Kim, Clause 57.10 (a), second tick states "The value of the reference voltage (U) is as given in Sub-clause 20.3".
I think this is quite clear. Jon Griver http://www.601help.com The Medical Device Designer's Guide to IEC 60601-1 > Hi all > > When determining insulation and creepage/clearance you use a "reference > voltage". > > In § 20.3 (concerning insulation test voltage ) it say that the voltage is > a > arithmetic sum of ex. prim. voltage + sec. voltage. > > (EX.: A PSU fed with 230 Vac and a sec. of 30 Vdc will give 260 V over the > insulation) > > But in §57.10 this method is not described when using "reference voltage" > for creepage/clearance. Would it be OK to use the 230 Vac to determine the > distance ? > > Best regards, > > Kim Boll Jensen > Bolls Rådgivning > Ved Gadekæret 11F > DK-3660 Stenløse > > Tlf.: 48 18 35 66 > Fax: 48 18 35 30 > Mobil: 22 99 69 91 > > E-mail: [email protected] > web: www.bolls.dk > > ---------------------------------------------------------------- > 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/listserv/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: > > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > > http://www.ieeecommunities.org/emc-pstc > 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/listserv/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: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
