Properly the UL mark should go on last because it doesn't comply until all the processes are complete. However You can apply the mark before hipot but a hipot failure should never occur. A unit that does not pass should be sent back through the process until it passes however many times it takes. You should have a method to control this to make sure a failing unit never ships. Some products have the mark stamped in the metal enclosure before the unit is even assembled so when you put it on is not the issue. The issue is that you never ship a non compliant unit with the UL mark on it. Your MFG or ISO9000 procedures should reflect and control this.
Monty Griffith Test Engineer Intergraph Government Solutions Federal Hardware Engineering Dept. 170 Graphics Drive Madison, AL 35758 Ph: 256 730-4265 FX: 256 730-6816 Email: [email protected] -----Original Message----- From: Dave Wilson [mailto:[email protected]] Sent: Friday, June 01, 2001 11:12 AM To: '[email protected]' Subject: UL Mark Can anybody tell me where it is defined at what point in production it is permissible to apply the UL mark? Can it only be done after the hi-pot has passed? Or is it OK to have the label applied before the test as long as the units are clearly marked as having failed hi-pot? Thanks in advance, Dave Wilson Alidian Networks Inc. ------------------------------------------- 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: http://www.rcic.com/ click on "Virtual Conference Hall," ------------------------------------------- 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: http://www.rcic.com/ click on "Virtual Conference Hall,"
