All I’d be interested to hear views on the use of Class A EMC emission limits for equipment that is intended for use in non-domestic (commercial, light industrial) properties; I’m only concerned with the EU situation here.
More than one well known manufacturer of test equipment (e.g. oscilloscopes) declares it as EN 61326-1 Class A, with instructions that the item is only intended for use in non-residential areas. Such equipment is often used in workshops, laboratories and service centres, which along with residential properties are listed in EN 61326-1 as examples of a "basic electromagnetic environment", defined as “locations characterized by being supplied directly at low voltage from the public mains network”. EN 61326-1 defines Class A equipment as "equipment suitable for use in all establishments other than domestic and those directly connected to a low voltage power supply network which supplies buildings used for domestic purposes" Is it OK to employ Class A limits for professional test or laboratory equipment even when it will likely be connected to a public mains supply? I realise that EN 55032 only requires Class B for equipment that is intended primarily for use in a residential environment (and for broadcast receivers) and stipulates Class A elsewhere, but most other standards tend to group commercial and light industrial together with residential, and permit Class A only in (heavy) industrial environments. So in what scenarios can Class A limits, in conjunction with a “not for use in residential environment” instruction, be legitimately used for products intended for use in non-residential properties that are typically fed from the public mains supply? Best Regards Chris - ---------------------------------------------------------------- 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]>
