Hi,
We are to install an off-grid PV system using 15VA Quattro, lithium batteries, and Fronius inverters. The site has grid available, hence we would want to use it as the back power supply.
We would want the AC Grid to be used by system during the following conditions:
1. Battery SoC < 20%, grid back-up to disconnect at SoC > 80%
2. Load > 12KW, grid back-up to disconnect at Load < 10kW
I read that there is an "Ignore AC Input" setting that we could possibly use to program the Quattro. Has anyone done this before?
Or do we need to use the relays and use contactors to connect /disconnect the grid to/from the Quattro?
Thanks in advance.