Hi Alex, FYI, there is a UL PAG (Practical Application Guideline) related to the acceptability of the use of knurled thumbscrews, assuming the ITE standard for safety (UL 60950-1) is applicable to your product. A subscription is required to access the PAGs, but if you're going to be working with 60950-1, it's probably worth the cost.
I believe the PAG reference number that you might find useful is 1.2.7-1. http://data.ul.com/pagos/ Scott Aldous Compliance Engineer Advanced Energy Tel: 970-407-6872 Fax: 970-407-5872 From: [email protected] [mailto:[email protected]] On Behalf Of John Woodgate Sent: Monday, June 16, 2008 1:31 PM To: [email protected] Subject: Re: Chassis mount PS UL considerations In message <[email protected]>, dated Mon, 16 Jun 2008, Alex Horvath <[email protected]> writes: >To pass UL, I'm guessing that additional shielding will be required to >cover the ring terminals. Are there detailed requirements for this type >of situation or is any reasonable cover/shield acceptable? Rather than puzzle over whether a cover is needed or not to pass UL, as many do, you have made a simplifying assumption that one is needed. I would support that approach. It should be attached in some way, so that it can't be left off by a service technician. It would be good to label it, indicating that live parts are underneath. The material almost certainly needs to be flame-retardant to some degree. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - 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, including any attachments, may contain information that is confidential and proprietary information of Advanced Energy Industries, Inc. The dissemination, distribution, use or copying of this message or any of its attachments is strictly prohibited without the express written consent of Advanced Energy Industries, Inc. - 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
