So i have just had a Solar Battery installed and want to check a few things.
Ive noticed that when the battery is discharging, my Consumption outpput was in Negative Value, which im assuming will no longer give me correct overal house consumption readings?
Do i need to reconfigure my clamps so now i have 3 for the battery? (3phase setup)
Or does my output calculations need to be modified?
For what its worth, these my current outputs:
Just trying to get my head around it all
Cheers
Not really enough information to offer any advice. Some random thoughts:
If your consumption was always positive before the battery, seems like the battery might be exporting to the grid in order to get a negative Consumption.
It appears you have an integrator setup for Grid. That can be tricky with three-phase depending on how the utility calculates export. Consider whether the three phases are added for the net, or if each phase is independently measured as import/export.
A line drawing of your system would be helpful to understand what is going on.
Thanks for the response
Consumption was always positive prior. Now that nattery is in, i get a negative consumption when battery is discharging back to house
crude line diagram attached
Correct i have integrators setup
Sorry, do you mean on utility side or iotawatt side?
Well, both I think if they are to match up.
Couple more questions:
Is the battery inverter three-phase? (most of the units I’ve seen are single-phase).
How does the battery system know when to charge and discharge? I’m guessing it has its own CTs on the mains? Does it also have CTs on the solar inverter output?
Yes, battery inverter is 3 phase, inside the board they have intsalled a Chint DTSU666 meter, with CT’s on the mains and solar inverter cables - right next to mine actually! with a data cable from the chint meter to the battery inverter
As for the net metering, i believe all phases are added together at the meter
