Chris, I can think of several reasons:-
1. It provides an objective assessment of safety for general product safety / product liability considerations. You will have demonstrably demonstrated due diligence. 2. With the Ethernet and modem connections and the obvious possibility of being connected indirectly to a telecommunications network, it can be used to meet the requirements of the R&TTE Directive, which applies the LVD without voltage limitations. 3. As an obvious extension of a item of ITE, it will allow you to demonstrate that it also meets the requirements of the ITE safety standard. The assessment should be fairly straightforward as many sections will be 'Not Applicable' since you have no mains circuits. In essence you will just be assessing it as a secondary circuit, probably minimum creepage and clearance dimensions that your CAD system can check for you, and flammability of PWBs and any plastics. Best regards Neil R. Barker CEng MIET FSEE MIEEE Manager Quality Engineering e2v technologies (uk) ltd 106 Waterhouse Lane Chelmsford Essex CM1 2QU UK Tel: (+44) 1245 453616 Fax: (+44) 1245 453571 Mob: (+44) 7801 723735 P Please consider the environment before printing this email. From: Chris Wells [mailto:[email protected]] Sent: 13 February 2007 22:03 To: [email protected] Cc: [email protected] Subject: Re: LVD voltage level exception rule John - yes it will be used in automation and power distribution gear. Some of our devices are EN61010-/UL61010 and I suppose that would be better. Even so that standard recognizes EN60950 for the LAN/WAN and telecome detail. But regardless of the European standard choosen the LVD topic still is my issue. Is there reason why the product should be reviewed despite the 24VDC rating? Thanks Chris Wells ----- Original Message ----- From: <[email protected]> To: "Chris Wells" <[email protected]> Cc: <[email protected]> Sent: Tuesday, February 13, 2007 7:47 AM Subject: Re: LVD voltage level exception rule > Chris, > > UL508 is for "Industrial Control Equipment". Do you have plans to sell the > said product as an > Information Technology Equipment in the EEA? If the product is intended > for use in an > industrial environment, as some kind of controller, EN60950 would not be > the best choice. > > John Radomski > Principal Engineer > Schneider Automation Inc. > > > > > "Chris Wells" > <radioactive55man@c To: > <[email protected]> > omcast.net> cc: > Sent by: Subject: LVD voltage > level exception rule > [email protected] > > > 02/13/2007 07:04 AM > > > > > > I am looking for help rationalizing when a product must be evaluated to > the LVD. > This is for a product my company is considering namebranding. > I would like to see the product evaluated to EN60950 but the vendor is > arguing that due to the > 24VDC, low voltage rating the product does not need to be formally > evaluated to an European > safety standard to claim the CE mark. The product does meet UL508. > > Background - The product is a communication gateway with the following > ports: > DC power in put 24VDC ~ 10W (not internally fused) > Ethernet, Cat5 RJ45 twisted pair LAN/WAN interface > RS485 multipoint subnetwork (Modbus, cable up to ~ 4K') > Proprietary twisted pair multipoint network similar to RS485 (cable > up to 10K') > RS232 port for connecting to external modem like devices > USB slave - temporary programming port > Modem Interface - optional (not found on all models) > In my view the Modem interface is very hazardous and so the product should > be formally > evaluated. > Since the modem interface is a USA version perhaps this model could be > excluded from having a > CE mark. > Anything else stand out as requiring evaluation to EN60950? > > Also I remember reading that this voltage limit exception topic is under > review. > > Thanks > > Chris Wells > [email protected] > > > > ________________________________________________________________________ > This email has been scanned for SPAM content and Viruses by the MessageL > abs Email Security System. > ________________________________________________________________________ > - ---------------------------------------------------------------- This > message is from the > IEEE Product Safety Engineering Society emc-pstc discussion list. Website: > http://www.ieee-pses.org/ > > > To post a message to the list, send your e-mail to [email protected] > > > Instructions: http://listserv.ieee.org/request/user-guide.html > > > List rules: http://www.ieee-pses.org/listrules.html > > > For help, send mail to the list administrators: > > > Scott Douglas [email protected] Mike Cantwell [email protected] > > > For policy questions, send mail to: > > > Jim Bacher: [email protected] David Heald: [email protected] > > > All emc-pstc postings are archived and searchable on the web at: > > > http://www.ieeecommunities.org/emc-pstc > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. Website: http://www.ieee-pses.org/ > > To post a message to the list, send your e-mail to [email protected] > > Instructions: http://listserv.ieee.org/request/user-guide.html > > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > > Scott Douglas [email protected] > Mike Cantwell [email protected] > > For policy questions, send mail to: > > Jim Bacher: [email protected] > David Heald: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc > - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
