This seemed to me to be a simple question, but it's turned out to be one with
different answers from the experts, so I'm confused. Reading section 5.2.2 of
60950-1, seems to say that an ITE product (computer server specifically) that
is Overvoltage Category II can use table 5B to determine the
Hi Mike:
For a peak working voltage of 340 (240 rms), the routine test
(Table 5B) is 3000 V rms for 1 second between mains and ground.
(You do not have a peak working voltage exceeding 420 so Table
5B Part 2 does not apply.)
If you apply Table 5C, you must determine required withstand
Many thanks Rich. I thought it would be 3,000 Vrms. That would be 4,243 Vdc!
That is a far cry from what our procedure says now. These numbers are in line
with what's in our CB reports as well. Oh well, what's another ECO among
friends
Regards,
Mike
On Aug 6, 2014, at 5:41 PM, Richard
] Routine HiPot Testing
This seemed to me to be a simple question, but it's turned out to be one with
different answers from the experts, so I'm confused. Reading section 5.2.2 of
60950-1, seems to say that an ITE product (computer server specifically) that
is Overvoltage Category II can use table
-0400 (EDT)
List-Post: emc-pstc@listserv.ieee.org
Date: 06 May 96 19:12:17 EDT
From: Egon H. Varju 73132.2...@compuserve.com
To: Kazimier Gawrzyjal kazimier_gawrzy...@nmisq2.miss.nt.com
Cc: IEEE emc-p...@ieee.org
Subject: Re: Routine Hipot testing
Message-ID: 960506231217_73132._ehj7
.jaa11...@netserver.fisonssurf.co.uk
Comments: Authenticated sender is nrouse@mailhost
From: Nick Rouse nro...@fisonssurf.co.uk
To: emc-p...@ieee.org
List-Post: emc-pstc@listserv.ieee.org
Date: Tue, 7 May 1996 09:51:12 +
Subject: Re: Routine Hipot testing )
Priority: normal
X-Mailer: Pegasus
Amendment 2 of EN61010-1, the European version
of IEC1010-1 has not yet been listed in the Official
Journal. Therefore the change that makes appendix
K normative and 100% production hipot testing a
requirement of that standard is not yet mandatory
on those for whom EN61010-1 is applicable and
who
-pstc@listserv.ieee.org
Date: Mon, 6 May 1996 13:45:58 +0500
Subject: Re: Routine Hipot testing
CC: IEEE emc-p...@ieee.org
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Reply-To: janos vajda jva...@modicon.com
X-Resent
Note 1 of section 5.3.2 is in the 3rd edition of UL1950, July 28,
1995.
Tania Grant, Octel Communications Corporation
__ Reply Separator _
Subject: Re: Routine Hipot testing
Author: janos vajda jva
Subject: Re: Routine Hipot testing
To: Egon H. Varju 73132.2...@compuserve.com
Cc: IEEE emc-p...@ieee.org
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Date: Mon, 6 May 1996 13:45:58 +0500
Subject: Re: Routine Hipot testing
CC: IEEE emc-p...@ieee.org
Priority: normal
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Reply-To: janos vajda jva...@modicon.com
X-Resent-To: Multiple
RERoutine Hipot testing 5/6/96
Kaz-ESN 765-4805
Egon,
You may have a point.
However, Note 1 of UL 1950 ed. 3, cl. 5.3.2 merely reads: For production
test purposes, it is permitted to reduce the duration of the electric strength
test to 1 s.
Kaz,
On 1996.5.5 you wrote:
I believe that the harmonized, 3rd edition of UL 1950/ CSA C22.2 N0. 950
has pulled the requirement for 100 % hi-pot testing out of the standard.
Not to say that this is no longer a requirement. A comment from a UL
rep. was that such factory testing is included
Dear Mr. Varju;
Could you please tell me which version of UL1950 did you refer to. In
a 1989 edition section 5.3.2 has no Note 1. Section 1.4.2 states
that all tests -unless otherwise stated, are type tests. Section
5.3.2 does not state otherwise.
Regards:
janos vajda
Reply-to: Egon
Just to keep the record straight, CSA are not the only safety agency requiring
100% production line hipot (electric strength) testing. In fact this is
required by practically all agencies. Many standards, such as 950 and 1010,
have this requirement built right in.
Even if an agency is not
- but some customers and European agencies require it
in certain cases.
Harold Leipold
Internet leipo...@ae.sec.siemens.com
--
From: owner-emc-pstc
To: emc-pstc; Art Michael
Subject: Re: Routine Hipot testing (Status of prEN 50116?)
List-Post: emc-pstc@listserv.ieee.org
Date: Thursday, May
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