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
RERoutine Hipot testing5/6/96
Be aware that when doing manufacturing floor testing, the 1 second test is for
levels 20% higher (AC or DC). IEC 950 also states 3000VAC + 20% for
re-inforced. ( 1sec)
Regan Arndt
Safety Technologist
Nortel, Calgary
Reply to: RERoutine Hipot testing
Janos,
Try using the BI-NATIONAL (CSA C22.2 No. 950/UL 1950) of July 28, 1995, page
124.
Note 1 is below the 2nd paragraph, and is verbatim of IEC 950:1995, Amend. 3,
page 207.
Naftali Shani
Nortel Technology
naftali.sh...@nt.com
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
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