As Mr. Woodgate noted, there are two choices; electronic variable voltage/variable frequency power supplies and motor-generators. The electronic supplies can get very expensive at higher power ratings, but are more reasonably priced for output ratings under 500 W. Be careful how you use them. They are switch-mode supplies, so there can be a lot of noise on the output. Depending on the testing, you may need output filtering or even an isolation transformer. Their advantage is that you can vary the frequency quite easily. Motor-generator sets are good for high-power testing. Simple fixed-frequency output versions are easy to get. Variable frequency output requires some type of internal transmission more sophisticated than belts and pulleys. The following list is a subset of vendors for these products. It is neither an endorsement of these brands nor should it be seen as a rejection of any vendor not listed. It is only the existing list that I happened to have handy on my computer. http://www.absopulse.com/ http://www.behlman.com/ http://www.calinst.com/ http://www.chromausa.com/ http://www.elgar.com/ http://www.falconups.com/ http://www.kikusui.co.jp/ http://www.novaelectric.com/ http://www.pacificpower.com/ http://www.pacificpower.com/ http://www.50hz.com/ Ted Eckert The opinions expressed my own and are not necessarily those of my employer.
--- On Wed, 8/20/08, [email protected] <[email protected]> wrote: From: [email protected] <[email protected]> Subject: Testing EUT at 110V 60 Hz and 220V 50 Hz To: [email protected] Date: Wednesday, August 20, 2008, 1:10 PM Hi all, How and what do United States labs typically do (use) to power EUTs that run at 110V 60 HZ and at 220V 50Hz. Also are there other power voltage/frequency combinations I should be considering besides those two mentioned. Thanks, Cody Miller - ---------------------------------------------------------------- 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 - ---------------------------------------------------------------- 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
