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Multiplus II backfeeding?

cdsolar

caduceus
Joined
Dec 16, 2022
Messages
301
Location
Utah, USA
I have a Multiplus II 3000/48 UL.

I have assistants setup to ignore AC input above a certain SoC, and to not ignore AC input below a SoC level. Say, 80%/30%.

This all works as expected, and the AC in runs the loads when SoC is below 30% and battery runs them again when SoC is above 80%. My question is not about the values themselves, as I am still experimenting and adjusting.

Here is the question. When AC-in takes over, and for whatever reason I turn off the loads themselves, AC-in begins to report -3 to -5 Watts, a backfeed, in VRM.
Knowing these measurements in VRM are not exact, should I be concerned?

This is not a grid tied system and no grid code is configured.
 
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