Thank you for your thoughts on this, CFRA
So as i understand it a little backcharging of 100w is allowable.
This might not raise a red flag by a utility because as long as it's brief, it would look like a motor being back-driven by a dynamic load. A large cooling fan (e.g. drying wheat) that suddenly receives a very strong gust of wind might do that for a second. This is not a condition that would re-energize a grid during an outage because then, the fan would already be shut down.
There is something that I just can't put my finger on that undermines my confidence in the Victron products. I wish I could say specifically what it is.
The Radian has to give and handle surges up to 30KW, short pulls of say 12KW and run all day at 6KW. As you know the BIG BOY's don't tell you this stuff in their sales blurb.
I can't quite see the concern here. The transformer that serves my property is rated at 25kW, and looking at the loads on my house and other buildings I am unlikely to surpass 20kW unless it is the winter and I'm very busy meaning that not only are the furnace and electric heat going at the same time (5kW) but also I need the water pump (2kW surge - 0.5kW continuous), but my wife is making supper (3kW) and drying clothes (2.5kW) at the very same time that I'm doing some welding (3kW). And as usual my son has left all the lights on (3kW).
With a Radian in the system, I could regulate its ability to supplement the power demand from 0.2kW to 7kW.
When not backcharging to the Grid, does it redirect to the batteries. ?
Yes but only if you have PV connected to the Radian that can charge them. In my primarily wind system, that wouldn't happen.