Dave, No, you don't need to defeat a certified fan during fault tests. The general rule of thumb in the product safety standards is "one abnormal at a time". You also like to see "reliable" & "repeatable" means for terminating a fault condition (i.e. certified protective device). As such, non-certified temperature controllers/circuits are generally defeated during testing. Same for traces on PCB's that fuse open unless they are certified links. So this may be applicable to your locked rotor test.
Fans are typically certified and I have never seen or heard of fault tests being done with the fan defeated, at least for Certification purposes. Regards, Bill Bisenius E.D.& D. bi...@productsafet.com www.productsafeT.com -----Original Message----- From: drcuthb...@micron.com [mailto:drcuthb...@micron.com] Sent: Wednesday, September 17, 2003 11:16 AM To: emc-p...@ieee.org Subject: fan question Question: During a "locked fan rotor" test do other single-faults have to be invoked? Dave Cuthbert Micron Technology This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
