Question about power plane in 4-layered PCB

[mkbs]

Hi to all,
I'm going to design a new pcb with 4Layer (Top-Pwr-Gnd-Bottom),but
now in this project I have a zone with 220V (Transformer - connectors - ptc .....)
and I don't know if:
• I have to delete all plane in this zone (completely remove internal copper)
• or just respect the constraint with a "round no copper flash" on layer plane for every pins?

What do you do in general ?

mkbs

 

[v_kumar]

Re: Power plane question

HI,

GENERALLY
1) it is adviced not to keep the planes continue.
2) I sepate the two planes power and low voltage planes by giving clearance of 40 mil.
3) or do not pour in that area and use thick copper traces to connect to the pins.

thanks