I've been down this road . . . The power supply will have to go through the approval process too, including multiple samples of the magnetics, providing drawings, etc . . . You will also have to a) have the manufacturer put a 'freeze' on the design of the unit (it's now a 'custom unit' for you) OR b) have them update you on all the engineering changes and you have to coordinate the changes with UL. It's painful process in either regard. It'll be easier to have the manufacturer hold the approval and let them be responsible for it.
Just my opinion . . . John Juhasz Fiber Options Bohemia, NY -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Friday, September 07, 2001 9:08 AM To: [email protected] Subject: UL approval IT equipment What about this one: We want our IT product to be UL approved. We purchase a modified power supply (PS) which is not UL appoved. The original PS is UL approved. The only difference in the PS is the value of one resistor which means that we now can take 2.3A/28VDC out instead of 1.9/28VDC. It exist av TUV CB report on the original PS. A local test lab tells us that thay can approve the total IT product (including the PS), but I feel we can get trouble with UL during the audits (4 times a year). Am I right ? Best regard Amund Westin, Oslo/Norway -- Get your firstname@lastname email for FREE at http://Nameplanet.com/?su ------------------------------------------- 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] 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.
