Trouble is, you can never be sure . It might be Air Force 1 that gets
the EMI!
On 2019-03-08 15:56, Ken Javor wrote:
Re: [PSES] classification of the output Unless the output overload
test modeled something that occurred fairly often in practice, it
seems to me that EMI caused during such an event would not be a
serious issue.
Ken Javor
Phone: (256) 650-5261
------------------------------------------------------------------------
*From: *John Woodgate <[email protected]>
*Reply-To: *John Woodgate <[email protected]>
*Date: *Fri, 8 Mar 2019 09:41:41 +0000
*To: *<[email protected]>
*Subject: *Re: [PSES] classification of the output
There are serious EMC implications as well. Since most EMC testing
doesn't cover overload conditions, the effect you describe could
result in many complaints of EMI in the field.
Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk <http://www.woodjohn.uk>
<http://www.woodjohn.uk>
Rayleigh, Essex UK
On 2019-03-08 09:24, Boštjan Glavič wrote:
Dear all,
I would need your advice about classification of the output of
power supply during abnormal operation. I know that quite many
discussions were already done, but this was with regard of touch
current.
During output overload test unit goes in hiccup mode. There are
more than 3s between main pulses. Pulse voltage does not exceed
60V (see picture 1). The problem is that each pulse (hiccup) is
composed of small pulses (see second picture). How to treat this
output?
Customer is not happy with ES2 classification.
Can we each pulse separate to AC and DC part and try with limit
for Combined AC and DC?
Thank you for your support.
Best regards,
Bostjan
Picture 1 – output hiccup.
Picture 2 – zoom of individual pulse
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