Dear Listing Members Dear CE Marking Association
We are currently carrying out an EMC Directive assessment of one of our Vehicle Mounted Military Systems against the Generic EMC Standards for Industrial Environments. It is a dc powered standalone Military System with no external Signal Port Input or Output connections. It does have one external DC Input Port whose sole purpose is for charging the system batteries when the system is not in service. The length of the system battery charging cable is < 3m. In normal operation this external DC Input Port is not used. The Vehicle Mounted Military System consists of a number of sub-systems connected via fully screened interconnection cabling some of which are longer than 3 metres but all are much less than 30 metres long. The interconnection cabling is in some cases a combination of both signal and dc power connections but there are also some solely signal cables and dc power cables as well. My question relates to whether the EN 61000-6-2 Signal and DC Power Ports Radio-Frequency Common Mode test requirements are applicable to the sub-system interconnection cabling whose length is greater than 3m or not? Noting as previously stated the system has no external cable connections in normal operation. I am aware that DC Power connections do not have any cable length exemptions but in a standalone system this would not be considered to be a “DC Distribution Network”. Your advice on this matter would be greatly appreciated. Regards Philip Stevenson Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 - ---------------------------------------------------------------- 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 <[email protected]> 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://www.ieee-pses.org/list.html (including how to unsubscribe) 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]>
