From the link suggested below. “In some cases they may be completely adequate in themselves for use with particular products and may be used for product certification. This in turn relieves a product committee from developing a new standard and is very much in line with the IEC's forward-looking approach to its EMC work.”
From the scope of EN6000-6-1 “This generic EMC immunity standard is applicable if no relevant dedicated product or product-family EMC immunity standard exists” So if no product standard exists use EN6000-6-1, but I would use the product standard if it is available, for example for ITE, audio and video there is 66032 emissions and sometime in the future 66035 (I think) will describe the immunity requirements for those products in their typical environments. Really the difference between the two is the analysis done by the standards groups on what is or is not appropriate for that product usage. I don’t have any real argument with Bill’s over-test to protect yourself, but there is a time and cost associated with that in production entry, including test fees, to unit cost if unnecessary components are shipped with every product. So choose wisely but take advantage of the standards writers knowledge that may exist for your product classification. From: Rajneesh Raveendran [mailto:rajneesh.raveend...@seagate.com] Sent: Wednesday, January 13, 2016 8:10 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [EXTERNAL] Re: [PSES] Generic EMC Precedence over Basic Standards and Fast Transient and Surge Immunity Questions Hi Philip, The precedence is EMC product standards --> Generic EMC standards --> Basic EMC publications. The Basic EMC publications act as building blocks for Generic EMC standards & EMC Product standards. The Generic EMC standards act as building blocks for EMC Product standards. You can get more info at the link - http://www.iec.ch/emc/basic_emc/<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.iec.ch_emc_basic-5Femc_&d=CwMFaQ&c=0hKVUfnuoBozYN8UvxPA-w&r=RJLDFgHJo89sjFN46b74hFXEuxvz4Z1iAx-glaOgP0k&m=VibP97W6LAszY9kb7LpCoQE-_W9HMO-YhJ-ZFJU9VZg&s=mYzXBD38H8OMs6m9RdxoxBbS6MMCDNRYaC4h21QW1Hg&e=> Regards, Rajneesh On Thu, Jan 14, 2016 at 6:49 AM, Philip Stevenson <pw...@hotmail.co.uk<mailto:pw...@hotmail.co.uk>> wrote: Dear List Members The Generic EMC Immunity Standard BS EN/IEC 61000-6-1 references a number of "Basic Standards" which are associated with each of each of the EMC Immunity Test Requirements. I have been advised that the Generic EMC Immunity Standard BS EN/IEC 61000-6-1 test requirements have precedence over the referenced "Basic Standards". Is this correct? My reason for asking relates to the Generic EMC Immunity Standard BS EN/IEC 61000-6-1 Surge and Fast Transient Immunity Test Requirements for a DC Power Input of a product. This test requirement references "Basic Standards" IEC 61000-4-5and IEC 61000-4-4 in Table 3. The following questions relate to a product which is powered from a 28V dc output from a 230V ac Mains Powered COTS DC Power Supply. Surge Immunity Question: The Generic EMC Immunity Standard BS EN/IEC 61000-6-1 Table 3 Surge Immunity Test Requirement refers to Basic Standard IEC 61000-4-5. As previously stated the Product is powered from a 28V dc output from a 230V ac Mains Powered COTS DC Power Supply via a shielded cable assembly which is less than 10 metres in length. In the Basic Standard IEC 61000-4-5: 2014 Section 7.6 it states that "No test shall be required for cables according to the manufacture's specification are less than or equal to 10 metres." Whereas the Generic EMC Immunity Standard BS EN/IEC 61000-6-1 Surge Immunity Test Requirement caveat "c" states that "Apparatus with a DC power input port intended for use with a AC-DC Adaptor shall be tested on the AC power input to the AC-DC Adaptor". As the products DC power input cable assembly is shielded the Basic Standard implies no testing is required. Whereas the Generic EMC Immunity Standard implies the AC power input to the COTS DC Power Supply needs to be tested. My question is which of these test requirements has precedence? Fast Transient Question: The Generic EMC Immunity Standard BS EN/IEC 61000-6-1 Table 3 Fast Transient Immunity Test Requirement caveat "d" states that "Apparatus with a DC power input port intended for use with a AC-DC Adaptor shall be tested on the AC power input to the AC-DC Adaptor". I have been advised that the Fast Transient Immunity test needs to be performed on the DC Power Input cable. My question again is which of these test requirements has precedence? I would be grateful for any advise or guidance the members can provide on these matters. If you prefer to reply to me be directly instead of via the list my personal Email address is pw...@hotmail.co.uk<mailto:pw...@hotmail.co.uk>. Regards Philip Stevenson - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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