Inverter load questions
I have the following technical questions:
1) In the case where the demand exceeds the inverter capacity, eg. Load is 10kw on the 8kw sunsynk inverter (split 50/50 on essential and non-essential) , can the inverter get the extra 2kw from the grid?
2) How does the inverter supply power to the essential and non-essential sides: Is the essential side always powered via the battery and the inverter keeps charging the battery, or if there is excess solar does the inverter supply electricity directly to the essential load and recharge the battery simultaneously (so load is done first and then excess solar goes to battery)? How is PV converted to AC on the non-essential side does it go straight from PV to AC without the battery?
3) When the grid is off then the battery is used to supply the non-essential load side. Is the inverter able to use excess solar to power the non-essential side? For example, during load shedding in south africa, if the grid is off but there is 8kw of solar available and the essential load is only 3kw (and battery is fully charged), can the excess solar (roughly 5kw) be used to power the non-essential load (with the grid off)?
The questions and the replies are great, thanks very much. South African load shedding maybe a problem that is not built into your system. I have similarly split my load into essential and non essential.
When the grid is down for load shedding and we have a great sunny South African day and my battery is full there is plenty of PV power that could be used to heat the geyser for example. At present it is impossible to send this free power to the geyser without making it part of the essential load, which maybe risky and run the battery flat at night.
Any chance of a system improvement to manage this type of situation?