PCB for measurement and scaling - review request

[mike buba]

Hi all,

I have created a dedicated PCB for measuring AC voltages and currents and scaling them to low voltage levels for op-ams and DPS (in another board).
As suggested in one of the previous post, I am using a current transformer for measuring AC currents.

The basic power schematics is shown here:


It is a 2-layer board.

I would appreciate your comments and suggestions on the schematics and layout.
Also, I am not sure if the current transformer can measure non-linear current, e.g., this one?

Schematics is here:
, , and

Layout is here:
and

3D model is here:
and

Thanks, MB

[mike buba]

Does the layout look okay?
I did have many iterations, and somehow this looks the most promising. However, I have no experience with combining high voltage (230 Vac) and low voltage. I tried to have enough clearance between signals and also added some board outputs when this was not possible.

[Kean]

I've not reviewed it in any detail, but the clearance slots look very narrow.  How wide are they?

I'd recommend 2mm as that is a standard routing bit size and you seem to have plenty of space.

What is the purpose of measuring in and out current?