On Tue, 7 Feb 2012 08:34:47 +,
John Woodgate j...@jmwa.demon.co.uk wrote:
It seems IEC 61000-4-4:2004 (ed.2) clause 7.3.1.1 is clear on this:
The test voltage shall be applied simultaneously between a ground
reference plane and all of the power supply terminals, a.c. or d.c.,
and the
In message 20120208212033a.vef00...@nifty.ne.jp, dated Wed, 8 Feb
2012, T.Sato vef00...@nifty.ne.jp writes:
I did't feel the sentense is very good, but I thought the word
simultaneously made it clearer on this point.
It does, but the fact that people are discussing what it means shows
that
In message 20120207073526r.vef00...@nifty.ne.jp, dated Tue, 7 Feb
2012, T.Sato vef00...@nifty.ne.jp writes:
It seems IEC 61000-4-4:2004 (ed.2) clause 7.3.1.1 is clear on this:
The test voltage shall be applied simultaneously between a ground
reference plane and all of the power supply
Exactly! We have been in this exact debate many times over the years. I love
it. Even if it was made clear in the standard that you only need to test it
L+N+PE to GRP, I believe the consensus would still be to test all combinations.
The test doesn't take that long to do, the test equipment is
In message
64D32EE8B9CBDD44963ACB076A5F6ABB01C6A831@Mailbox-Tech.lecotech.local,
dated Tue, 7 Feb 2012, Kunde, Brian brian_ku...@lecotc.com writes:
More information is generally good.
But does that apply to ambiguous information?
--
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and
Message-
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Tuesday, February 07, 2012 8:06 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] EFT Power Port Coupling Paths
In message
64D32EE8B9CBDD44963ACB076A5F6ABB01C6A831@Mailbox-Tech.lecotech.local,
dated Tue, 7 Feb 2012, Kunde
Yea, the last I knew the standards do not specify the coupling path(s) to use.
Like Bill, we test all combinations. I have heard from some that this is a
Common Mode test so you only have to test LNPE-GND but the test doesn't take
that long so why not do them all. We have seen products fail in
On Sun, 5 Feb 2012 08:15:54 -0800 (PST),
Wendy Nya wendy...@yahoo.com wrote:
I checked several standards but they do not seem to dictate the
coupling paths to test. The equipment that we have, has all seven
coupling paths for single-phase power port: L-GND, N-GND, PE-GND,
LN-GND, LPE-GND,
For completeness, test everything. Late Friday I had a fail in this test. EUT
and AE are both two wire, no ground brick power supply operated.
Investigation begins Monday. It is not a consumer product.
From: Wendy Nya wendy...@yahoo.com
To: EMC- PSTC
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