3-phase AC measuring circuit without transformer

[pradeepdeepu]

Hello,
i want measure 3-phase voltage through Arduino pro-mini please suggest me a circuit without transformer

 

[KlausST]

Hi,

There are already so much threads about this topic.
Read through them.

Klaus

 

[andre_luis]

In addition, you need to specify in the search if you want take the Peak or the RMS voltage, although by mentioning Arduino it suggests the simplest option.