Rich - Notwithstanding your statements about the safety insulation needing to meet the testing, I have always viewed the testing with the SPC removed or disabled to be an allowance, since in almost every instance, will cause a false indication of breakdown of the safety insulation by means of fulfilling their intended functions.
This view is similar in concept to allowing a dc test when capacitances will allow "excess" currents to flow during the same tests. Your answer sells better in committee. Peter Tarver > -----Original Message----- > From: Richard Nute > > Hi Joe: > > > Very quickly... > > SPDs are not considered reliable components or > assemblies. > The safety standards anticipate a failure -- anywhere > from open-circuit to short-circuit. > > In the event of an open-circuit, there is no indication > of such a failure. And, of course, all transients then > pass through the open SPD. > > Consequently, the equipment safety insulations will be > called upon to withstand the expected transient > overvoltages. > So, the standards require performing the voltage > withstand test without the SPD in place. > > > Best regards, > Rich This email message is for the sole use of the intended recipient(s) and may contain confidential and/or privileged information. If you are not an intended recipient, you may not review, use, copy, disclose or distribute this message. If you received this message in error, please contact the sender by reply email and destroy all copies of the original message. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ 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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
