If anyone has posted a reply to this without copying me, I may have missed it, since I had "vacation mode" turned on to avoid sending Out of Office messages to everyone. I have now turned vacation mode off again, but please re-send to me off-line if indeed you had replied without copying my personal e-mail address.
Thanks, Jim Eichner, P.Eng. Compliance Engineering Manager Xantrex Technology Inc. e-mail: [email protected] web: www.xantrex.com Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. _____________________________________________ From: Jim Eichner Sent: Monday, June 16, 2008 5:48 AM To: [email protected] Cc: Jim Eichner Subject: IEC/EN 60664-4 - Insulation Coordination for frequencies over 30kHz Does anybody have any background on what drove the writing of 60664-4? I am on TC22 PT5 writing a safety standard for power electronics, and we are wondering if the -4 requirements were driven by real-life issues (breakdown of clearances, tracking across creepage distances, etc.) with application of existing (ie 60664-1 based) requirements on higher frequency circuits? Or did this standard get written out of a theoretical basis, in the absence of real-life issues? If there is a track record of real-life issues, the follow-on question is whether those issues manifest in the lower frequencies of the broad range of 60664-4 (which goes from 30kHz to 10MHz), since power electronics would typically use only the low end of that range, up to perhaps 1MHz. Thanks in advance, Jim Eichner, P.Eng. Compliance Engineering Manager Xantrex Technology Inc. e-mail: [email protected] web: www.xantrex.com Any opinions expressed are those of my invisible friend, who looks just the same at 29kHz has he does at 31kHz. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. - 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
