Thanks, Brian.
I recall now. I used hexamine tablets. I used two sizes, one about ½ inch diameter and ¼ inch thick, and the other about the size of an aspirin tablet. I placed the hexamine on top of the component I expected to catch fire, ignite the pellet, put the enclosure back on, and film the results. We were using HB enclosure material for a product using an external power supply (limited-power, low-voltage). The standards say this construction is acceptable. Nevertheless, a component could overheat and burst into flames. So, we tested for spread of fire through the use of the hexamine tablet. Where the tablet caused the HB enclosure to burn, we used NOMEX sheet insulating paper to prevent the flames from touching the HB plastic. Rich - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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 <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
