All EN 61010-1:2001, Section 9.3 Limited-energy circuit states that one of the criterion for a circuit to be deemed a limited energy circuit : b1) the maximum available current is limited inherently or by impedance so that it cannot exceed the relevant value of table 13;
Looking at Table 13 for a DC voltage of between 20 - 30V(inclusive) the maximum available current is 8A. What does the maximum available current of 8A as it does not state whether this is 8A average, peak or rms and also how it is measured, i.e. is it measured with a DMM or current probe/scope? Similarly in UL508C, section 29 Risk of Fire and section 31.4 Limited voltage/current requirements: in regards to whether a circuit is deemed to have a "risk of fire", the clause states that the current available should not exceed 8A. Again is this 8A peak, average or rms and how can we measure it? Ian Gordon The contents of this email and any attachments are confidential and are provided solely for the use of the intended recipient(s). If you are not the intended recipient, you are hereby notified that any copying, disclosure, distribution, or use of this e-mail, its attachments or any information contained therein is unauthorised and strictly prohibited and you should please contact the sender immediately and delete this e-mail and any attachments from your system. No responsibility is accepted for any virus or defect that might arise from opening this e-mail or attachments, whether or not it has been checked by anti-virus software. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
