HI
I have just gone onto grid power from being off grid and all running fine, all seems to be working well, but noticed the solar gone to idle, even thou we have sun, and the AC loads gone to critical. Just seems like the grid is acting like a pass thru?
Where are your loads connected?
You have a schedule running, what is the configuration of this schedule?
How did you go to grid power? Any chance you set the switch to charger only?
It would be helpful to detail your installation, what hardware is in it, and what the configuration settings are.
Hi Nick
ive sorted it, just testing now, it was the Grid Metering , changed from grid meter, to invertor charger.
That would do it.
Hi Nick, would you know the settings to stop using the grid even for large loads as my batteries can take 250amp drain and when i plug in my car it using the grid even thou batteries at 90%
Depends why it is pulling from mains. What are your ESS settings?
In an optimised (self-consumption) ESS mode, it will only follow the setpoint and use battery until minimum set SOC.
Your system is on a charging schedule, so while that is active, it will use grid.
What are your schedules for? Are you using DESS?
Just using ESS, i looked at setpoint and set to 50w default, not sure if raising this to say 5kw would help? The charging schedule is 1am for 3 hours
Raising setpoints forces grid use.
The system, configured correctly, will discharge solely from battery above min SOC or until the inverter limit is reached.
During charge schedules grid use is normal.
With multiphase regulation, the system is also trying to balance phase usage to a net zero
I did try the setpoint and worked the wrong way!!! LOL..
is the 3 phase set at multiphase the right way to go, as we have different loads on different phases? During charge schedules i am fine with using grid, as i intend to connect car and set charge times on the car.
Depends, you can see one phase feeding back to balance usage.
This assumes your supplier permits feeding back.
Here they don’t so we use individual phase reg instead.
What inverters are these?
Are any limits set in ESS?
I am using 6 x multiplus ii 48/5000 in a 3 phase configuration, i am on no feed back to grid
also noticed your doggy.
no invertor limits set, as i would presume if they overload then the grid would kick in automatically?
Correct.
Those inverters are capable of servicing the load, so not clear why it is pulling AC.
Are you sure the meter is installed in the right place?
6 multis is a complex setup and there is a lot of room for error.
I would start with a clamp meter and check that all the systems are contributing and that they are balanced across parallel sets.
This is where it often goes wrong.
I have a nodered flow that also shows parallel imbalances.
Start with the basics and work from there.
As for the hounds, I have 3, all snoring next to me at present.
I think I’ve done ok this is my personal setup at home and never done this before, i started with one invertor and increased the system. I am a novice at this but done quite a bit of research over the years, not to sound silly but how do you mean : I would start with a clamp meter and check that all the systems are contributing and that they are balanced across parallel sets.
This is where it often goes wrong.
One doggy is enough 
will the system always use some Grid, it flicks between 500w and 900w all the time?
When systems stubbornly pull/push grid beyond what they should, it can sometimes be down to parallel pairs being imbalanced - mixed age systems, are a common cause, or too short/thick wiring etc. So there is a disparity in contribution.
If you apply a load and then measure with a clamp meter that each inverter in a pair using similar amounts of AC/DC, then you know the system is healthy.
There can be big differences which go unnoticed and cause issues.
It should hover around the setpoint, grid parallel systems tend to be less accurate.
With a 50W setpoint it should not always sit at 800W. It should orbit the setpoint as loads come and go.
not sure what meter you are referring to?