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Altium CircuitStudio
Altium CircuitStudio Forum Clearance difference by layers
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  • clearance rule
  • high voltage engineering
  • clearance
  • layer
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Clearance difference by layers

ziomau10
ziomau10 over 5 years ago

Hi all,

In some High voltage design it is necessary to impose a large clearance for high voltage nets.

Normally a surface distance have to be considered, like 2.5mm for 250V isolation.

But when the same nets run in some inner layer the distance is not anymore on the surface, but insted in volume.

In volume situation the distance for the same 250V isolation is much less (like .5mm) allowing to pack much more tracks in the same space.
In CS I saw that there is a "Net and Layer" rule that can be used for this purpose, but nothing related to "Net Class".

If on a circuit there are tens or hundredths of nets in the High voltage class I need to type a roule for each net and for each layer.

This may easily add up to thousandths of rules...
Is there a simpler way?


Regards.

Mau.

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  • voltsandjolts
    0 voltsandjolts over 5 years ago

    On a quick test this type of rule seems to set clearance depending on net class and layer:

     

    image

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  • ziomau10
    0 ziomau10 over 5 years ago

    Good!

    I missed that!

    Thank you.

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  • voltsandjolts
    0 voltsandjolts over 5 years ago in reply to ziomau10

    If you have a lot of nets in your schematic that need to have a net class applied, it is easier to use a net blanket.

    https://www.eevblog.com/forum/circuit-studio/net-blankets-for-circuitstudio/

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