V[quote=“bluetardis, post:70, topic:248”]
There were SCT013-000 originally on the mains but they were from the “old batch”.
Not to put too fine a point on it, I believe the correct models for those voltage type CTs is SCT013-050, SCT013-030 etc. Educating the world about the confusion isn’t anything I’m in a hurry to do, although I’ll be more aware of the possibility next time I get a low reading inquiry.
While the SCT013-000 works fine, I don’t recommend them. I’ve tested all of the CTs you see listed in the config Dropdown with a special rig that measures linearity and produces a phase shift profile. The Echuns, in my opinion, are superior in just about every way, and they have UL and CE certifications. I’m not aware of any certifications for YHDC CTs.
I’ve seen quite a bit of advice handed out that encourages careful CT and burden matching to get optimum results. While the case can be made academically, I’ve yet to see where anyone has actually shown any imperical evidence that it matters. The proof of the pudding… Maybe I didn’t look hard enough. I’ve run 800, 1000, 2000, 4000 turns on the same wire and had equal results.
In the test that you did on one wire, there were some outliers At 2% of the average, but in a true test you would need to space them an inch or so to eliminate interference.
If your solar is still low with the meter after a couple of days, try changing the CT.
Don’t get hung up on power factor. Unity (1.0) is useful for sorting out the phases, but the problems you Were having with voltage type CTs should not effect PF.