Just to give you an idea of how we handled this in 60601-1-2, we said: The time between discharges shall have an initial value of 1 s. Longer time between discharges may be required in order to be able to distinguish between a response caused by a single discharge and a response caused by a number of discharges. That is, each discharge should be evaluated independently. The time between them must be considered based the type of equipment being tested. Hope this helps and is WG13's implementation of this problem.
Jim -----Original Message----- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Michael Hopkins Sent: Thursday, August 02, 2001 6:48 AM To: am...@westin.org; emc-p...@majordomo.ieee.org Subject: Re: ESD - time between successive discharges Seems to me the time between discharges is the same as the time between pulses (I believe that was the intent). I don't have the standard in front of me, but I think the max rate was 1/second, which means you could go slower. In most tests I've seen, the several discharges at one point are run at the 1/second rate, but then there could be several seconds or more between the discharges at that point and the discharges at the next point. At least one company actually runs tests at much higher discharge rates and with many more shots/point than IEC recommends (the new draft of ANSI C63.16 goes to 50 shots/per point). Michael Hopkins Thermo KeyTek ----- Original Message ----- From: <am...@westin.org> To: <emc-p...@majordomo.ieee.org> Sent: Wednesday, August 01, 2001 4:06 PM Subject: ESD - time between successive discharges > > Dear members, > > From IEC61000-4-2 and several EN-product standards, they specify the time > between successive discharges to be at least 1 second. > > But what is the maximum time between each pulse ? I can not see that it is > stated in any standards. I guess the test labs use 1 pulse pr second. > > I feel that the pulse rate can have influences on the EUT performance, so 1 > second compared to 3-5 seconds might be the difference between PASS and FAIL. > > Any suggestions ? > > Best regards > Amund Westin > Oslo, Norway > > -- > Get your firstname@lastname email for FREE at http://Nameplanet.com/?su > > ------------------------------------------- > 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: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > http://www.rcic.com/ click on "Virtual Conference Hall," > ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall," ------------------------------------------- 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: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"