On 18 mar, 16:20, blanko <electro...@[EMAIL PROTECTED]
> wrote:
> Should I be trying to prevent the 8kV discharge or route the discharge
> to ground? Any comments on this would be appreciated.
>
> -M
Hello,
When you completely fill possible creepage paths (resin, glue, etc),
you can block it from entering. You will only get a kind of corona
discharge that is mostly not harmful.
When it is not possible to block it (for example a LED in a front
panel opening), you might put a grounded ring around the LED. So that
the arc strikes the ring instead of the lead of the LED. Off course,
the ground path must be large/heavy enough to divert the ESD from
sensitive circuits.
The minimum creepage distance depends on the surface material and
surface conditions. For 8 kV level, I would think of about 8mm or
more.
Hopes this helps a bit.
Best regards,
Wim
PA3DJS
www.tetech.nl
remove abc from the mail address.
|
