryLife mode even with the correct inverter power limit set.

as can be seen on below VE bus graph, when a big load kicked in +- 3000W

BMV shows a less significant spike

 

As well as the System battery measurement graph

 

revov says the max discharge limit is 150A and can sustain a 100A draw.

1st question or advice needed do I follow the BMV or the VE bus data?

as from what i can see understand the VE bus also reflects solar power.

anything else we can do to limit the discharge spikes from damaging batteries again?

so far we have installed cbi astutes on all big critical loads and also moved some of the constant big draw circuits off critical loads and onto non-critical/ ac loads.

from what i read this is a common problem on the victron ess system according to victron forums and they seem to be hesitant to introduce a current limit feature as well, stating that the inverter power limit should suffice.

 

AFAIK, Victron requires the batteries to be able to handle the surge capacity of the inverters connected to them. That basically means you have to add batteries to get you to the 3x10kW surge capacity of your 3 inverters...

1 minute ago, P1000 said:

AFAIK, Victron requires the batteries to be able to handle the surge capacity of the inverters connected to them. That basically means you have to add batteries to get you to the 3x10kW surge capacity of your 3 inverters...

Yes correct they did say we need more batteries and that the system’s batteries are undersized. We are planning on adding some at a later stage.