Popular Post astrotoy Posted November 2, 2021 Popular Post Share Posted November 2, 2021 I have a similar configuration to austinpop, 36 solar panels (from Solar City now Tesla installed 12 years ago) and three Tesla powerwalls, installed last March. This summer I bought a Trifield EM100 meter and measured the noise level of my AC line when the powerwalls were providing all the power to the house. The readings were between 18000 and 19999 the maximum number that the meters can record. Then, at night, when I just using power from the grid, the numbers were around 500, much more typical numbers. However, I could not hear any effect on my audio system either time. I contacted the designer of my audio power supply - Scott Rust, of 512 Engineering. I have two of his Symmetrical Power Supply transformer units and have my entire system connected through the two units. Here is Scott's explanation of why my audio system is unaffected by the high readings. The Trifield description states “ The Line EMI Meter measures electromagnetic interference in a single-phase AC power line.“. The symmetrical power supply produces a dual phase output (60 volts one phase and 60v opposite phase). This means that this particular tool is not capable of understanding and measuring the performance of the symmetrical power supply. It’s actually measuring only one phase of the power and is not able to “see or appreciate ” the effects of the balanced power signal. It’s actually quite difficult to measure the performance of the power transformer. I’ve found the easiest way to measure the power supply performance is actually by measuring the result of sensitive equipment connected to it. I would expect that a typical single phase “power conditioner “ would read much lower as advised. Regarding the Tesla power walls: I’d expect some pretty heavy duty switching of power at high rates of speed, which would indeed elevate noise on the power line. The transformers are very good at doing this, I would expect this noise to be greatly reduced at the output of the (Symmertical Power Supply) transformer. Larry austinpop and The Computer Audiophile 2 Analog-VPIClas3,3DArm,LyraSkala+MiyajimaZeromono,Herron VTPH2APhono,2AmpexATR-102+MerrillTridentMaster TapePreamp Dig Rip-Pyramix,IzotopeRX3Adv,MykerinosCard,PacificMicrosonicsModel2; Dig Play-Lampi Horizon, mch NADAC, Roon-HQPlayer,Oppo105 Electronics-DoshiPre,CJ MET1mchPre,Cary2A3monoamps; Speakers-AvantgardeDuosLR,3SolosC,LR,RR Other-2x512EngineerMarutaniSymmetrical Power+Cables Music-1.8KR2Rtapes,1.5KCD's,500SACDs,50+TBripped files Link to comment
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now