new install in Brisbane. 10kW growatt inverter with 10.3kW of panels.
single phase gride connection, 5kW feed in capped.
3 solar panel circuits on North, East and West facing roof sections at 9 degree pitch. (yes it's not ideal but work with what we have)
I'm seeing large spikes in power produced dropping from 5kW to 1kW several times per hour.
I have't found any faults in the growatt log.
house electrical loads are the usual domestic appliances, no pool pump or AC system. Only fridges, laptops, electric kitchen cooking appliances, led lightbulbs through the house.
off peak hot water system might be turning on and off. will try a period with it turned off.
I suspect there is some issue with the export limiter causing the inverter to turn off one or more of the three solar panel circuits when 5kW export limit is tripped.
I'm checking with the installer what cable size is used between the meter box and inverter.
the inverter has less than 500mm of cable run from meter box. basically next to the meter box.
I've read elsewhere, inverters will trip out when the sense excess voltage level from the grid. I can't see a voltage record in the growatt logs, will try to setup some datalogging to record voltage levels.
Suggestions on troubleshooting methods welcome.
also: yes I know 10kW system on a 5kW single feed in connection seems silly. preparing house for future electric car, batteries and using oversized solar system to cover more of my early morning, late afternoon power usage.
single phase gride connection, 5kW feed in capped.
3 solar panel circuits on North, East and West facing roof sections at 9 degree pitch. (yes it's not ideal but work with what we have)
I'm seeing large spikes in power produced dropping from 5kW to 1kW several times per hour.
I have't found any faults in the growatt log.
house electrical loads are the usual domestic appliances, no pool pump or AC system. Only fridges, laptops, electric kitchen cooking appliances, led lightbulbs through the house.
off peak hot water system might be turning on and off. will try a period with it turned off.
I suspect there is some issue with the export limiter causing the inverter to turn off one or more of the three solar panel circuits when 5kW export limit is tripped.
I'm checking with the installer what cable size is used between the meter box and inverter.
the inverter has less than 500mm of cable run from meter box. basically next to the meter box.
I've read elsewhere, inverters will trip out when the sense excess voltage level from the grid. I can't see a voltage record in the growatt logs, will try to setup some datalogging to record voltage levels.
Suggestions on troubleshooting methods welcome.
also: yes I know 10kW system on a 5kW single feed in connection seems silly. preparing house for future electric car, batteries and using oversized solar system to cover more of my early morning, late afternoon power usage.