Say you have a Multiplus II (or EasySolar II), with ESS and Grid connected (where, as said a lot of times, you cannot zero the feed-in, there are always “traces” of back feed, to the utility meter). Several times, you go off-grid (interruption of power, or intentionally).
Now, suppose you have other sources of AC power, which you want to use (for cost or redudancy reasons), via a transfer switch to the ACin of MPII (Grid - none - Other). The other could be:
- a Genset, either “simple”, or inverter.
- a EV with its V2L socket
- a power station (those 1-2kWh+ big power banks, with AC inverter)
Since the ESS is bi-directional, i.e. “follows” the incoming AC, but occassionally feed it (current towards the “other” source), what do you expect to be the behaviour of the above devices? Is it safe to inject current to their AC output?
Alternatively, what other mode of MPII, instead of ESS, could be (temporarily?) selected, when planned to connect to such “other” input device?
(I do not know how Quattro deals with its second ACin - meant for generator - I am talking about MPII’s single ACin)