The BMS can only handle 100-150A momentarily. The pre-charge resistor should address the initial surge, but might not be sufficient for the short-duration overload requirement.So, is this statement of theirs about needing an inverter that's less than 80% of the battery bank have any electrical reasons behind it?
I know eFlex has a similar statement-- the minimum number of modules required for specific inverters. For the one I was interested in (XW-Pro 6848) it was 3 modules minimum.Does any other inverter and/or battery manufacturer make such a statement? I mean, it doesn't make sense to me. Their 6.5kW inverter's not always going to start up with full load on it, maybe it won't have any load on it, and may never get close to full load, so then it would meet their <80% requirement. It seems like they're just making it up as they go along.
The issue is that the startup power is roughly equal to the nameplate of the inverter.
I am a little torn on how to look at this. I don't know why there isn't better logic on operating the pre-charge resistor, but at the same time, why isn't there better information from the inverters on pre-charge requirements and start-up procedures that provide sufficient start-up delay that pre-charge resistors are disengaged?