Doug, I'm asking where in Table 18 is the 500 Vac requirement defined and is -48 Vdc considered SELV or a harzardous voltage secondary.
Thanks, Jerry On Tue, 13 Jul 1999 13:52:40 -0700 Douglas McKean <dmck...@corp.auspex.com> writes: >At 01:17 PM 7/13/99 -0700, Jerry Martin wrote: >>Thank you to all who responded. >> >>I'm still a little unclear as to where the 500 Vac voltage comes >from. >>Is it called out in UL1950 or is it an NRTL determined value? >> >>Is the -48 Vdc considered SELV or a hazardous voltage secondary? > > >You're asking where they came up with the >values in Table 18 - "Test Voltages for >Electric Strength Tests"? > >Or as long as they follow the associated >criteria for TNV circuits? > >Maybe I'm complicating the question ... > ___________________________________________________________________ Get the Internet just the way you want it. Free software, free e-mail, and free Internet access for a month! Try Juno Web: http://dl.www.juno.com/dynoget/tagj.
