All, This is mainly a curiosity question.
I have used overvoltage categories routinely for many years for LV products and now it seems to me that there must be something analogous to this on the MV side of a utility transformer. Certainly I do not think the OV Cat Roman numeral system of 60664-1 is appropriate. Or is it simply expressed in kV peak and the impedance of the transformer is used to determine expected impulse on a secondary winding, as in arc-flash calculations? Can anyone point me in the right direction to learn more? thanks, -doug -- Douglas E Powell http://www.linkedin.com/in/dougp01 - ---------------------------------------------------------------- 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 <emc-p...@ieee.org> 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 <emcp...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
