The operating voltage alone does not determine what flame rating is required for polymeric enclosures. You also have to consider items such as the available power and the presence of potential ignition sources. Generally, the product standard will provide a method for determining what flammability rating is required for the enclosure. If your product falls under IEC/UL 60950-1, see sections 4.7.2 and 4.7.3.
The flame rating of a plastic is not necessarily the only attribute that you will want to control. UL 746C will provide guidance on selecting other material properties for polymeric enclosures. http://ulstandardsinfonet.ul.com/scopes/scopesnew.asp?fn=0746C.html Regards, Ted Eckert Compliance Engineer Microsoft Corporation [email protected] The opinions expressed are my own and do not necessarily reflect those of my employer. From: Robert Macy [mailto:[email protected]] Sent: Tuesday, August 10, 2010 9:45 PM To: [email protected] Subject: When does UL94V0 apply? When, or rather on what products, does the UL94V0 burn test apply? If the electronic product is battery powered with less than 5V, must it meet this rating? If the battery is Li? Product is portable, contains GPS receiver, and has a 2.4 RF modem. Any 'gotcha' requirements should be aware of? - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]> - 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.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]>
