Export limiting with my 8kW ECCO inverter
I've gone through 'Live Chat' twice and feel I haven't had an answer so will try here instead. I have 8 x US5000 and 1 x US3000 PylonTech batteries which seem to charge quite happily at a rate of 8kW udring the IOG cheap rate betwen 23:30 - 05:30. No issues here whatsoever.
When I come to want to discharge at the same 8kW rate there appears to be some kind of 'limit' being imposed in that the maximum discharge rate seems to be 'capped' at circa 6.2kW. It had been suggested that this might be a G89/ G99 related issue but I have changed to 'General Standard' and nothing has changed. All the 'Battery Settings' are at 190A etc. so, as far as I can tell, it isn' an obvious 'software' related issue. I have an agreement with my DNO (SSEN) allowing me to export up to 7.4kW. This is controlled via MODBUS for the main 12kW SolarEdge based system.
At this time of year the house is consuming circa 1kW so an export of 8kW from the inverter is only going to be 7kW export to the outside world. This could be HA controlled if necessary. Upfront I need to understand what is currently limiting the export. Thoughts welcome.
Regards
Richard
Pylontech batteries have 15 cells instead of the more common 16 which leads to slightly lower voltages which limits the maximum power inverter can deliver.