As the topic suggests, are the CT provided by YHDC revenue grade i.e can they used to figure out the monthly electricity expenditure for your household?
Which ones? The SCT-013 series are most definitely not. The YHDC website has data sheets.
But… Do you understand what we mean by “revenue grade”? It refers to a guaranteed accuracy for both amplitude and phase errors over a quite wide operating range.
Why do you need revenue grade? Are you reselling electricity to someone else? If that’s the case, you should buy a certified revenue grade meter - then nobody can argue. Without that, you are liable to be accused of cheating because the numbers you come up with depend on a lot of things as well as the c.t. - like the how you measure the voltage, and the accuracy of whatever it is that you are building to measure the voltage and current.
I am building an energy monitoring system for my 3.5Kw solar panels. With esp32 responsible for sending the data to my AWS DB. Moreover, I thought about having a good and accurate CT if I can find one and came across different grades of CT clamps, so that I could have an accurate reading with little to no compromise on accuracy through which I can predict my electricity bill and maybe plan my finances accordingly. Also use a blink app. Thus, I asked.
The ‘best’ route for accuracy, not necessarily the most educational, would be to get a Modbus-enabled DIN-rail meter.
You’ll pay roughly the same for the complete meter as you would for a single c.t., with no guarantee of overall accuracy.
I would recommend the inline MID approved SDM120 for revenue applications: