N to each X is.1 ohm X to X is .2 ohm John
On 5/29/2012 9:57 AM, gene heskett wrote: > On Tuesday, May 29, 2012 10:39:54 AM John Thornton did opine: > >> This is a shot of the stepup transformer. All the taps are for the input >> side... I kinda wondered about jacking with the hot leg but didn't try >> it. X goes to the infeed unit. >> >> http://imagebin.org/214319 >> >> The nameplate just has FLA 50a and largest motor load 20a >> >> John >> > That's a bit odd, so lets check one last thing, cold, disconnect all 3 'X' > wires, then measure for continuity from N -> any X. and N -> any H, and > lets settle it as to whether this transformer actually isolates the > important winding. > >> On 5/29/2012 8:04 AM, gene heskett wrote: >>> On Tuesday, May 29, 2012 09:02:11 AM John Thornton did opine: >>>> It seems that phase perfect works together with >>>> >>>> http://www.transformeronline.com/prices/threephasetransformer.htm >>>> >>>> The have several sizes of 240 delta to 208 Y... how do you pick a >>>> size? >>>> > Humm 390 volts, assume 22 amps/phase, 390*66 is a hair over 25KVA, so 25 to > 30 KVA should cover it. > >>>> John >>> Is there a nameplate somewhere that quotes the maximum KVA of its >>> draw? Then pick the next one up. >>> >>> Those prices look pretty good from here. > > Cheers, Gene ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
