Nothing I say represents the policy of my employer, or any specific findings by my employer.
There have been two different models, used in two different products, RMA'd from the good people in Australia, where the failure mode could not be reproduced through component fault or abnormal operating condition, until we applied surges at test levels intended for equipment well beyond the rated installation category. One of the problems was fixed by changing the TVS to one rated for higher J. I do not know which area of Australia these units were located, and do not know if the input was just over-voltaged, or if it was hit by a lighting surge. luck, Brian From: [email protected] [mailto:[email protected]]On Behalf Of Goedderz, Jim Sent: Wednesday, June 04, 2008 12:15 PM To: [email protected] Subject: Australia power grid Group, We have some indirect evidence, and some damaged product, that appears to be related to over voltage on the power grid in Australia. The nominal is 240V 50Hz, but we are hearing accounts of voltages as high as 285V. Has anyone else had to deal with damaged product, or can confirm that sections of "down under" may occasionally be running well beyond normal tolerance? Thank you. James Goedderz Product Safety Engineer Tyco/Sensormatic 561.912.6378 - 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
