Sorry, I found it in the IEC61000-4-5 2nd Ed, 2005-11, clause 8.2 Ralph McDiarmid, AScT Compliance Engineering Group Xantrex Technology Inc
From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, October 19, 2006 12:29 PM To: [email protected] Subject: RE: IEC 61000-4-5 and phase angles I believe that most standards only call for 0, 90 and 270 degrees. IEC 61000-4-5 requires testing at "the zero-crossing and the peak value of the a.c. voltage wave (positive and negative)." In what standard are you finding a reference to 180 degrees? Ted Eckert American Power Conversion Corporation The items contained in this e-mail reflect the personal opinions of the writer and are only provided for the assistance of the reader. The writer is not speaking in an official capacity for APC nor representing APC's official position on any matter. "Ralph McDiarmid" <ralph.mcdiarmid@ xantrex.com> To Sent by: <[email protected]> [email protected] cc Subject 10/19/2006 01:32 RE: IEC 61000-4-5 and phase angles PM Does anyone know of a sound technical reason why the IEC surge standard calls for pulses to be applied at 0, 90, 180 and 270 degrees of the AC voltage? If one tests at 0 degrees, isn't the 180 degrees phase-angle redundant? Ralph McDiarmid, AScT Compliance Engineering Group Xantrex Technology Inc - 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 - 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 - 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 ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
