BAD MSG: [[email protected]] o: [email protected] In-Reply-To: <[email protected]> Message-Id: <[email protected]> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: [email protected] Precedence: bulk Reply-To: [email protected] Status: U X-Mozilla-Status: 8011 Content-Length: 3001
> Subject: RE: BABT analog telco hipot requirements > Message-Id: <54988A310196357C@-SMF-> > In-Reply-To: <"Macintosh */PRMD=MOT/ADMD=MOT/C=US/"@MHS> > Reply-To: [email protected] > References: <"Macintosh */PRMD=MOT/ADMD=MOT/C=US/"@MHS> > > > I mis-spoke in my original email. We actually separate telco return from > the chassis and the AC mains safety/earth ground before doing the hipot test > required by BABT Issue 6 table 1 item 3. Sorry, for the confusion. > > George Seminsky > ------------- > Original Text > >From [email protected], on 5/3/96 2:53 PM: > > I agree with Pete, there is no reason to lift the ac safety ground. > > BABT 340 Table 3 test 4 requires that you measure the insulation resistance > between earth ground and the PSTN ports (min of 5MOhms at a minimum of > 100v). We > combine this test with the Hi-Pot test by using a DC Hi-Pot tester > calibrated to > 2500vDC with a trip current of 0.5mA. This elimates a step in the process > and > the need for a megometer. > > Dave Clement (BABT ALE) > Motorola ISG > _____________________________________________________________________________ > __ > To: [email protected]@INTERNET > From: [email protected]@INTERNET on Fri, May 3, 1996 9:29 AM > > Jon, > > My company also makes telecom equipment for the UK, and we are > required to run a similar test. (See BABT 340, Table 1, item 3.) > However, we are NOT required to lift the ac mains safety ground > connection before running the test. In fact, I fail to see the logic > in doing so, unless the test might damage your power supply. > > Regards, > > Pete > > ______________________REPLY SEPARATOR___________________ > Date: Thu, 2 May 1996 18:55:10 -0400 (EDT) > From: Jon D Curtis <[email protected]> > Subject: RE: BABT analog telco hipot requirements > [[email protected]] > > > > > This question is directed to individuals who have knowledge/experience > with > > shipping product with analog telco ports to the United Kingdom. As long > as > > 4 or 5 years ago, we were instructed by BABT to perform hipot testing > > (1500vac or 2121 vdc) between analog telco inputs and the chassis on each > > production unit. This requires separating the AC mains safety/earth ground > > connection from the chassis. Is this still required? Are other companies > > that sell telco type products to the UK doing the same thing? > > > > I have inquired BABT, but I am hoping for a faster response from TREG. > > > > Thanks, > > George Seminsky > > > ---------------------------------------------------------------------------- > Peter Van Raalte | Email: [email protected] > Compliance Engineer | > V-Band Corporation | Phone: 914-789-5117 > 565 Taxter Road | > Elmsford NY 10523 | FAX: 914-347-3432 > --------------------------------------------------------------------------- >
