Hi Rich, Thank you for your patience. Acknowledged on my choice of wording.
No more clarification need on this. Thank you. Best regards, Ron Pickard Regulatory Compliance Engineer Compound Photonics D | +1 (602) 883-8039 From: Richard Nute [mailto:[email protected]] Sent: Monday, October 26, 2015 3:58 PM To: Ronald Pickard <[email protected]>; [email protected] Subject: RE: [PSES] EN 62368-1 query Hi Ron: >But, a capacitor charged to such an open-circuit voltage need to also be rated >for that voltage (probably a DUH moment). Correct? Yes. >Is Table 2 of IEC 61201:1992 equivalent to Table A.2 of IEC 61201:2007? Yes. >ECMA 287 Table 3.4 ES1 values decrease from 60 V instead of increasing from 60 >V from IEC 62368-1 Table 5 ES1 values. In ECMA 287, Table 3.4 is ordered by capacitance, while IEC 61201 is ordered by voltage. The ES1 voltage values in ECMA 287 "are derived from Table 2 of IEC 61201" and are not the values in IEC 61201. IEC 62368-1 uses the table verbatim. >So, the purpose of 5.2.2.3 is intended to apply to those capacitors in which >their charged voltages are exposed in ES1 circuits during normal operating >conditions and become exposed in ES2 circuits only after a fault? Yes, although I would use the word "accessible" as, in the IEC, the word "exposed" has a different meaning. (ES1 is not necessarily a circuit, but a voltage with respect to ground from 0 to 42.4 or a current to ground from 0 to 0.5 mA.) Need any more clarification? Best regards, Rich - ---------------------------------------------------------------- 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]>
