I have installed 2 Flukso devices (a V2 and V2B), running the same firmware (232). Now, this weekend I have bought 3 additional clamps in order to measure a separate circuit. To make sure everything works though, I have put the new clamps in exactly the same position as the existing 3 clamps. Situation: I now have 2 Flukso devices, measuring , exactly the same consumption - well at least they should be.
What I now see, is that there is a difference between both measurements of a bit less than 100 Watts... (the V2B measuring a bit more than the V2). How can that be? Can that be due to inaccuracies in the clamp measurements? Or differences between the A and B devices? Or influences from wires outside the clamps?
PS I have 3 phases at home, 240 Volts (not 400 - so my settings are at 133 Volts in the sensors).
Al the sensor settings are the same on both the devices, i presume ?
To test: Change the connections of the three clamps to another Flukso device, and vise versa.
Did the V2B measuring again more, or is it the V2 now ?
Perhaps one current clamp is connected with revert polarity ?
Also make sure the suspect clamp is closing correctly.
Thanks for your advice. I didn't quite do as you suggested, but... by reading your answers, I thought about de-summing the phases. That way, I could see each phase separately - and saw that 1 of the phases was missing in the V2. And that clamp was not well connected (the wire was in the Flukso, but the screw was not fixed so the wire was loose). Problem fixed! Thanks both!