Ian, Section 3.5 describes the susceptibility of ITE as is displayed in the CBEMA (ITIC) Curve. This is was determined by a consensus of the typical levels of immunity for ITE. Since particular data unique to each manufacturer could be misused, this was the only way for the industry in general to show immunity levels.
Therefore, when looking at ITE and susceptibility levels to EN61000-4-4 or -5, one could assume that the device could withstand surges with a peak voltage and duration as detailed in the chart on pg 48 of IEEE 1100. Using this information, this assumes that an IT device could withstand a peak transient of up to 500% of the line voltage (5 x 120v = 600 vpk transient). This would represent an IT device capable of withstanding the Level 1 (EN61000-4-4 and -5) transient without external protection. Since this graphical data is a compromise of the ITE manufacturers, I would suggest that representative testing still be required to the EN standards to any level greater than Level 1. Finally, the IEEE 1100 document is Recommended Practice. Therefore, it is not mandatory only voluntary. Bryan Cole Director of Engineering Product Safety Officer Emerson Network Power - Control Concepts Binghamton, New York 13902 Phone: 607.724.1352 extension 238 Fax: 607.724.0153 E-mail: [email protected] www.Liebert.com www.Control-Concepts.com www.Edcosurge.com -----Original Message----- From: Gordon,Ian [mailto:[email protected]] Sent: Thursday, November 21, 2002 8:11 AM To: 'IEEE EMC-PSTC GROUP' Subject: IEEE 1100 SECTION 3.5 Group Does anybody know if there is correlation between IEEE 1100 section 3.5 and any of the tests within the EN61000-4-x range? It has been suggested that the IEEE 1100 test and EN61000-4-4 (fast transient testing) were related. The information I have about section 3.5 of the IEEE document indicated it is concerned with power supply failures. Is the document mandatory in any countries or is it an "industry standard"? Thanks Ian Gordon _____________________________________________________________________ This e-mail has been scanned for viruses by the WorldCom Internet Managed Scanning Service - powered by MessageLabs. For further information visit http://www.worldcom.com ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list" NOTICE: This communication includes confidential information that may also be legally privileged. It is intended for the exclusive use of the addressee(s). If you are not the intended recipient, any use, unauthorized disclosure, copying, distribution, or taking of any action in reliance on the contents of this communication is strictly prohibited. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
