lfresea...@aol.com wrote: > > Brian, > > I'm not sure that I agree with you on your TCF statement. Our TCF's reference > Harmonized documents, when these change I'm expecting that we will have to > update our TCF for what ever changes are introduced. > > You don't agree? > > Derek.
Derek With the TCF route to compliance you demonstrate in the evidence contained within the file that the apparatus meets the protection requirements of the Directive. This means demonstrating that the product does not emit at a level which would cause disturbance to other apparatus or services in its environment, and that it is sufficiently immune to disturbances which exist in that environment. This may mean that the TCF covers more immunity phenomena than might be covered in a harmonised standard, or as in the example given in my earlier posting, less. The requirements applied may also be different. It depends on the apparatus and the environment. Unless the apparatus or the environment change, the TCF remains valid. The use of harmonised standards in part, or any other standards, does not change these concepts. Of course if you meet a relevant harmonised standard in full, then the TCF does not need to cover that aspect. The Commission Guidelines, in Section 8.2 state "... the technical report or certificate [issued by the Competent Body] should be limited to a report or certificate that the procedures carried out for the conformity assessment of those parts not covered by applied harmonised standards have been correctly performed ..." Those EMC aspects covered by harmonised standards, and not the TCF, would indeed need to be reconsidered if one of those standards is changed, because that part of the EMC compliance has been demonstrated via the standards route. I hope that this helps. Best wishes Brian Jones EMC Consultant and Competent Body signatory --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, j...@gwmail.monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
