Doug - This was not so uncommon a few years ago. For instance, a rack mount computer at one time could not be UL Listed and were only allowed to be UL Recognized Components, based on the uncertain use environment (elevated internal rack temperatures). At the same time, obtaining European certification meant the full gamut of requirements applied. I've heard tale that TUV-R refused to issue Bauart licenses for them.
Circa 1992 or 3, UL decided this was too onerous on manufacturers and proposed allowing rack mounted computers to be Listed, provided they provide adequate instructions for installation and maximum rack ambients. Recognition is still an option and at the manufacturer's discretion. All sorts of other reasons can force a product towards Recognition, rather than Listing, most of which, I'm confident you can envision. Something incomplete in the evaluation or based on a construction feature. Among them, hard wired and without a fully compliant NEC compliant field wiring means of connection to the supply. Even if intended for an RAL, not meeting Code requirements can spell doom. (You didn't mention the intended supply wiring method.) Do the CofAs not contain anything unusual? Regards, Peter L. Tarver, PE Product Safety Manager Sanmina-SCI Homologation Services San Jose, CA peter.tar...@sanmina-sci.com > -----Original Message----- > From: Doug McKean > Sent: Wednesday, October 09, 2002 8:44 AM > > In 20 years, I've never seen this before but > that's not saying much. > > Why would a mfr get a UL recognition approval for > a commercial > ITE style single phase 155-230vac computer style > product but for > that same product get the TUV "GS" mark? > > Mfr is a stateside company. > > Product to be used in restricted areas with > trained personnel only. > But, one that essentially anyone could buy. > > What's the advantage of getting such a mixed set > of approvals? > I would assume such a thing would normally get a Listing. > > Maybe turning the question around for our > overseas friends - > why would you get a GS mark for your product but only get > UL recognition for an ITE computer product when > it's normal > to get a listing for such a product? > > Regards, Doug (scratching head...) ------------------------------------------- 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: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com 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: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
