Not sure I understand what a "zener barrier" is, but if you mean there are zener diodes across the line or even in series with the line, this has no bearing on the applicability of 61000-4-5.
IEC 61000-4-5 is a method of surge testing a product without regard to the signal line type, data, construction or anything else. It simply assumes all products are "black boxes" with inputs and outputs for power and data. There are problems with surge testing I/O lines -- couplers that don't work on lines with high data rates, etc.... but these issues will be dealt with in future revisions (don't hold you breath waiting... the process of revision has just begun in my Working Group and it will probably be a few years before any published revisions appear!). Best Regards, Michael Hopkins Convenor IEC TC77B WG11 > -----Original Message----- > From: Westin, Amund [SMTP:[email protected]] > Sent: Thursday, May 11, 2000 4:15 AM > To: 'emc-pstc' > Subject: EMC vs. Exi equipment > > > Hello members, > > One question, what's common practise regarding surge test (EN61000-4-5 > on signal lines) on lines which contains zener barriers ? Have a feeling > that the surge test is not applicable..... > > Comments ? > > Best regards > Amund Westin > Det Norske Veritas > * [email protected] > > > > > ********************************************************************** > Neither the confidentiality nor the integrity of this message > can be guaranteed following transmission on the Internet. > This message has been swept by MAILsweeper at DNV for > the presence of computer viruses. > ********************************************************************** > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: [email protected] > Michael Garretson: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
