Current direction detection incorrect on channels 2 and 3

[dominique_manas@hotmail.com]

Hello,
I have also noticed another issue with the KinCony N30 when using the current direction detection.
My N30 has three rows/modules, and all of my current clamps are installed and wired in exactly the same physical direction.
However, when I enable the current direction detection, I get inconsistent results:

• Module 1: current direction is detected correctly and the power values are positive.
  
• Module 2: the power values are negative.
  
• Module 3: the power values are also negative.
  

This happens even though the clamps on modules 1, 2 and 3 are installed in exactly the same direction.
Without current direction detection, the measured power values are otherwise consistent.
This makes me suspect that there may be an issue with the polarity/sign handling or current direction detection in the firmware for modules 2 and 3.
Could you please check whether the current direction detection is implemented identically for all three modules?
In particular, I would like to know whether there is a firmware configuration or calibration parameter that could cause modules 2 and 3 to have their current direction inverted compared with module 1.
The expected behavior is that, with all clamps physically oriented in the same direction, the three modules should report the same sign for the same direction of current.
Thank you.        

[admin]

If the polarity is incorrect, you can cross-connect the CT (current transformer) wiring.

[dominique_manas@hotmail.com]

Sorry, I understand that reversing the CT wiring will invert the measurement.

However, my Energy Monitor 1, 2, and 3 are wired identically, with all the CT clamps installed in exactly the same direction. So why does EM1 report the correct polarity while EM2 and EM3 report the opposite polarity?

Could we have a parameter in the new firmware to configure the direction independently for each channel, for example by multiplying the measured value by -1 when required?

This would also make it possible to compensate for any polarity differences between the three Energy Monitor modules.

[admin]

we will save your suggstion, maybe update on next version.