I currently have 3 phase power and a 3 phase solar inverter with about 10kw of capacity
My setup is 3 emontx v3 shields with arduinos.
I currently have a power point on each phase that the AC-AC transformers meassure voltage from
ct1 → mains phase1
ct2 → solar phase1
voltage-> ac-ac → phase1
ct1 → mains phase2
ct2 → solar phase2
voltage-> ac-ac → phase2
ct1 → mains phase3
ct2 → solar phase3
voltage-> ac-ac → phase3
im using 2 different models of ac-ac adapters. (2 from an old system i used to have and another when i added a 3rd emontx)
The models of the ac-ac adapters i havent found existing calibration.
To calibrate them i took a 100watt halogen, wrapped the active around the ct sensor 10 times to give 1000watts of current.
The adjustments i calibrated were:
emontx1: vCal = 275.8
emontx2: vCal = 266.7
emontx3: vCal = 291.5
Then the following current and voltage settings for all tx:
That got my test globe to 1000watts
However the power that my solar inverter reports (it has a display panel) about 6.8k currently
but emoncms is reporting just shy of 10k which is way out.
Have i done something stupid or misunderstood the calibration?