Hi All,
For some reason I have a constant ~50W coming through my second channel. This is connected to my PV array inverter output and while I can see the bell-curve of the day's output, I also see this constant ~50W all night when the inverter is off. If I disconnect the collector, the reading drops to zero. Does this mean that this phantom signal is being induced by the other wires in the meter box?
Thanks,
Karl
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Hi Karl,
For my proper understanding: If you disconnect the current clamp from the inverter output and close it, you obtain a reading of 0W? But when you re-connect it again you get a 50W base load at night?
Some further tests you might do if this is indeed the case:
1/ Disconnect clamp 1 (and close it) but leave clamp 2 connected to the inverter. Do you still see the base load at night?
2/ Disconnect all clamps from the electricity cables and connect clamp 1 to the inverter cable. Does this give the same effect?
David has a similar setup to yours. His solar curve reads 0W the whole night. So this should work.
Cheers,
Bart.
Bart said: "For my proper understanding: If you disconnect the current clamp from the inverter output and close it, you obtain a reading of 0W? But when you re-connect it again you get a 50W base load at night?"
Yes. I actually disconnect the clamp at the Fluksometer (much easier to do).
Will send through results of others tests ASAP.
Thanks,
Karl
Hi Bart,
1/ Disconnect clamp 1 (and close it) but leave clamp 2 connected to the inverter. Do you still see the base load at night?
Yes. Interestingly channel 1 didn't go to zero but dropped to ~70W, see attached.
2/ Disconnect all clamps from the electricity cables and connect clamp 1 to the inverter cable. Does this give the same effect?
Yes. 50W now coming through channel 1
So that means that current is flowing through from the inverter right?
Cheers,
Karl