A number of inlets have provision in their design for double pole fusing but can be purchased configured as single pole fused devices. In this configuration this does provide a convenient location to supply a spare fuse. Over the years we have frequently done this on our products.
Regards, Chris _______________________________________________ Chris James Engineering Services Manager Dolby Laboratories, Inc. (UK) Direct: 01793 842136 -----Original Message----- From: Crabb, John [mailto:jo...@exchange.scotland.ncr.com] Sent: 22 July 2002 16:04 To: emc-p...@majordomo.ieee.org Subject: RE: IEC60320 I have never heard of an inlet with provision for a spare fuse. Are you sure it wasn't a double pole fused inlet ? (SOME PEOPLE say double pole fusing is a requirement of IEC 60950, "but it ain't necessarily so"). Regards, John Crabb, NCR Financial Solutions Group Ltd., Discovery Centre, 3 Fulton Road, Dundee, Scotland, DD2 4SW E-Mail :john.cr...@scotland.ncr.com Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. -----Original Message----- From: Mark Schmidt [mailto:mschm...@xrite.com] Sent: 22 July 2002 14:28 To: emc-p...@majordomo.ieee.org Subject: RE: IEC60320 Oops, I seem to left the problem out. The manufacturer now puts a rib in the spare fuse holder so you cannot put a spare fuse in. Sorry for the confusion. Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com -----Original Message----- From: Mark Schmidt Sent: Monday, July 22, 2002 8:46 AM To: emc-p...@majordomo.ieee.org Subject: IEC60320 Is anyone familiar with IEC60320? We use an AC input module that includes a power switch and fuse holder. The fuse holder is a separate piece that is inserted in the module it also allowed storage for a spare fuse. In our product we shipped them with a spare fuse in order to benefit the customer in case they needed it. The intent was that in case they did blow the fuse that they would have an identical and properly rated replacement fuse available to them. This would hopefully eliminate or reduce the risk of putting an improperly rated fuse in the module. I received a letter from the manufacturer indicating that the design change was made in order to comply with IEC60320. It seems to me that we have now introduced a additional risk, it just doesn't make sense to me. Any comments? Mark Schmidt Regulatory Compliance X-Rite Incorporated USA (616) 257 2469 mschm...@xrite.com <mailto:mschm...@xrite.com> ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. 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