> Greetings to all, Hello Brian,
> > In EN61010-1 section 10 ... there are surface > temperature limits specification for Normal Condition based on an Ambient > Temperature of 40ºC. Not exactly right. Referring to 10.4 you can see that maximum surface temperatures can be calculated by "measuring the temperature rise under reference test conditions and adding this rise to 40ºC, or to the maximum RATED ambient temperature if higher." I point this out because it is clear that an increase of the rated ambient temperature is explicitly addressed while the lowering of the maximum ambient temperature is not addressed. It is not necessary to address a lowering of the maximum rated ambient temperature in 10.4 since this standard applies to equipment designed to be safe at an ambient temperature of 40ºC as indicated in sub-clauses 1.4.1 and 1.1.1. For reference, 1.1.1 clarifies equipment included in the scope which in turn refers to: 1.4.1 Normal environmental conditions This standard applies to equipment designed to be safe at least under the following conditions: a) ... b) ... c) temperature 5°C to 40°C d) ... Best regards, Matt To: [email protected] Cc: [email protected] 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] 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
