Chris, Greetings! You may not even need to perform production line hipot if the unit is a fiber only product. Since the mains are SELV (unless you are shipping to certain Euro Telco's) the only time you should need production line hipot is if you have wired (TNV-2 or TNV-3) interfaces, assuming no other connections to hazardous circuits.
Granted my advice may be flawed as I am used to permanently connected, stationary, restricted access location products that are a far cry from portable equipment as far as safety standards go. Best Regards, Dave Heald Chris Maxwell wrote: > > Hi all, > > I have a question. > > I have a 48VDC powered product which will be hipot and ground continuity > tested off of the production line in order to maintain agency > certification. > > The product uses D-shaped three pin power connector. (Same size as a > DB15, but has three large power pins instead of 15 signal pins). > > When we sell the unit, we pack it with an accessory kit which includes a > 15' cable assembly terminated with the mate to the product's power > connector. So, essentially, we sell the unit with a "DC mains" cable > that we make. > > Now, where should the hipot test be performed? > > Should I make a test cable assembly for the hipot/ground bond tester > which is terminated with the proper connector so that the tester can > plug directly into the chassis? This would essentially test the chassis > only. (because we would use this same test cable for every unit) > > Or---- > > Should I take each unit and connect the DC mains cable to be shipped > with it, then apply the hipot/ground bond probes to the other end of the > DC mains cable? This would test the entire system including the chassis > and the cable. > > In my mind, this question comes up because we are making a custom mains > cable for this DC product. > > It is different than AC products; because, with AC products, we can test > the chassis by itself and assume that the mains cable is OK because we > buy mains cables that have been previously hipot/ground bond tested by > their manufacturers. > > Any words of wisdom? > > Thanks, > > Chris Maxwell | Design Engineer - Optical Division > email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 > 8024 > > NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA > web www.nettest.com | tel +1 315 797 4449 | > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > No longer online until our new server is brought online and the old > messages are imported into the new server. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
