Measuring and acting on solar export


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Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 08:31pm 07 Jan 2022      

Back in ancient times, before smart meters were invented, we used to log three phase power by fitting a three phase spinning disc electricity meter, using an optical pickup on the disc.

With two optical pickups arranged in quadrature, its possible to count both the turns and record the direction of rotation.