John, Thanks for your reply.
> >> Is there any other requirement to determine it such as operating >> temperature? > > Not exactly 'determine'. Some standards require parts above a specified > temperature (or temperature rise) to be inaccessible. Can you give me an example or two. Thanks! >> >> Recently we notice there are dielectric strength tests for LED lamps >> and compact FL lamps but no dielectric strength tests required for >> halogen lamps. Actually they all have glass bulb and all are operating >> on 230 Vac. Isn?t glass bulb considered as an accessible parts on >> halogen lamp due to high operating temperature? > > A dielectric strength test is probably not required because any halogen > lamp that is not broken would pass it. With an intact lamp, there are > two layers of insulation - the glass and the vacuum. For double insulation, dielectric strength test is still required in general but it doesn't. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) 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]>
