2 day's ago I succesfully installed a flukso-device + 3 clamps. My main interest is metering de power from my solar-installation. It consists of 7 Steca 500 Net inverters in 2 groups (5 and 2) on one powerline that is metered bij a Clamp with the name: 'Zon1'. I have a 1 fase 230 volt installation. I have 2 steca Net-controllers with measured the power of the two Solar groups, but one broke down.
My problem is that clamp 'Zon1' is metering Ghost-current. At night when the steca inverters are sleeping/swithed-off the clamp registered a current of 235 Watt. I checked with an other device the same line and it reads 4-15 watts (jumping) which is consistent with de spec's of the Steca's (should be zero, but okee..). When I disconnect the sub-group of 2 steca's the measured power drops with 50 watts. When I switch the powerline completely off the clamp Zon1 measures 3 watts. I tried installing the clamp on another position, neutral and back to the hot line but with the same results. I switched of the Frontdoor-Bell-transformator that's near the solar-powerline, but the same result. What is clamp Zon1 metering? Can I adjust the result by substracting 235watt from the results?