Peter, As someone who rates their products the same (well, without the label/manual discrepancy), I can say with confidence that the product is TNV-2 due to input supply deviations (60V ± a few). This isn't really as bad as it sounds, though, as the only real issue you will have is maintaining 1mm spacing around the TNV-2 circuits. Bridging components must also be of sufficient (Basic, I think, but I didn't check just now) insulation ratings, but even if they fail, the only requirement is that no more than TNV-2 voltages be present on secondary circuits or ground.
Best Regards, Dave Heald -----Original Message----- From: Peter Merguerian [mailto:pmerguer...@itl.co.il] Sent: Wednesday, October 16, 2002 11:22 AM To: "EMC-PSTC (E-mail)" < Subject: 48/60 Vdc Centralized Office Equipment Dear All, I have a client who insists on a 48/60 Vdc (slash) rating and wishes to consider the input to be SELV. He states in the manual the operating voltage tolerance 36-60 Vdc. In this case that the manufacturer specifies the tolerance in their manual, will the CO operators consider the 48/60 Vdc rating a SELV input; or a TNV-2 input because the float voltages on the nominal 60 Vdc supply can reach 72 Vdc - ie disregarding the specs in the manual? This e-mail message may contain privileged or confidential information. If you are not the intended recipient, you may not disclose, use, disseminate, distribute, copy or rely upon this message or attachment in any way. If you received this e-mail message in error, please return by forwarding the message and its attachments to the sender. PETER S. MERGUERIAN Technical Director I.T.L. (Product Testing) Ltd. 26 Hacharoshet St., POB 211 Or Yehuda 60251, Israel Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019 Mobile: + 972-(0)54-838175 http://www.itl.co.il http://www.i-spec.com ------------------------------------------- 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" ------------------------------------------- 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"
