Calibrating watt readouts for 3 phase without N

Hi all,

I am really happy with the purchase of my FLM03E and now I am trying to pass the measurements of water, gas and electricity to EnergieID (https://www.energieid.be).

When comparing the meter readouts for electricity with the watt measurements of Flukso, I find that Flukso consistently measures 41% less kWh compared to the meter.

The forum offers great explanations about the difference between real power and apparent power, but could this explain a 41% difference?

Is there a way to correct this? I read in the forums that one could adjust the voltage of each line, but cannot seem to find how to make this adjustment in the interface.

My configuration:
- 3phase without N
- 3 current clamps of 50A
- a sample of the Flukso dashboard attached below
- a photo of the current clamps installation attached below

Note that N is connected, but not operational, measurement is taken on brown, black and grey directly coming from meter.

Thank you for your insights!

Kristof

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ndupont's picture

Hi,

I'm quite surprised that the green trace is symetrical with the red one.

I know the FLM03 was expected to be "phase-aware", but I'm not sure it will work with 3 phases.

Anyway the difference is probably coming from switching power supplies, and an induction cooktop.

For me the efficient solution is the addition of an (inexpensive) pulse meter in the distribution board.
My 50A clamp gives 270W standby power, where the pulse meter reports only 98W.

Greetings

Nicolas