61000-4-5 Surge lower levels
David,
Have been (still am) out of the office testing this week.
I am sorry to say that I cannot provide hard data to support my comments.
That experience was two lifetimes ago at a different employer. It happened
on more than one product model and on more than
Dear Group,
The physics of air discharge (= the reason for the variatins, the effect of
humidity, speed of approach) is quite well explained in
D. Pommerenke, 'ESD: Transient Fields, Arc Simulation and Rise Time Limit' ,
Journal of Electrostatics 1995 36 (1995), pp. 31 - 54
David Pommerenke
Further to my earlier email.
The ESD test that we were undertaking was on a digital device. The
ESD was direct discharge and at the voltage level of failure, about 3
out or 10 discharges were failing. Since device operation was
dependent upon the data being received, it was considered that
...@naradnetworks.com,
emc-p...@majordomo.ieee.org
Subject: RE: IEC 61000-4-2 ESD 61000-4-5 Surge lower levels
Date: Mon, 10 Jun 2002 20:33:57 -0500
Dear Scott,
(1)
I have looked at quite a bit of literature that plots
Failure propatibility vs. Stress level in contact mode like testing
]
Sent: Monday, June 10, 2002 4:46 PM
To: emc-p...@majordomo.ieee.org
Subject: RE: IEC 61000-4-2 ESD 61000-4-5 Surge lower levels
David,
I disagree with you here. As others have said, I have seen numerous failures at
less than the maximum required test voltage while the same system passes
Please respond to Pommerenke, David davi...@ece.umr.edu
To: Neil Helsby nei...@solid-state-logic.com,
emc-p...@majordomo.ieee.org
cc: kro...@yahoo.com (bcc: Don Borowski/SEL)
Subject: RE: IEC 61000-4-2 ESD 61000-4-5 Surge lower levels
Dear Group,
For most EUTs there is no need
David,
I disagree with you here. As others have said, I have seen numerous
failures at less than the maximum required test voltage while the same
system passes at the max required voltage. It seems to me the intent was /
is / should be to verify product performance up to a maximum level, not
: kro...@yahoo.com
Subject: Re: IEC 61000-4-2 ESD 61000-4-5 Surge lower levels
I think there are two points here.
1) If you believe that in the environment in which it will be
used, your product may be subject to levels in excess of that defined
in the standard, you must test to that higher
: kro...@yahoo.com
Subject: Re: IEC 61000-4-2 ESD 61000-4-5 Surge lower levels
I think there are two points here.
1) If you believe that in the environment in which it will be
used, your product may be subject to levels in excess of that defined
in the standard, you must test
I think there are two points here.
1) If you believe that in the environment in which it will be
used, your product may be subject to levels in excess of that defined
in the standard, you must test to that higher level.
2) Yes, failures can occur at mid range levels. We have just
recently
The EMCTLA's Technical Guidance Note No 39 may be relevant here.
These TGNs are guidance to UK test labs on how to apply the EMC directive and
EMC test standards.
You can get to TGN #39 via www.emctla.org.
If it doesn't answer your question completely, send an email to the EMCTLA's
In a message dated 6/7/2002 5:01:43 PM Central Daylight Time,
kro...@yahoo.com writes:
If the EN 55024 calls for 1,2 kV for surge on the AC,
does this mean we have to repeat the test @ .5, 1kV
too? For ESD, 8 air, 4 cont should really be 8,6,4,2
air and 4,2,1 cont??
This is indeed the
Hello all,
I'm confused. When preparing an EMC test plan for CE
requirements I've been told to narrow in on Generic or
Product Standards (which ever is more applicable) to
help demonstrate compliance. For example, if testing
to EN 55024 ITE immunity, the standard calls for
various IEC Basic
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