i have some different current values.

when the Power of one phase is more then aprox. 200W the calculation and display is correct

when the battery provide the load, the power is close to 0-10 Watt,  i have some unclear current readings ?

the Power is correct

i have all phases checked the correct clamp to the right phase !!

please give us the sketch map of your system. especially the place of the battery.

we need to confirm what this condition means from your sketch map.

"when the battery provide the load"

Here we are 😅

laoliu

please give us the sketch map of your system. especially the place of the battery.we need to confirm what this condition means from your sketch map."when the battery provide the load"

Hi,

About the question of why there is still current when the power is nearly zero.
I think it is because the power is the active power, not the apparent power.
Active power = U*I*pf
So I think this is because the pf(cos computation of the angle between U and I) is nearly zero, which means the angle of voltage and current is nearly 90 degrees. 

About why this occurs(angle of 90 degrees between U and I1), we need to know more about your system.

it is a little complicated from the sketch-map, please help us to confirm such issues.

1 what is this part, I once consider this is an inverter, but I found there is no inverter symbol there.

2 whether the "batt" in the red line is a "AC storage"?

Whether this is the "battery" in your first question? ("when the battery provide the load")

Hekerle

Here we are 😅

 what is this part, I once consider this is an inverter, but I found there is no inverter symbol there.

yes you are right, there is three seperate Solar Inverter an each phase  SMA 3800, SMA 3000, Sorotec 5,5kW 

2 whether the "batt" in the red line is a "AC storage"?

Whether this is the "battery" in your first question? ("when the battery provide the load")

the Battery is on right side (54VDC) 

when i write 3080T i mean only the iammeter  (BATT, HAUPT, PVL1, PVL2L3)

i power the Grid from the Battery in the night.

my Home

laoliu

Hi,About the question of why there is still current when the power is nearly zero.I think it is because the power is the active power, not the apparent power.Active power = U*I*pfSo I think this is because the pf(cos computation of  the angle between U and I) is nearly zero, which means the angle of voltage and current is nearly 90 degrees. About why this occurs(angle of 90 degrees between U and I1), we need to know more about your system.it is a little complicated from the sketch-map, plea

Please let me know if my understanding is correct now.

Part 1:

2 three single-phase inverters .you did not choose a three-phase inverter, but three single-phase inverters, yes?

Part 2:

1 this is an "AC-storage" equipment and can be charged by the grid and discharged to the grid, yes?

2 I saw there is a PV symbol that connects to it, whether it means it can be charged by both PV and grid? Or just can be charged by grid?

Hekerle

 what is this part, I once consider this is an inverter, but I found there is no inverter symbol there.yes you are right, there is three seperate Solar Inverter an each phase  SMA 3800, SMA 3000, Sorotec 5,5kW 2 whether the "batt" in the red line is a "AC storage"?Whether this is the "battery" in your first question? ("when the battery provide the load")the Battery is on right side (54VDC) when i write 3080T i mean only the iammeter  (BATT, HAUPT, PVL1, PVL2L3)

Part 1:

three single-phase inverters .you did not choose a three-phase inverter, but three single-phase inverters, yes?

yes this is right there on three different places, see the picture:

Part 2:

1 this is an "AC-storage" equipment and can be charged by the grid and discharged to the grid, yes?

no,  there is only a DC LifePo4 Battery with 2 PV DC Charger, and on this Batterypack are three on Grid Inverter conected.

2 I saw there is a PV symbol that connects to it, whether it means it can be charged by both PV and grid? Or just can be charged by grid?

no,  charging only via PV discharging only via 3x2kW Inverter.

laoliu

Please let me know if my understanding is correct now.Part 1:2 three single-phase inverters .you did not choose a three-phase inverter, but three single-phase inverters, yes?Part 2:1 this is an "AC-storage" equipment and can be charged by the grid and discharged to the grid, yes?2 I saw there is a PV symbol that connects to it, whether it means it can be charged by both PV and grid? Or just can be charged by grid?

Thanks for your detailed feedback.

I probably understand the composition of your system.

I found a possible problem in part 2 .

Because it is charged by PV, not grid. it will be more like a "hybrid inverter", not the "ac storage".
So you ought to set it in the meter type of "inverter", but not "ac storage".

From your share link, there is a "battery power " . So I guess you set the meter of part 2 as the meter type of "ac storage".
Please change it to the meter type of "inverter", and change the corresponding CT directions of the meter (part 2).
otherwise, it will affect the parameter calculation(such as self-consumption rate) in IAMMETER-cloud .

The output energy in "ac storage" will not be considered as "yield energy" in IAMMETER. Because it is only charged by the grid and also only discharged to grid.
From your description, part 2 is charged by PV and discharged to the grid. So it should use the meter type of "inverter"