Hi Reg
I would thought that any standard isolation transformer would do the job. We have one (230V) in its yellow enclosure but we don’t use it during surge testing. However, if you are doing phase to phase surges, is an isolation transformer going to provide full isolation? It will certainly work for line to earth which may be your primary concern. The 61000-4-5 surge coupling networks are supposed to use 20 mH with large capacitors to ground. In practice the manufacturers use 2 mH chokes which appear to provide adequate protection and impedance control. This will protect your lab mains supply for phase to earth or phase to phase surges. Best regards John McAuley www.cei.ie <http://www.cei.ie/> [email protected] ***************************************************************** DISCLAIMER: The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. 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If you are not the intended recipient please notify us immediately by returning the e-mail to the originator ________________________________ > -----Original Message----- > From: [email protected] [mailto:[email protected] <mailto:[email protected]> > ] On Behalf Of Reginald > Henry > Sent: Thursday, May 19, 2011 8:07 AM > To: [email protected] > Subject: Need assitance in finding a manufacturer : 1:1 ISOLATION TRANFORMER > for use as Lab Equipment while performing EN 61000 testing > > My initial posting resulting in information that lead me > To a dead end , regarding securing an Isolation Transformer. > > Can anyone else supply me with a lead to a manufacturer ? > > See below... > > Thanks again, > Reg > > -----Original Message----- > From: Reginald Henry > Sent: Wednesday, May 18, 2011 3:58 PM > To: [email protected] > Subject: 1:1 ISOLATION TRANFORMER for use as Lab Equipment while > performing EN 61000 testing > > Hello All, > > Can anyone supply me with information as to where > I can purchase Isolation Transformer for use in the lab. > > While performing the some of the impulse surge testing > I need to have confident that none of the testing characteristic/impulse > surges are > Being fed back on to the 230v main. (wattage is <<10 watts ) > > I need to isolate the test equipment as well as the EUT from the mains > > Please send info off line directly to me. > > Thanking you in advance for your valuable information. > > Best Regards, > Reg Henry > > Reginald Henry > Electrical Engineer > > Compliance Engineering > Tel: (631) 952-2288 Ext: 310 > > > > > > > > > CONFIDENTIALITY NOTICE: This transmission may contain information that is > privileged, confidential and/or exempt > from disclosure under applicable law. If you are not the intended recipient, > you are > hereby notified that any > disclosure, copying, distribution, or use of the information contained herein > (including any reliance thereof)is > strictly prohibited. If you receive this transmission in error, please > immediately > contact the sender and destroy > the material in it's entirety,whether in electronic or hard copy format. 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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://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]> - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]> - ---------------------------------------------------------------- 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://product-compliance.oc.ieee.org/ Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]>
