Michael, I do not believe there are any requirements for circuit diagrams as in IEC60204. UL 508A references other UL standards. See http://ulstandardsinfonet.ul.com/scopes/scopes.asp?fn=0508A.html In order to answer your question of internal voltage transformed to 6500 volts, it is important to know the use of the insdustrial control panel and the purpose of the 6500 voltage. NITW is the UL Category for Listed Industrial Control Panels, see http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/showpage.html? <http://database.ul.com/cgi-bin/XYV/tem late/LISEXT/1FRAME/showpage.html?&name= ITW.GuideInfo&ccnshorttitle=Industrial+ ontrol+Panels&objid=1074099241&cfgid=10 3741824&version=versionless&parent_id=1073990195&sequence=1> &name=NITW.GuideInfo&ccnshorttitle=Indu trial+Control+Panels&objid=1074099241&c gid=1073741824&version=versionless&parent_id=1073990195&sequence=1
Best Regards, Peter Merguerian "M. Loerzer-Mobile (GLOBALNORM)" <[email protected]> wrote: Hi UL experts, I have analyzed UL 508A and the guidelines. I have the following questions: 1. What are applicable standards for "circuit diagrams"? Does have UL specific requirements? I found only IEEE 315 referenced in NFPA 79. 2. Which UL standards are applicable if the internal voltage is transformed up to 6500 volts? 3. In http://www.ul-europe.com/download /technical/industrial/Control_Panel_Information_en.pdf on page 7: what does "NITW" mean? Mit freundlichen Grüßen Yours sincerely Dipl.-Ing. Michael Loerzer Managing Director Regulatory Affairs Specialist Fon: +49 30 3229027-50, Direct Call: -51 Mobile: +49 170 3229027 (new) Fax: +49 30 3229027-59 www.Globalnorm.de <http://www.globalnorm.de/> Globalnorm GmbH, Sitz der Gesellschaft: Alt-Moabit 94, 10559 Berlin Geschaeftsfuehrer: Dipl.-Ing. Michael Loerzer Amtsgericht Berlin-Charlottenburg HRB 105204 B, USt-ID-Nummer: DE251654448 - ---------------------------------------------------------------- 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 _____ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. <http://us.rd.yahoo.com/evt=51733/*http //mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ> Try it now. - ---------------------------------------------------------------- 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
