Do you have a product?

USA, PA, current inverter/charger is Xantrex 6000W which does not “play nice” with my Fronius Primo grid tie inverter through AC coupling. Do you make an inverter/charger that does 48VDC battery bank, 240vac 60hz as the virgin sine wave inverter, that will play nice with my Fronius Primo 11.5KW grid tie inverter during grid down? Needs to be about 6KW continuous load in inverter mode, about 100A to the battery bank.

Try looking at the Multiplus2 or Quatro 10kW inverters. Do look at the continuous power ratings to see what you need. Also Not that you can run 2 or 3 smaller inverters in parallel to get the power.

Everything I looked at has the inverter output at 50Hz. The input is 50hz or 60hz, but operating as an inverter its all 230vac at 50hz which is European “style” specs. USA would be 240vac 60hz. So it seemed that even though they claim a close working function with Fronius, it doesn’t seem to be the USA type of specs…..

They can all be configured to 60Hz using VE config - I think.

This is correct. If you’re in the US, you’ll need split-phase 120v/240v output. That will require 2 of the 120v models, configured 180 degrees out of phase. This is reasonably common in off grid scenarios

See this: https://www.victronenergy.com/upload/documents/Datasheet-Quattro-3-10kVA-120V-EN.pdf

Or: https://www.victronenergy.com/upload/documents/Datasheet-MultiPlus-II-120V-EN.pdf

Though given you are working with a grid tied PV system, you’d get the most out of an inverter that is grid interactive.

You won’t be able to operate the Victron units in grid-interactive mode (ESS) in the US given the lack of proper grid code / certifications.

Thanks….