On Sat, Jun 18, 2016 at 11:30 PM, Gary Willett <g...@icarussolarservices.com > wrote:
> > Page 14: I am assuming that the Sonnen system is comprised of the > components and functionality encompassed in the box in the upper right side > of figure 2. And the Outback Radian is the inverter used for "F" - the > "Storage System" inverter? > Correct, although the consumption meter is also included. They supply the external metering which you have to install externally in the PV supply cabling. > Pages 14, 15, and 29: No info on PV array sizing is provided. Does the > Sonnen design assume that a totally separate grid-tied inverter system > already exists or must be installed if PV charging is desired? > The PV design depends on the consumption model, how much battery, but they do advocate no more than 8KW, which is what we are using on the installation. I think you could use about 4kW quite easily for a ECO16. It depends on the daily consumption of the home. > Page 15: The system is AC coupled. When in "Backup Mode" how does the > Sonnen BMS control charging from the external grid-tied PV inverter system > once its battery modules are fully charged and the house loads are low? > Does the Sonnen BMS handle this situation without disconnecting relays or > frequency-shift throttling? > Frequency shift. It will change the micro-grid frequency to 60.9hz > Page 15: Is the nomenclature in Figure 2 for the Utility Power Meter "G" > and the Consumption Meter "D" reversed? > G should be "Home". Not sure what they were doing there, I will let them know.
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