negative values to consumption ( seems when there is no consumption)

Hi

i've installed few days ago the 4 pro pm .

seems all ok apart a negative values in consumption...

i mean, i have attached 4 deviator... powered on the first, lights, the consumption was 13 w... when i have powered on the second, this gone up to 45 w and light gone down to -3w.

and i dont' know why.

https://1drv.ms/v/s!Ah9pnbQsj2KdkcgDg39t16mC2Rn15Q?e=lf6q4Y

so I've attached the others and I have this situation

if I power on a light, the consumption for -3w goes up to 13w for example, so the lights works for me.

the strange things is that when i have all the lights off, the values is not Zero but is -3w

the fase of every deviator is corrected inserted in the shelly O

I don't understand if it's a limitation of shelly, that can reach only tot W and manage the power between the O .... or it's another problem.

ps: i haven't a photovoltaic

Zitat

Can you please show us your wiring and the connection scheme?

forgive me, i haven't a photo of my correct situation atm, but is same this

this is my cabinet, and shelly is in the bottom right same as photo.

N (blue) and F (orange) coming from the principal, and the 4 deviator are connected with their F to the shelly O

Zitat von thgoebel

Welcome to the forum!

To your issue: Electronic circuits (e.g. dimmers or other gadgets) have usually interference-suppression capacitors built-in. Thus, there is a small amount of reactive power in idle state of the apparatus. Capacitive reactive power is displayed as small negative power with very low power factor.

so, this means it's normal that if powerd off these are not 0 but negative values...