Shelly 3EM negative readings

Momos

Hi,

I am so glad i found you all hopefully someone can point me in the right direction as i am getting very frustrated with my Shelly 3EM.

So i have installed one Shelly 3EM at the fuse box where power lines come into my yard. I have installed it as per the manual ( I think ...) following this drawing : - so i connected VA,VB and VC together and then to the phase B. N is connected to neutral, rest of the ports are free.

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The clamps i installed them on the 3 phases also as specified in the manual:

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even thou i find it weird to be this way. (i would think it should be reversed)..

I do not have any solar pannels, nothing that can produce energy.

My Shelly readings:

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I have tried to put the clamps in the other direction, still no luck.

Any ideeas please ?

Momos

nobody ? please.

Brandhand

Hi Momos,

I wil try in my best schoolenglish.

Do you have an 3 Phase Net?

If yes then you have to use all the Phases to measure the current correctly.

Were is your 3EM mounted?

England?

Or Where?

Could you please tell us.

Greetings Brandhand

joeli

Hi Momos,

the readings suggest a 3 phase setup. Only phase B seems correct, this seems the one connected to VA, VB and VC. The other two suffer from the phase offsets.

If so, you need to connect VA, VB and VC to the corresponding phase lines independently.

Cheers,

Jan.

Momos

Thank you for answering but why does the manual offers this connection method? to bridge VA,VB and VC together and monitor all 3 phases. I understand in this case i should get the same voltage readings of course.